Eskridge Series 78 Service Manual
Contents
1. series 78 Planetary Auger Drive y Service amp Repair Manual EFFECTIVE FOR FROM S N 00001 UP DATE 04 24 86 UP h W SM78 gt 61599 SERIES 78 SERVICE MANUAL HYDRASYNC PLANETARY AUGER DRIVE This manual will assist in disassembly and assembly of major components for all Series 78 Planetary Auger Drives Item numbers indicated in parentheses throughout this manual refer to the Eskridge Series 78 exploded parts breakdown drawings Individual customer specifications bail assembly output shaft hydraulic motor etc may vary from exploded drawing and standard part numbers shown If applicable refer to individual customer drawing for details LUBRICATION AND MAINTENANCE The oil should be changed after the first 50 hrs of use and at 500 hr intervals thereafter Geardrives in auger drives require GL 5 grade EP 80 90 gear oil for lubrication The manufacturer recommends that the unit be partially disassembled to inspect gears and bearings at 1000 hour intervals OIL CAPACITY 6 5 pints Proper oil level will measure to middle of primary planet gears when auger drive is in vertical position WARNING While working on this equipment wear adequate protective clothing hearing eye and respiratory protection Use safe lifting procedureg UNIT DISASSEMBLY Refer to exploded view drawing on page 7 1 Scribe a diagonal line from the bail 35 to the bearing carrier 42. the secondary carrier should be inspected for possible wear around the spline where it contacts the shaft retaining ring Under heavy use and or in rocky regions continual impacting of the retaining ring against the carrier may cause wear in this area If it wears to a beveled shape high loading in the pullout direction could cause the shaft retaining ring to dislodge from its groove allowing the hex shaft to pull out of the unit lf when inspected the carrier is found to be worn to a bevel shape the carrier should be replaced with carrier part number 1 004 0073 Units with serial numbers prior to 4900 should also have the hex output shaft replaced with the current production revision part number 1 004 0513 FLAT WITH SQUARE CORNERS CARRIER IS GOOD KAN GASES WS N AND D 0 WORN WITH BEVELED AND ROUNDED CORNERS REPLACE CARRIER OTHER ESKRIDGE PRODUCTS SERIES 20 28 SERIES PLANETARY GEARDRIVES TORQUE RATING MAX INTERMITTENT 20 000 28 000 IN LB 50 SERIES 50 000 IN LB 60 SERIES 60 000 IN LB 100 SERIES 100 000 IN LB 130 SERIES 130 000 IN LB 150 SERIES 150 000 IN LB 250 SERIES 250 000 IN LB 600 SERIES 600 000 IN LB 1000 SERIES 1 000 000 IN LB MULTIPLE DISC BRAKES SERIES TORQUE RATING 90B SAE B TO 4 800 IN LB 90BA SAE B ADJUSTABLE TORQUE 92B SAE B LOW PROFILE 93 FOR NICHOLS MOTORS TO 4 800 IN LB TO 2 800 IN LB TO 6 100 IN LB 95C SAE C TO 12 000 IN LB 95W SAE C W
3. washers and planet gear 2 Planet shafts 10 should be installed with chamfered end of 1 8 inch hole toward outside diameter of the carrier 7 This will aid in alignment of holes while inserting roll pins 23 3 Drive three roll pins 23 through the carrier holes and into the planet shafts to retain the parts SECONDARY PLANET CARRIER SUBASSEMBLY ITEMS 8 11 13 15 17 18 23 amp 26 DISASSEMBLY AND REPAIR 2 o amp E S e Ds ED J 18 t nm TT Q J As with the primary planet carrier check for abnormal noise in the planet gears bearings 18 by rotating the planets and listen and feel for any noise or roughness If further inspection or replacement is required follow the same procedure as steps 1 6 of the primary planet carrier assembly Substitute items as indicated planet gears 15 planet bearings 18 planet shafts 11 washers 13 carrier 8 The inner bearing cone 17 cannot be removed from the carrier 8 without destroying the bearing If this needs replacement please consult the factory Proceed with steps 1 through 3 of the primary planet carrier re assembly NOTE 1 Retaining ring 26 must be inserted into carrier 8 before it is installed in unit as described in step number 2 of UNIT ASSEMBLY NOTE 2 See page 8 service bulletin concerning the wear of secondary planet carriers 8 BASE SUBASSEMBLY ITEMS 2 3 4 20 27 28 amp 36 DISASSEMBLY AND RE
4. 18 amp 23 Use a puller if necessary 11 Remove secondary ring gear 5 and o ring 30 12 The unit is now disassembled into groups of parts The area s requiring repair should be identified by thorough inspection of the parts after they have been cleaned and dried Then refer to the appropriate group repair section below 1 Primary Planet Carrier subassembly 2 Secondary Planet Carrier subassembly 3 Base subassembly PRIMARY PLANET CARRIER SUBASSEMBLY ITEMS 7 10 12 14 19 amp 23 DISASSEMBLY AND REPAIR Rotate planet gears 14 to check for abnormal noise or roughness in bearings 19 or planet shafts 10 If further inspection or replacement is required proceed as follows 1 Drive roll pins 23 completely into planet shafts 10 2 Press or drive planet shafts 10 out of carrier 7 3 Remove planet gears 14 and planet washers 12 from the carrier 7 4 If the planet bearings 19 require replacement press them out of the planet gears 14 and replace with new ones 5 Check primary planet shafts 10 for any abnormal wear especially ones where bearings needed to be re placed If any abnormal wear is found replace planet shafts 6 Remove the roll pins 23 from the planet shafts 10 RE ASSEMBLY 1 With planet washers 12 on both sides of the planet gear 14 and with bearings 19 installed slide gear into the carrier 7 Insert the planet shaft 10 through the carrier
5. HEEL MOUNT TO 21 000 IN LB 98D SAE D TO 25 000 IN LB PLANETARY AUGER DRIVES DIGGERS SERIES TORQUE RATING D50 MODELS 1500 2500 amp 5000 1 500 5 000 FT LB 76 MODELS BA amp BC TWO SPEED 8 000 12 500 FT LB 7 MODELS BA BC amp BD 6 000 12 500 FI LB 78 MODELS 35 amp 48 TWO SPEED 9 000 12 500 FI LB 75 MODELS TWO SPEED 12 ESKRIDGE 1900 Kansas City Road Olathe Kansas 66061 phone 913 782 1238 fax 913 782 4206 16 500 20 000 FI LB Your nearest Eskridge Distributor is WEBSITE www eskridgeinc com E MAIL sales eskridgeinc com
6. PAIR CAUTION Output shaft is no longer retained Care should be taken not to injure feet because output shaft can fall out Care should also be taken not to damage output shaft when shaft is pressed through base 1 Output shaft removal Bearing carrier 4 should be set pinion side down as shown on a plate or table with output shaft 2 protruding through a hole in table Press output shaft out bottom of base by applying a load to top end internal end of shaft until it passes through inner shaft bearing cone 17 NOTE If reusing old bearing cone do not damage roller cage by pulling on it 2 If outer bearing cone 27 needs to be removed a gear puller may be used 3 Remove the shaft seal 36 for inspection or replace ment Lubricate inner lip of new shaft seal 36 and slide the seal onto the shaft 2 until it fits snugly over shaft seal diameter with the open side toward the inside of the auger drive 4 Inspect inner and outer bearing cups 20 amp 3 and replace if necessary BASE ASSEMBLY NOTE Press bearing cone onto output shaft by pressing on inner race only DO NOT press on roller cage or it may damage bearing 1 If outer bearing cone 27 was removed for replace ment press a new bearing cone large end down as shown onto the shaft until it seats against the shoulder 2 Clean all foreign material from magnetic oil plug 28 Add a small amount of pipe thread compound to pipe plug before installing b
7. ack into bearing carrier 4 3 Place the bearing carrier 4 output side up opposite shown on the press table 4 Apply a layer of lithium or general purpose bearing grease to surface of outer bearing cup 3 Insert the shaft into the base bearing cone down and use a soft ham mer to install the shaft seal 36 into the base CAUTION Output shaft is not retained at this point 5 Invert this assembly so it is standing on the shaft on the press table All subassembly service or repairs should be complete at this point Continue on through UNIT ASSEMBLY to complete unit buildup UNIT ASSEMBLY REASSEMBLING Refer to exploded drawing on page 7 1 When all subassemblies are complete unit is ready to be assembled Place lower assembly back on blocks which were used during the initial disassembly proce dures for remaining unit build up Caution Output shaft is not retained at this point 2 Push retaining ring 26 into center of secondary planet carrier 8 3 Install the secondary planet carrier 8 assembly by rotating it until carrier spline lines up with shaft spline Begin pressing carrier onto shaft 4 Before secondary carrier is fully seated install retaining ring 26 onto end of output shaft 2 5 Continue pressing secondary carrier until fully seated Check retaining ring 26 to be sure it is in the ring groove 6 Place a new o ring 30 on the bearing carrier 4 Refering to scribe mar
8. across the outside of the auger drive to assure proper orientation of parts as they are re assembled 2 Todrain oil position unit on its side and remove oil plug 28 located in bearing carrier 4 To help ventilate oil while draining loosen or remove oil plug 37 located in cover 1 Maximum drainage occurs when oil is warm NOTE Particular care should be taken when placing the unit in a position for servicing Unit should be blocked up so that weight of the unit is resting on the base This fixture must be secure so that the auger drive will not tip over during disassembly and assembly procedures 3 Remove the twelve hex head cap screws 22 and hex flange nuts 24 from bail 35 Lift bail from unit NOTE There are no bolts retaining the major components together Proceed with caution when moving the unit 4 Remove the two cap screws 32 and lock washers 33 from hydraulic motor 34 Remove motor from unit Check o ring 31 for damage 5 Remove the cover 1 input gear 9 and o ring 30 6 Lift the primary planet carrier assembly out of the unit includes items 7 10 12 14 19 amp 23 7 lf sun gear 16 has not been removed from auger drive do so now Sometimes the sun gear remains in the primary carrier 7 8 Remove primary ring gear 6 and o ring 30 9 Remove retaining ring 26 from end of output shaft 2 10 Lift the secondary planetary assembly out of the unit includes items 8 11 13 15
9. first such item in which the Parts are installed or on which the Parts are mounted 4 Parts shall be deemed to have been place in service the Commencement of Service at the time the machinery or equipment manufactured or assembled by the Customer and in which the Parts are installed or on which the Parts are mounted is delivered to the Customer s dealer or the original end user which ever receives such machinery or equipment first 5 This warranty shall not apply with respect to Parts which upon inspection by Eskridge show signs of disassembly rework modifications or improper installation mounting use or maintenance 6 Eskridge makes no warranty in respect to hydraulic motors mounted on any Parts Failure of any such motor will be referred to the motor manufacturer 7 Claims under this warranty will be satisfied only by repair of any defect s or if repair is determined by Eskridge in its sole absolute and uncontrolled discretion to be impossible or impractical by replacement of the Parts or any defective component thereof No cash payment or credit will be made for defective materials or workmanship IN NO EVENT SHALL ESKRIDGE BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY KIND OR NATURE WHICH DAMAGES ARE HEREBY EXPRESSLY DISCLAIMED 8 From time to time Eskridge may make changes in the component parts manufactured by it without incorporating such changes in the component parts previously shipped Such changes s
10. hall not constitute an admission by Eskridge of any defects or problems with previously manufactured component parts 9 All freight charges on Parts returned for warranty service are the responsibility of the Customer THE FOREGOING WARRANTY IS THE SOLE WARRANTY MADE BY ESKRIDGE WITH RESPECT TO ANY PARTS AND IS IN LIEU OF ANY AND ALL OTHER WARRANTIES EXPRESSED OR IMPLIED THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE HEREOF WITHOUT LIMITING THE GENERALITY OF THE FOREGOING ESKRIDGE EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE REGARDLESS OF ANY KNOWLEDGE ESKRIDGE MAY HAVE OF ANY PARTICULAR USE OR APPLICATION INTENDED BY THE PURCHASER THE SUITABILITY OR FITNESS OF THE PARTS FOR THE CUSTOMER S INTENDED USE APPLICATION OR PURPOSE AND THE PROPER METHOD OF INSTALLATION OR MOUNTING MUST BE DETERMINED BY THE CUSTOMER WARRANTY RETURN POLICY 1 All Parts shall be returned freight prepaid 2 Any Parts qualifying for warranty will be repaired with new Parts free of charge except for freight charges as provided above 3 If parts are found to be operable you have two options a The Parts can be returned to you with a service charge for inspection cleaning and routine replacement of all rubber components and any other parts that show wear or b We can dispose of the Parts at the factory if you do not wish it to be returned NOTE Any order of Parts by customer shall on
11. ks for proper orientation install the secondary ring gear 5 onto the base 7 Place a new o ring 30 on the secondary ring gear 5 and install the primary ring gear 2 Refer to scribe marks for proper orientation 8 Check to be sure retaining ring 25 is installed on sun gear 16 Slide the sun gear into the secondary planet carrier 9 Install the primary carrier 7 by rotating until spline lines up with sun gear It may be easier to install the sun gear 12 into the bottom of the primary carrier and then install primary carrier 10 Slide the input gear 13 into the primary planet carrier 11 Install a new o ring 30 onto the cover 6 and position the cover with the proper orientation to the scribed line 12 Install o ring 31 onto the hydraulic motor 34 13 Attach hydraulic motor 34 to mounting pad on cover 1 with two capscrews 32 and lock washers 33 Torque to 130 ft lbs 14 Line up scribe mark on bail assembly 35 with scribe mark on cover 1 and place bail over hydraulic motor 34 Install twelve cap screws 22 with hex flange nuts 24 and torque to 30 ft lbs 15 Fill to proper level as specified on page 2 with EP 80 90 gear oil after unit is sealed with a brake and or motor THE AUGER DRIVE IS NOW READY TO USE PRODUCT WARRANTY ESKRIDGE INC Eskridge warrants to its original purchaser Customer that new component parts Parts sold by Eskridge to the Custome
12. ly be accepted by Eskridge subject to the terms stated herein Any purchase order forms used by Customer to accept this offer to sell which contain terms contrary to different from or in addition to the terms herein shall be without effect and such terms shall constitute material alteration of the offer contained herein under K S A 84 2 207 2 b and shall not become part of the contract regarding the sale of the Parts Salle diS HYDRASYNC MODELS 78 35 amp 78 48 BOE EFFECTIVE FROM S N 17098 08 12 93 TO CURRENT TEM DESCRIPTION 18 35 18 48 fs COVER C MOUNT 773 004 1154 73 004 1154 1 71 04 1383 BEARING CUP LOWER 01 103 0080 BEARING CARRIER T 1 004 2144 6 1 RINGGEAR PR THR 73 004 1083 8 1 CARRIER SEC RRR 71 004 0073 pe fa meuren robot ROE 12 e WASHER PRI 71 004 0861 71 04 0864 e e wasHerseo nas TTS 19 6 BEARING PLANETPRI 01 105 0010 01 105 0010 23 e ROLLPIN ex 01 153 0020 01 153 0020 BAILASSY 1 172 BAIL BOSS DIA OPTIONS SEAL KIT P N 76 016 2011 INCLUDES 3 OF ITEM 30 AND 1 EA OF ITEMS 31 AND 36 n Gp rar d E C N 1737 SERV 78EXPLa REVA DATE 11 03 99 CG SZ 7SER SERVICE DIVISION BULLETIN 013 Revision 1 supersedes bulletin dated 01 14 86 DATE 06 01 87 REFERENCE All Model 71 76 72 77 and 73 78 Auger drive units SUBJECT Inspection of Secondary Carriers When repairing updating or inspecting an auger drive
13. r will be free of defects in material and workmanship and will conform to standard specifications set forth in current Eskridge sales literature or to any custom specifications of the Customer acknowledged in writing by Eskridge SUBJECT TO THE FOLLOWING QUALIFICATIONS AND LIMITATIONS 1 Prior to placing warranted Parts in service the Customer shall provide proper storage such that foreign objects e g rain or debris cannot enter any Parts via entry ports which are normally closed during operation 2 If Parts requiring motorized power for operation are received from Eskridge without a motor documentation must be available indicating proper lubrication upon placement of the Parts in service 3 The Customer must notify Eskridge in writing of any claim for breach of this warranty promptly after discovery of a defect and in any event prior to the termination of the warranty period which shall commence when a unit is placed in service and shall expire upon the earlier of i the expiration of twelve 12 months from the date of Commencement of Service as defined in Paragraph 4 ii the completion of one thousand 1 000 hours of service of the Parts iii the expiration of six 6 months after the expiration of any express warranty relating to the first item of machinery or equipment in which the Parts are installed or on which it is mounted or iv the installation or mounting of the Parts in or on an item of machinery or equipment other than the
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