Gary Fisher Cronos User's Manual
Contents
1. GARY FISHER Fender Installation This section explains how to install front and rear fenders on a Cronus using the accessory dropout adapters and custom brake attachment nuts Each dropout adapter or eyelet is a special screw with an eyelet The brake attachment nut includes a bolt that threads into the nut Custom dropout eyelet w locknut set of four Eyelet 2 295468 Locknut 2 300381 Custom brake nut w inside screw set of two Nut FT 297424 Nut RR 297728 Installing the eyelets 1 With a 25mm hex remove the plugs that cover the threaded holes in the rear dropouts and fork tips Figure 12 2 Thread a locknut onto each eyelet and thread the eyelet into the dropout Figure 13 3 Align the eyelet and secure its position by tightening the locknut Attaching the bridge clips 1 Loosen and remove the interior screw from the brake nut Figure 14 2 Position the bridge clip and place the interior screw through the attachment hole Figure 15 but do not tighten Continued next page F a gt ia Figure 15 Fender bridge clip held by interior screw ER SERVICE INFORMATION 10 GARY FIS e GARY FISHER Finishing the installation 1 Attach the foot of the rear fender If the fender has a clip instead of a hole remove the clip fastener with a drill If necessary use the drill to enlarge the empty hole 2 Place a screw through the hole in the foot of the fend2. To install the bearings 1 Apply a light coat of grease to the inner race of the lower bearing 2 Install the bearing on the steerer Figure 6 The bearing is symmetrical so either side is right side up 3 Apply a liberal coat of grease to the bearing seats of the head tube both top and bottom Figure 7 4 Slide the steerer with the bearing installed through the head tube Figure 8 5 Slide the upper bearing down the steerer and into the frame P 6 Slide the centering washer onto the steerer Figure 9 Figure 6 Lower bearing on fork crown Figure 9 Slide the centering washer onto the steerer 8 GARY FISHER SERVICE INFORMATION e GARY FISHER To install the shims bearing cover and spacers Fisher installs three 1mm shims between the centering washer and the bearing cover to ensure an adequate space between the bearing cover and the top of the head tube There should be at least 0 5 millimeter space to prevent contact or interference 1 Slide the three shims onto the steerer 2 Slide the bearing cover onto the steerer Figure 10 3 Measure the gap between the head tube and the bearing cover In some cases all three shims may provide more clearance than necessary In this case remove shims until there is only one millimeter of space between the head tube and the bearing cover Figure 11 4 E Figure 10 The bearing cover and one spacer on 4 Slide the hea
3. Mrd o w 11 miens ue TOR MR T OEE E E AEE 14 Campana Unta E ers eee ne mee mes ete oe POs Oe a Os E an tee See 18 inepecing tne IG CON sigs RR RM 20 FA MGOTE NRI E 21 Cronus Crankset TroUBlSSMOOEIND cicacsr cevacsececavevasissvesceesivevndieeveetsesiencadistveuteesivoravivaviautoesivecaviniveutunienevve 24 Bearing play in a GXP crank or bottom bracket assembly nnen 24 Crank is rubbing or there is excessive drag oo cceccccceccccscsssssssccescscsssssesesesecscscsseescscssseseseescscssseseseeeeees e5 GXP triple crankset can t be properly preloaded 1T7 ees 25 3 GARY FISHER SERVICE INFORMATION e GARY FISHER Working with Carbon Fiber Parts Carbon fiber parts are different from metal parts so they require different treatment Keep carbon away from sharp edges or excessive pressure Carbon fiber composite can be damaged by sharp edges or clamping mechanisms which cause a point load or a high pressure area The clamps on some parts are not compatible with carbon some stems seat post clamps etc have sharp edges and or clamps that create pressure points Before installing any carbon fiber part or attaching any component to an existing carbon fiber part make sure the parts or components are carbon compatible As carbon frames have gotten lighter and lighter you can now feel movement in the tubes when you squeeze them This is normal and no reflection of the
4. and one hand on the seat tube and attempt to move the crank arm laterally toward and away from the seat tube 4 Spin the cranks If the crank feels or sounds loose or if the motion stops abruptly or you hear a grinding noise coming from the bearings readjust the bearings or take the bike to your Gary Fisher dealer 19 GARY FISHER SERVICE INFORMATION GARY FISHER Part description Campagnolo The Cronus uses a special bearing system that has no parts that thread into the frame Drive side parts system requires you to attach bearing supports seal seats to the bottom bracket shell of the Cronus Figure 38 This section explains how to do that Instead the bearings are a slip fit into the frame However the Campagnolo UltraTorque The seal seats might fit into the frame tightly In this case you might need to tap the En cups with a soft faced mallet However do not use a hammer or bearing press to install parts the bearings into the frame If the bearing fit is too tight make sure the seal seats are clean and free of debris Tools and materials required c81827 washer To complete the installation you will also need the Campagnolo instructions available at 281826 http www campagnolo com pdf 7225306 Ultra torque 05 07 pdf Also read the warning http www campagnolo com pdf 7225365 warning Ultra Torque 0607 pdf Crankset and bottom bracket bearings come pressed onto the axle halves Pla
5. strength of the frame However repeated compression of the sides of the tubes is not good for them and could eventually lead to frame damage Do not squeeze the frame tubing with your fingers and especially never clamp the tubing in any mechanical device including car racks Clean carbon parts before installation With the interfaces of metal parts grease is used on the clamping surfaces to prevent corrosion When making adjustments always grease the threads and shoulders of bolts Grease reduces corrosion and allows you to achieve the correct tightness without damaging tools However with most carbon parts you should avoid grease If grease is applied to a carbon part that is clamped the part may slip in the clamp even at the recommended torque specification The carbon part can be assembled in a clean dry state As an alternative we recommend the following special carbon prep products Tacx carbon assembly compound Fiber Grip carbon fiber assembly gel from Finish Line On the other hand the bearing seats of the Cronus frameset do require grease as explained in these instructions Never modify the fork frame or components The parts of the Cronus frameset have been carefully designed to meet the strength and function requirements of safe riding Modifying these parts in any way may make the bike unsafe As an example removing the redundant wheel retention tabs on fork tips could make the fork less functional Suspens
6. the crank arms rotate poorly there are several possible issues Out of spec or bent non drive metal seal The inside chamfer of the metal seal Figure 54 rubs on the outer race of the bearing The metal seal deforms under the compressive load of the non drive arm and rubs on the outer race of the bearing Bearing not seated properly A tight bore can cause the installer to think the bearing is seated when it is not Install a new metal seal same Part Number 282865 We have revised the metal seal by adding a ring of material 0 3mm thick to the seal around the inner diameter This will move the outer edge of the seal away from the bearing When properly installed the bearing will not sit even with bottom bracket shell Enduro bearing 0 5mm inside the shell GXP non drive bearing 0 25mm outside the shell Although some cranksets change the arm configuration to add clearance for a third chainring the GXP crankset uses a longer axle Without additional spacers a longer axle will not compress the bearing Different axle lengths require different spacers Triple GXP crank axles are 5mm longer than doubles Install a 5mm thick spacer Part Number 291276 between the wave washer and the red bearing seal Figure 55 Figure 54 SRAM bearing set Seal Bearing Wave washer Figure 55 SRAM bearing set Metal seal
7. GARYFISHERN d Pret TN ts gt bd o Tw M 2010 SERVICE INFORMATION e GARY FISHER Service Information The Gary Fisher Cronus is the lightest strongest frameset we have ever made To accomplish this we have used shaped and very thin walled carbon tubes Because of its unique features the Gary Fisher Cronus requires different or additional assembly techniques provided here Carbon fiber care Headset bearing installation Front hub and fork integration Bottom bracket bearing installation for a variety of bottom bracket types Check www fisherbikes com for updates These instructions are written for an experienced mechanic If you need further information refer to your bicycle owner s manual the instructions in a bicycle mechanic s handbook or consult your dealer Please save these instructions for future reference e GARY FISHER Table of Contents WORKING en Carbon FIBT Parta varen ev tabe e eu seal e ub E tube 1 Obee Hon Noor SLC ic EE 2 Me TRO OTEO O aee een ans A E AAAA OE AEAEE EEE EAAS EAS EAE bac EEEE N AAEE EAE EA 3 PS SUG SEG IIS ell HIG ICI sesers ia a E a a Raa ainda e R Aaaa 4 Special Care Information nnee 4 INSPECTING the Headset oa ccc cccccccscssssscsesssscsesesessvevssassssesesasssscsesevavasasscsesessvasassesessuesacasasseseseacscasseeeaeaees 6 Fonder dns BF 01 8 oce NERIS 7 EE S m Bi 6 S US LEN S setti MM MEME MEME MED 9 CYS Se NN St Ba NO EO 10 SU
8. Put one hand on the crank arm and one hand on the seat tube and attempt to move the crank arm laterally toward and away from the seat tube 4 Spin the cranks If the crank feels or sounds loose or if the motion stops abruptly or you hear a grinding noise coming from the bearings readjust the bearings or take the bike to your Gary Fisher dealer Figure 46 Tightening the axle bolt NFORMATION 22 GARY FISHER SERVICE EXO A L Part description BB90 bearing kit B 293227 These instructions and parts are for the aluminum FSA cranks only The current B kit j l Drive side parts will not work for FSA carbon cranks l The Cronus uses a special bearing system that has no parts that thread into the frame 294668 Instead the bearings are a slip fit into the frame Figure 47 This section explains how E to install the bearings and crankset parts The bearings might fit into the frame tightly In this case you might need to tap them Bearing 300162 with a soft faced mallet However do not use a hammer or bearing press to install the Se 294668 bearings into the frame If the bearing fit is too tight make sure the bearings are clean and free of debris Tools and materials required To complete the installation you will also need the FSA instructions available at http www road fullspoeedahead com downloadfly aspx download downloads Install MegaExoAlloy pdf Crankset a
9. a light coat of grease to the inside of the other bearing seal 2 With the grease side toward the bearing slide the bearing seal onto the axle Figure 36 3 Align the non drive crank arm with the groove on the axle and slide the crank onto the axle The non drive crank arm should point 180 degrees opposite of the drive side crank arm 4 With the plastic installation tool press the crank onto the axle Figure 37 as far as it will go 5 Release the installation tool and spin the cranks 10 to 20 revolutions 6 Follow the Shimano instructions to complete the installation 7 Follow the steps in Inspecting the bottom bracket To remove the bottom bracket bearings The Cronus bottom bracket bearing system is designed to be a slip fit However after the first installation some bearings might be tight If the bearings do not easily come out by hand you may use the following method to remove them 1 Slide the crank axle into the bearing so that the bearing is over the non drive side of the axle about 1 inch 25 mm from the non drive end E Gently rock the axle while yOU pull the axle out Figure 37 Pressing the crank arm onto the axle Inspecting the bottom bracket Every 3 months check the bottom bracket adjustment To check the bottom bracket bearing adjustment 1 Lift the chain from the chainrings 2 Rotate the crank so that one of the arms is parallel to the seat tube 3 Put one hand on the crank arm
10. aring contact area of the axle Figure 26 The grease areas should be about 1 inch 25 mm wide On the drive side start at the bearing seal On the non drive side start at the splines and apply toward the drive side of the axle 5 Insert the axle through the drive side bearing in the bottom bracket Figure 27 To install the non drive side crankarm 1 Apply a light coat of grease to the inside of the metal bearing seal 2 With the grease side toward the bearing slide the bearing seal onto the axle Figure dosi ua Sliding the wave washer and bearing cover onto e axle 28 3 Follow the TruVativ GXP installation instructions to complete to install the non drive crank arm 4 Tighten the crank bolt to 420 480 Lb In 48 54 N m 5 Follow the steps in Inspecting the bottom bracket To remove the bottom bracket bearings The Cronus bottom bracket bearing system is designed to be a slip fit However after the first installation some bearings might be tight If the bearings do not easily come out by hand you may use the following method to remove them 1 Slide the crank axle into the bearing so that the bearing is over the non drive side of the axle about 1 inch 25 mm from the non drive end 2 Gently rock the axle while you pull the axle out Inspecting the bottom bracket Every 3 months check the bottom bracket adjustment To check the bottom bracket bearing adjustment 1 Lift the chain from the chai
11. cut end of the steerer Figure 3 You can also use sand paper for this step Sandpaper is less aggressive and a bit more forgiving 8 With the sandpaper smooth the end of the steer tube and the inside corner Figure 4 This can be done with a shoeshine movement or by rotating and reciprocation with the Eure 2 mier Ehe fork over eo hat cutting Galways sandpaper toward the center this prevents loose fibers 9 Remove the fork from the saw guide 10 Inspect for frayed loose or broken fibers Repair as needed If despite your care some individual fibers break free treat the fibers with care because if one is pulled or moved it could zipper down the length or the steerer If aloose fiber area is small and short you can repair it To repair glue the fiber in place with two part epoxy Finish by lightly sanding with 220 or 400 grit sandpaper If you see loose fibers extending more than one half the length of the steerer have the fork evaluated by Fisher before repairing or installing The fork is now ready for you to complete the fork installation Figure 3 File away from the crown NOT toward it Figure 4 Smooth the inside of the steerer with fine grit sandpaper 6 GARY 9 ER SERVICE INFORMATION 7 e GARY FISHER Headset Installation The headset of the Cronus uses a 1 5 lower bearing and 19 upper bearing Figure 5 The bearings are slip fit into the fra
12. ding load on the hub axle and damage the bearings Do not put the FCC front wheel in another bike The hub flanges or the spokes of the Cronus front wheel can contact the blades of a standard fork The consequences of this type of contact should be obvious The large faces of the FCC might completely miss the dropout face on a different fork such that engaging the quick release can put a bending load on the hub axle and damage the bearings 12 GARY FISHER SERVICE INFORMATIC Figure 18 Wide stance of hub flanges and outboard placement of fork legs relative to the dropouts Figure 19 Large diameter hub end faces mater to oversized fork tips e GARY FISHER Crankset Installation Part description SRAM 404700 l Drive side parts These instructions explain how to install a SRAM TruVativ Bontrager GXP crankset Figure 20 in a new Cronus To complete the installation you will also need the SRAM ee instructions available at http www sram com _media techdocs 2005_gxp 05 r5 e pdf 3361 eari Tools and materials required 281820 Crankset and bottom bracket Non drive side parts 8mm allen wrench 282864 Bearing installation tool PN 404694 Ceramic 293618 Rock N Roll Super Coat grease Bearing Bottom bracket parts 282865 TruVativ GXP installation instructions Do not install axle shield that comes in kit 404700 2 N Wave washer Seal Bearing Bearing with lip facing in M
13. dset spacers and the stem onto the steerer d 5 Install the headset top cap and adjusting bolt For a carbon steerer do not use a star fangled nut Use the special adjusting plug 6 Adjust the headset The Cronus headset uses an angular contact bearing system so the headset will rotate freely with a wide range of tension Make sure there is no free play but do not overtighten the bearings because they might wear prematurely 7 Tighten the stem clamp bolts to the manufacturer s recommendation 8 Follow the steps in Inspecting the Headset Figure 11 Measure the distance from the head tube to the bearing cover Inspecting the Headset Once a month inspect the headset of your bicycle to see that it is not loose nor too tight If your headset bearings are loose or too tight do not ride the bicycle Readjust the bearings or take your bike to your Gary Fisher dealer for service To check is the headset is too loose 1 Stand over the top tube of your bicycle with both feet on the ground 2 Apply the front brake firmly while you rock the bicycle forward and backward 3 Look listen and feel for looseness of the headset bearings To check is the headset is too tight 1 With the front wheel off the ground slowly rotate the fork and handlebar to the right and left 2 Look listen and feel for any grinding noises or stickiness or binding at any point in the rotation 9 GARY FISHER SERVICE INFORMATION e
14. er and thread it into the frame Figure 16 Tighten to 40 60 Lb in 4 5 6 8 Nm 3 Put the wheels back onto the bike 4 Attach the fender struts to the fenders and eyelets Figure 17 5 Adjust the struts for clearance and centering around the tire 6 Tighten all the hardware the bridge clip mounting screws the strut attachments at the eyelets and the strut adjusters at the fenders Figure 17 Fender strut attached to eyelet 11 GARY S ER SERVICE NFORMATION e GARY FISHER FCC Steering System The Cronus uses the FCC Fisher Control Column with a special front hub that is mated to the front fork This mating creates a unified structure that is extra strong and extra stiff which makes the bicycle corner and handle better The result is a hub fork interface that is 25 stiffer And with a weight penalty or a few grams at most Wider hub flanges One way to increase handling precision is to use a front wheel that is stiffer laterally To make the Cronus front wheel stiffer we have increased the width of the hub flanges Figure 18 This increase in flange width spreads out the spokes increasing the bracing angle of the spokes A wider bracing angle makes the front wheel stiffer laterally with no increase in weight The wider bracing angle requires that the fork legs be slightly wider so that they do not contact the spokes The wider stance of the legs also increase lateral stiffness s
15. etal seal Figure 20 SRAM bearing set e GARY FISHER To install the bearings 1 Apply a liberal coat of grease to the contact surfaces of one bearing and the drive side of the bottom bracket shell Figure 21 2 Slide a bearing onto the installation tool Either side of the drive side bearing is the right side The non drive bearing on GXP systems has a lip Figure 22 Install the bearing so that the lip faces in 3 Press one bearing into the drive side of the bottom bracket shell Figure 23 To remove the installation tool press the release tab 4 Repeat steps 1 3 for the other bearing on the non drive side Figure 21 Greasing the bearing and the frame saddle Figure 22 Grease on the frame and the non drive side bearing with the lip facing in Figure 23 Pressing the bearing into the frame To install the drive side crankarm When handling the seals avoid bending them A bent seal will rub on the bearing creating drag 1 Apply a light coat of grease to the bearings on the face and the axle contact surface 2 Apply a light coat of grease to the metal inside of one bearing seal Figure24 Continued Figure 24 Greasing the bearing covers 14 GARY FISHER SERVICE NFORMATION e GARY FISHER 3 Install the wave washer and with the grease facing up slide the bearing seal onto the axle Figure 25 4 Apply a light coat of grease to the be
16. ing the bearings e GARY FISHER 3 Insert the Wave washer into the non drive side seal seat Figure 44 4 Slide the non drive side axle through the seal seat and bottom bracket shell Figure 45 To install the drive side bearings The drive side bearings are attached to the crankarm 1 Insert a washer into the drive side seal seat 2 Apply a liberal coat of grease to the contact surfaces of the bearing Figure 42 and the drive side seal seat Figure 43 3 Slide the drive side axle through the seal seat and bottom bracket shell 4 Line up the splines of the bottom bracket axle and press the axle together If necessary tap the ends together with the heel of your palms 5 Insert the crank bolt from the drive side Figure 46 and tighten to 380 Lb In 43 Nem 6 Follow the steps in Inspecting the bottom bracket To remove the bottom bracket bearings With the Campagnolo system each of the two bearings are pressed onto one of the halves of the bottom bracket axle To remove the bearings follow the Campagnolo service instructions Figure 44 Inserting the Wave washer after the washer on the non drive side Inspecting the bottom bracket Every 3 months check the bottom bracket adjustment To check the bottom bracket bearing adjustment 1 Lift the chain from the chainrings 2 Rotate the crank so that one of the arms is parallel to the seat tube Figure 45 Inserting the non drive side axle 3
17. ion forks can add stress to a bike frame Never add a suspension fork to a road bike or change style and or length of forks If you are unsure if a fork is compatible with a frame call Gary Fisher customer service Any modification of a frame fork or components means that the bike no longer meets our specifications and will therefore void the bike s warranty e GARY FISHER Cutting a carbon fiber steerer These instructions explain the best practices for cutting a carbon fiber steerer tube About cutting carbon fiber High quality carbon fiber composite behaves like a solid if the layers of carbon are correctly bonded together there will be no layers or loose fibers apparent Your job when cutting the steerer is to avoid damage to the steerer that might separate layers or leave loose fibers Done correctly there is no need to dress the steerer with tape before cutting or to dress it with epoxy after cutting Measure twice cut once Before cutting the steerer make sure the steerer length is correct Remember these requirements Place at least two spacers under the stem two 5mm spacers are acceptable Do not stack more than 40mm of spacers Use a stem with circumferential clamps never use a wedge type stem Use the correct tools in the correct manner Do not scratch or score the steerer below the cut line any damage to the tube surface scratches cracks or torn or loose fibers can compromise the strength of the
18. me There are many benefits to this design and one is that the Cronus headset is a tool less installation The bearings are slip fit so a headset press or fork race setting tool are not needed The fork on the Cronus frame has several unique features that require special care to avoid frame damage With a carbon steerer do not use a star fangled nut use only the compression nut assembly supplied with the fork Do not cut or machine the fork crown or head tube never use facing tools Do not use a hammer to install the bearings Make sure the stem clamp is designed correctly and is free of burrs If you choose to cut the steerer follow all normal procedures and cautions regarding carbon fiber composite parts If you are not familiar with these procedures consult your dealer Tools and materials required Top cap assembly For carbon steerer Compression nut assembly PN 408118 Stem Optional headset spacers maximum of 40 mm including bearing cover Figure 18 Bearing cover conical Aluminum 5 mm PN 404691 15 mm PN 404689 Carbon 5mm PN 404690 15 mm PN 404687 Shims imm Centering washer Upper bearing 1 Steel PN 271111 Stainless steel PN 271112 Lower bearing 1 5 PN 290413 Fork Rock N Roll Super Coat grease 4 and 5 mm allen wrenches Torque wrench Centering washer Upper bearing Lower bearing Figure 5 Cronus headset parts and spacers e GARY FISHER
19. nd bearings bearing shields come pressed onto the bearings 5 mm Allen Wrench Rock N Roll Super Coat grease Bottom bracket parts i Bearing with shield pressed on m Bearing with shield pressed on s Ne Figure 47 FSA bearing set e GARY FISHER To install the bearings 1 Apply a liberal coat of grease to the contact surfaces of one bearing and the drive side of the bottom bracket shell Figure 48 2 With the plastic bearing shield facing out press one bearing into the drive side of the bottom bracket shell Figure 49 3 Repeat Steps 1 2 for the other bearing on the non drive side To install the drive side crankarm 1 Apply a light coat of grease to the axle surface where the bearings will be in contact Figure 50 The grease areas should be about 1 inch 25 mm wide On the drive side start at the bearing seal On the non drive side start at the splines and apply toward the drive side of the axle 2 Insert the axle through the drive side bearing in the bottom bracket Figure 51 Figure 49 Pressing the bearing into the frame with the shield on the outside x TE En Figure 51 Sliding the axle through the bearings 24 GARY S ER SERVICE INFORMATION e GARY FISHER To install the non drive side crankarm 1 Align the non drive crank arm with the groove on the axle and slide the crank onto the axle 4 Mm The non drive crank arm should poin
20. nrings 2 Rotate the crank so that one of the arms is parallel to the seat tube 3 Put one hand on the crank arm and one hand on the seat tube and attempt to move the crank arm laterally toward and away from the seat tube 4 Spin the cranks If the crank feels or sounds loose or if the motion stops abruptly or you hear a grinding noise coming from the bearings readjust the bearings or take the bike to your Gary Fisher dealer Figure 28 Metal bearing cover in place over the bearing 15 GARY FIS ER SERVICE INFORMATION e GARY FISHER Shimano HollowTech Part description Shimano These instructions explain how to install a Shimano HollowTech Figure 29 in a new 411813 Cronus To complete the installation you will also need the Shimano instructions available Drive side parts at http techdocs shimano com media techdocs content cycle S Dura Ace FC 7800 803 SlI 1F30H En vl m565775698306051411 pdf Ceramic 295213 bearing Tools and materials required Crankset and bottom bracket Shimano FC16 crank arm installation tool Non drive side parts 5mm Allen Wrench 281824 Bearing installation tool PN 404694 Ceramic egoria bearing Rock N Roll Super Coat grease Bottom bracket parts Bearing Bearing Figure 29 Shimano bearing set 16 GARY FISHER SERVICE INFORMATION e GARY FISHER To install the bearings 1 Apply a liberal coat of grease to the con
21. o that part is a win win There is a downside however In a race you might need a spare front wheel This is not a problem because the Cronus uses a standard 100mm OLD Over Locknut Dimension hub Any wheel in the follow vehicle will work fine But your Cronus wheel will not work in a different bike because the hub flanges or the spokes can contact the blades of a standard fork The consequences of this type of contact should be obvious Large diameter end caps on hub Another way to increase steering precision is to reduce fork leg twist that occurs as the fork is loaded laterally and torsionally like what occurs when the bike is cornering on anything less than a perfectly smooth surface On most wheels the biggest source of this twist is the movement between the fork tips and the hub even with the quick release correctly tightened The easiest way to reduce this motion is to increase the contact area between the hub end faces and the fork tips That is exactly what we did with the Cronus Figure 19 The larger end faces create a block for the fork tips to rest against We also gave the fork custom over sized faces to mate with this special hub Again there is a downside You can still use a wheel from the race vehicle but your Cronus wheel can not be used with a different fork The large faces of the FCC might completely miss the dropout face on a different fork such that engaging the quick release can put a ben
22. on describes problems that occasionally occur and possible solutions If these solutions do not solve a problem contact Customer Service The crank feels loose when grasped at the pedal end and rocked side to side Wave washer not compressed fully This is usually caused by insufficient torque on the non drive crank arm In rare instances a tolerance stack can be created by the five critical parts non drive bearing drive bearing drive side seal bottom bracket shell and axle length Spline of GXP crankarm is undersized We have seen some variation in the tolerance of GXP crankarms If the installation torque is not sufficient the crank arm will not completely compress the shield and bearing race 26 First verify that the crank has been tightened to 420 480 Lb In 50 57 Nm Most issues with play in GXP crankarms are resolved when the arms are properly tightened If this does not solve the issue add a 0 5mm washer spacer PN 294162 between the wave washer and seal Figure 53 to increase the bearing preload Remove the crankarm and re install with plenty of grease Verify that the crank has been tightened to 420 480 Lb In 50 57 Nm Re check the bearings after installation The GXP axle spline is tapered so it requires that the crank be completely tightened to seat on the axle Spacer Pd i Wave washer Bearing Figure 53 SRAM bearing set 27 GARY FISHER If you notice that
23. steerer Allow the saw to do the work instead of cutting cleanly excessive pressure tends to pull on or tear the carbon Always cut toward the center of the steerer which helps prevent splintering of the carbon This requires turning the steerer in the saw guide Keep the cut aligned correctly so that the finished cut is even and perpendicular to the centerline of the steerer Avoid inhaling the carbon fiber dust that occurs during the cutting process Materials and tools needed Bench vise Saw guide to create a perpendicular cut e g Park Tool Threadless Saw Guide SG 6 Fine grit sandpaper 220 400 grit Hacksaw with Carbide Grit hacksaw blade E File smooth tooth or mill bastard e GARY FISHER To cut the steerer 1 Clamp the saw guide securely in the bench vise 2 Clamp the steerer in the saw guide Be careful not to crush the steerer do not overtighten 3 Using only light pressure on the saw blade cut about halfway through the steerer Figure 1 Be careful not to create loose fibers on the inside or the outside the steerer 4 While keeping the cut aligned with the cutting guide rotate the fork 180 degrees in the guide Figure 2 Figure 1 Use light pressure when cutting 5 Finish cutting the steerer 6 Loosen the saw guide slightly and push the steerer through until the end can be dressed Retighten 7 Working away from the crown file the outside corner off the
24. stic crank arm installation tool LocTite9 638 retaining compound TCG 408082 LocTite9 primer 7649 TCG 408083 5 mm Allen Wrench Hock N Roll Super Coat grease Bottom bracket parts Wave washer d Bearing Washer Seal seat Washer Bearing Figure 38 Campagnolo bearing set 20 e GARY FISHER To install the seal seats 1 Clean all surfaces to be bonded bottom bracket shell seal seats with alcohol wipes or similar Figure 39 2 Apply a thin film of LocTite Primer to the outer step of the bearings cups and the outer shoulder of the bottom bracket shell Figure 40 Allow the primer to evaporate completely 3 Apply LocTite 638 to the faced of the seal seat that contacts the bottom bracket shell 4 Press the seal seat into the frame Figure 41 If needed tap lightly with a soft faced mallet Let the LocTite cure for at least 24 hours before inserting the bearings To install the non drive side bearings The non drive side bearings are part of the crankarm 1 Insert a washer into the non drive side seal seat 2 Apply a liberal coat of grease to the contact surfaces of the bearing Figure 42 and the non drive side seal seat Figure 43 Continued 21 GARY FISHER SERVIC NFORMATION Figure 40 Applying LocTite primer to the outer step of the bearing cups Figure 41 Inserting the bearing cups into the bottom bracket shell Figure 42 Greas
25. t 180 degrees opposite of the drive side crank arm 2 Install the FSA crank bolt and tighten to their torque specifications Figure 52 3 Follow the FSA instructions to complete the installation 4 Follow the steps in Inspecting the bottom bracket To remove the bottom bracket bearings The Cronus bottom bracket bearing system is designed to be a slip fit However after the first installation some bearings might be tight If the bearings do not easily come out by hand you may use the following method to remove them 1 Slide the crank axle into the bearing so that the bearing is over the non drive side of the axle about 1 inch 25 mm from the non drive end 2 Gently rock the axle while you pull the axle out Inspecting the bottom bracket Every 3 months check the bottom bracket adjustment To check the bottom bracket bearing adjustment 1 Lift the chain from the chainrings 2 Rotate the crank so that one of the arms is parallel to the seat tube 3 Put one hand on the crank arm and one hand on the seat tube and attempt to move the crank arm laterally toward and away from the seat tube 4 Spin the cranks If the crank feels or sounds loose or if the motion stops abruptly or you hear a grinding noise coming from the bearings readjust the bearings or take the bike to your Gary Fisher dealer Figure 52 Pressing the crank arm onto the axle e GARY FISHER Cronus Crankset Troubleshooting This secti
26. tact surfaces of one bearing and the drive side of the bottom bracket shell Figure 30 2 Slide a bearing onto the installation tool Either side of the bearing is the right side 3 Press one bearing into the drive side of the bottom bracket shell Figure 31 To remove the installation tool press the release tab 4 Repeat steps 1 3 for the other bearing on the non drive side Figure 31 Pressing the bearing into the frame 17 GARY FISHER SERVICE INFORMATION e GARY FISHER To install the drive side crankarm When handling the seals avoid bending them A bent seal will rub on the bearing creating drag 1 Apply a light coat of grease to the bearings on the face and the axle contact surface 2 Apply a light coat of grease to the metal inside of one bearing seal Figure 32 3 With the grease facing up slide the bearing seal onto the axle Figure 33 4 Apply a light coat of grease to the bearing contact area of the axle Figure 34 The grease areas should be about 1 inch 25 mm wide On the drive side start at the bearing seal On the non drive side start at the splines and apply toward the drive side of the axle 5 Insert the axle through the drive side bearing in the bottom bracket Figure 35 Figure 35 Sliding the axle through the bearings 18 GARY FISHER SERVICE INFORMATION e GARY FISHER To install the non drive side crankarm 1 Apply
Download Pdf Manuals
Related Search