FRAME, SPRINGS AND SHOCK ABSORBERS
Contents
1. 220 FRAME SPRINGS AND SHOCK ABSORBERS CHRYSLER SERVICE MANUAL Section IX FRAME SPRINGS AND SHOCK ABSORBERS CONTENTS Page Frame Alignment erena es enun ae Gade E Ok hI CAE RS 223 Spring Maintenance lt lt 65 465 bees Boe eee eww eee hws 224 Rear Spring Interliners lt sce sat ak bs bo eed ok eee i EL SS ee 225 Removal and Installation of Front Shock Absorbers 228 Removal and Installation of Rear Shock Absorbers 228 DATA AND SPECIFICATIONS FRAME Models C 72 C 73 C 70 TYPE Welded Double Channel Box Section Side Rails DIMENSIONS See Figures 1 2 3 and 4 REAR SPRINGS TYPE Semi Elliptic NO OF LEAVES SEDANS 5 TOWN amp COUNTRY WAGON 7 J oa WIDTH 2 5 2 5 LENGTH 55 55 55 55 SHACKLE Silent Block Rubber Bushings E HANGER Side Strapped with Rubber Bushed Bolts E SIX LEAF SPRINGS USED ON ALL CARS EQUIPPED WITH AIR CONDITIONING UNITS OR POWER PACKAGE a e CHRYSLER SERVICE MANUAL FRAME SPRINGS AND SHOCK ABSORBERS 221 SHOCK ABSORBERS Models C 71 C 72 C 73 C 70 TYPE Oriflow Double Acting Hydraulic TORQUE SPECIFICATIONS Foot Pounds REAR SPRING SILENT BLOCK NUT 60 o UPPER 60 SHOCK ABSORBER STUD NUT LOWER 70 REAR SPRING U CLIP BOLT NUTS 70 REAR SPRING SHACKLE NUTS 7 50 SWAY BAR BRACKET TO FRAME BOLTS 55 SWAY BAR SHAFT RETAINER TO CONTROL ARM BOLT N2. NGS AND SHOCK ABSORBERS CHRYSLER SERVICE MANUAL BE REPLACED IF THEY HAVE LOST THEIR RESISTANCE IN ONE OR BOTH DIRECTIONS OR IF THEY DRIP OIL EVIDENCE OF OIL MOISTURE IS NOT CAUSE TO REPLACE THEM AS SEAL MUST WEEP TO PREVENT SCORING 8 REMOVAL AND INSTALLATION OF FRONT SHOCK ABSORBER a Removal Refer to Figure 12 and proceed as follows Raise hood and remove dirt or grease from around shock absorber upper mounting area Remove piston rod nut and cup washer Re move two lower mounting bolts then withdraw shock absorber through opening in bottom of spring seat The lower cup washer may remain in place or drop through when shock absorber is removed Using a suitable drift force inner steel sleeve out of bushing then remove bush ing from frame opening Check bushing for deterioration or fatigue Install new bushing if necessary Before installing new bushing dip bushing in soapy water insert in position in frame using a twisting motion When properly in stalled groove in bushing will index with frame Force steel sleeve through opening in bushing and down into position Remove mounting bracket from shock absorber eye using Tool C 3413 Press mounting bracket and bushing _ out of eye The mounting bracket and bushing are serviced as an assembly only b Installation To install a new mounting bracket and bushing refer to Figure 12 and proceed as follows Position the new mounting bracket so the mounting holes are a
3. SPRINGS AND SHOCK ABSORBERS CHRYSLER SERVICE MANUAL Fig 7 Separating Spring Leaf slight gap between leaves with a screwdriver until a tapered bar can be hammered in place between screwdriver and interliner as shown in Figure 7 Keep tapered bar in place Clean the lower grooved surface of the longer spring leaf as far as interliner makes contact Use sandpaper wrapped around a flat file and scrub vigorously to remove any dirt or rust spots to obtain smooth metallic surfaces to left and right of groove Wipe off excess par ticles including dirt in groove itself with a clean cloth In order to reach between leaves open gap by bearing down on end of tapered bar b Installation of Interliner Slip new interliner in place by opening gap between the spring leaves again with tapered Fig 8 Positioning New Interliners Fig 11 Tightening Aligning Clip CHRYSLER SERVICE MANUAL FRAME SPRINGS AND SHOCK ABSORBERS 227 bar and moving interliner until prongs of metal fasteners are aligned with holes in the shorter leaf as shown in Figure 8 With tapered bar still in place pry prong end of each metal fastener through hole in spring leaf as shown in Figure 9 Remove tapered bar which has remained be tween leaves during these operations The bar may be withdrawn while a screwdriver is placed alongside Then the screwdriver may be pulled out reversing operation which was used to in sert bar in position A f
4. UT 55 ESSENTIAL TOOLS C 3413 Remover and Installer Shock Absorber Lower Mounting Assembly a 5 3034 42 2 57342 A1 2542 28 42 52 562142 oe i E ei li ts w 27 Yos NOTE 26 i Nee 52 4 DIMENSIONS ARE SHOWN AS INCHES AND ARE PLUS OR MINUS 6 UNLESS OTHERWISE NOTED TOP OF FRAME LINE TOP OF FRAME LINE 1754 th GAUGE HOLE IN EACH SIDE OF FRAME y i Aeth C Aa a is 7 oa a on p EE A NT 196614 55x37 B Fig 1 Frame Dimensions Windsor and New Yorker 222 FRAME SPRINGS AND SHOCK ABSORBERS CHRYSLER SERVICE MANUAL Section IX FRAME SPRINGS AND SHOCK ABSORBERS FRAME A full length box section frame with rede signed crossmembers and longer side rails are used on 1956 Chrysler Models The convertible coupe frames have X mem bers as formerly to reduce body shake and im prove frame to body attachment A rear axle control strut and center bearing propeller shaft has been incorporated in frame and rear axle housing design of C 73 Model for the purpose of controlling rise of nose of rear axle carrier under varying load conditions See Paragraph 8 Universal Joints Section XII for adjust ment procedures 1 CHECKING FRAME ALIGNMENT In case of collision frame members can often be satisfactorily straightened to required di TOP OF FRAME LINE 75 4 t e A a A 0 a N mensional limits It is possible that ordinary straightening methods will suffice for minor damage I
5. aster method for with drawing bar is to insert end of a bar with a short tapered hook alongside the tapered bar After tapered bar has been withdrawn the bar with hook can be slipped out easily using lever age motion inward on the far end of hooked bar Position wrap around alignment clip and tighten retainer nut as shown in Figures 10 and 11 Peen end of bolt over nut so it will not loosen SHOCK ABSORBER Chrysler cars are equipped with double act ing Oriflow shock absorbers Oriflow shock ab sorbers provide a smoother steadier ride with greater comfort and stability which is particu larly noticeable at high speeds or on rolling or rough roads In the Oriflow shock absorber resistance is built up slowly at beginning of stroke so as not to jolt passengers This resist ance is increased to a maximum at mid stroke and is tapered off to zero at end of movement The major part of dampening is accomplished at high velocity mid operation of stroke where no jolt can originate There can be little jolt at beginning and at end of stroke because both velocities of movement and resistance offered by the shock absorber are low at those points This simply means that the piston encounters minimum resistance at beginning of stroke and is gradually slowed down by increased resist ance due to fluid velocity through the orifices In turn slow movement of piston causes fluid velocity to decrease and offer minimum re sistance at terminat
6. check this measure vertical distance from top of rear spring main leaf to underside of frame side rail on both sides of car If these distances dif fer by more than 3 4 inch this is an indication that one of rear springs should be replaced This condition could be due to a bent frame kick up or an incorrectly welded spring saddle CAUTION Care should be taken when replacing rear spring on Imperial Models to see that the rear axle housing to strut shims are reinstalled in same position so as to maintain correct propeller shaft to axle pinion shaft angle 5 REPLACEMENT OF REAR SPRING INTERLINERS The 1956 Chrysler rear springs are similar to those previously used with exception of rear spring interliners To replace interliners pro ceed as follows a Removal Unload rear springs by jacking up the rear end of frame until rear shock absorbers are fully extended Remove alignment clips from springs If any of removed parts nut bolt spacer clip are damaged use corresponding replacement parts Examine spring interliners If any are miss ing or if any have lost their metal fasteners they must be replaced For replacement of these interliners proceed as outlined below Pry out metal fastener directly beneath spring leaf surface and slip out old interliner after separating the spring leaf to which inter liner was fastened from the next longer spring leaf To effect this separation pry open the 226 FRAME
7. ded to frame in manufacturing Due to Box construction of frame rivets cannots be used to attach a new body bracket to frame Cut damaged bracket off frame file surface smooth Clamp new bracket in correct position and weld securely to frame member The shielded arc weld method is recommended for frame welding or replacement of body frame support brackets The heat generated from welding operation is localized and burn ing of material is held to a minimum when a mild steel welding rod is used Install body bolt and washers insulator and nut Tighten to 18 foot pounds torque On Con vertibles install a solid spacer bolt and nut and tighten securely SPRINGS The rear springs used on Chrysler cars are of the semi elliptical design The front ends of rear springs are mounted to removable hangers which are bolted to brackets welded to outer surface of frame side rails See Fig 5 The spring front pivot bolts are cushioned in rubber which tends to help reduce noise and allows increased riding comfort through a re duction in torque and brake reaction shock No lubrication is required at this point The rear ends of springs are attached to frame through medium of flat plate shackles rubber shackle bushings shackle bolts and nuts See Fig 6 Thus suspension of rear springs in rubber tends to reduce road noise to a minimum No lubrication is required at the rear shackles The width of spring leaves a
8. ion of stroke 6 TESTING ORIFLOW SHOCK ABSORBERS Oriflow shock absorbers are designed to operate with low resistance when operated slowly and with high resistance when operated rapidly Since they operate with little resistance when compressed by hand or by bench test methods their true operating efficiency can be determined best by a road test It is impossible to determine operating efficiency of Oriflow shock absorbers by rocking the car by the bumper When road testing drive car over a fairly rough road to test resistance under fast shock absorber piston speed Then drive over a fairly smooth road to test resistance during slower shock absorber piston speeds Hand testing Oriflow shock absorbers will only reveal complete failure The amount of ride control evident from a hand test on bench is small compared with control exerted under actual riding conditions For this reason it is impossible to feel any sudden resistance in an Oriflow shock absorber no matter how fast it is operated by hand 7 SERVICING THE ORIFLOW SHOCK ABSORBER The Oriflow shock absorber cannot be refilled or disassembled Where servicing is required the shock must be removed and a new unit in stalled SHOCK ABSORBERS SHOULD ONLY UPPER J OON MOUNTING A Ad f PPA WASHER BUSHING SPACER LOWER MOUNTING ASSEMBLY SCREW LOWER MOUNTING LOCK WASHER S5P1014 Fig 12 Front Shock Absorber Installed 228 FRAME SPRI
9. n case of serious damage or fracture however the entire front suspension crossmem ber brace and support must be replaced Be fore member is replaced it is essential that frame alignment be checked and corrected if necessary Whenever possible parts should be securely fastened with hot rivets In cases where no riveting equipment is available fin ished bolts snugly fitted in reamed holes may be used The nuts should be securely tightened and non spreading lockwashers used Cold riv ets are not recommended unless adequate power press equipment is available to do a secure riv eting job When welding frame members care must be taken to localize the heat so that the steel hard DIMENSIONS ARE SHOWN AS INCHES AND ARE PLUS OR MINUS M6 UNLESS OTHERWISE NOTED TOP OF FRAME LINE a P N Aet LN GAUGE HOLE IN EACH SIDE OF FRAME 55x38B Fig 2 Frame Dimensions Custom Imperial CHRYSLER SERVICE MANUAL FRAME SPRINGS AND SHOCK ABSORBERS 223 PA 5816 I 47 56 41 5534 Iy sA i GAUGE i 7 Ke 30 2 15SKHo gt 26 TOP OF FRAME LINE 75 4 tM SIDE OF FRAME GAUGE HOLE IN EACH LO NOTE DIMENSIONS ARE SHOWN AS INCHES AND ARE PLUS OR MINUS Me UNLESS OTHERWISE NOTED TOP OF FRAME LINE y 1 lags 4 Yo th ZA 13 4 217 55x39B Fig 3 Frame Dimensions Crown Imperial ness of frame will be retained Reinforcement welds should run lengthwise along side of re inforcement Figu
10. re 214 inches refer to Data and Specifications Thus with outboard mounted rear springs rear end roll is greatly reduced and car stability on curves or sharp turns is maintained NOTE Cars equipped with air conditioning units are equipped with a heavier rear spring Should it become necessary to install new springs or silent blocks it will be necessary to remove four bolts nuts and lockwashers that hold spring hanger to frame bracket The pivot bolts cannot be removed unless this is done 4 SPRING MAINTENANCE It is important that spring U bolts be in spected at regular intervals and kept tight to prevent spring breakage Tighten spring U bolt nuts to 70 foot pounds torque The spring shackles should be inspected occasionally to make sure they are tight but not binding Tighten to 50 foot pounds torque No lubrica tion of any kind must be used on rubber bush ings Fig 5 Rear Spring Front Mounting CHRYSLER SERVICE MANUAL FRAME SPRINGS AND SHOCK ABSORBERS 225 NUT S05 Seen PSD PLATE mage 14 T WASHER RETAINER BUSHING WASHER NUTS SILENT BLOCK NUT BOU z9 aly NE Ga NUT WASHER S a BUSHING SPRING a BOLT PLATE 7 p r WASHER a SHACKLE S4x54AA Fig 6 Typical Rear Spring Suspension Exploded View Front spring heights may be affected if rear spring height varies more than 34 inch on one side as compared with other side To
11. res 1 2 3 and 4 show various dimensions to be used as a guide for checking frame align ment These dimensions are the true distance between two points as measured with a steel tape Figure 4 shows a few of various measure ments that may be taken to check squareness of frame Diagonal measure will quickly deter mine which section of frame is bent and where force should be applied to restore correct align ment 2 FRAME ALIGNMENT To properly check a frame for alignment di agonal measurement should be performed with great care When body is removed the frame may be easily checked for alignment by meas uring diagonals as shown in Figure 4 with trammels or steel tape and check dimensions given in Figure 1 2 and 3 Measurements may 55 x 40 Fig 4 Typical Frame Diagonal Measurements 224 FRAME SPRINGS AND SHOCK ABSORBERS CHRYSLER SERVICE MANUAL be taken without removing body from chassis by using a plumb bob and chalk line on level floor Attach line of plumb bob to center of one of rear body bolts The plumb bob should be sus pended slightly above floor When plumb bob comes to rest mark floor directly underneath it The marks made on floor will represent var ious points of frame to be checked diagonally Move car away so the distance can be measured to compare with the diagonal measurements shown in Figures 1 2 3 and 4 3 REPLACING BODY SUPPORT BRACKETS The body support brackets are wel
12. t a right angle to shock absorber Using Tool C 3413 press mounting bracket into eye until centered CAUTION Always press against steel sleeve to avoid dam age to assembly Fig 13 Rear Shock Absorber Installed Extend shock absorber piston rod to its full travel and slide lower cup washer concave side up over rod and down into position Slide shock absorber up through opening in spring seat be sure the extended piston rod enters steel sleeve through upper bushing and up into position Install retaining bracket bolts and tighten 35 foot pounds torque Slide piston rod upper cup washer concave side down over piston rod and down on bush ing Install nut and tighten 35 foot pounds torque or until upper and lower concave wash ers bottom against steel sleeve 9 REMOVAL AND INSTALLATION OF REAR SHOCK ABSORBERS Fig 13 To remove rear shock absorber remove nuts from shock absorber mounting stud pins which pass through eyes at top and bottom of shock absorber and remove shock absorber When installing a shock absorber first install the bushings in the shock absorber s eye In stall inner bushing retainers shock absorber and bushing assembly and outer retainers and nut The concave face of each retainer must fit against convex face of adjacent bushing Tight en to specified torque
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