Usage:
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Thoroughly clean all parts before reassembly. Inspect parts for damage or excessive wear. Repair or replace parts as necessary. Replace all o-rings and seals with new parts during reassembly. |
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When torque specifications for nuts and bolts are not given in this manual, standard torques should be used. A chart with standard torque specifications is located in the rear of the Technical Information and Minor Services Module. |
A. Weight Bearing Replacement
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This procedure applies to bearing housing and stub shaft weight bearing replacement. |
1. Carefully clean the bearing housing and stub shaft before installing bearings.
2. Make certain oil metering holes are clean and free of obstructions.
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Parts heated to 82° C (180° F) will cause immediate burns if touched with bare skin. Asbestos or suitable gloves should be used for handling bearings or injury will result. |
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Overheating component will cause damage. Check temperature of stub shaft or bearing housing with a 77° C (170° F) thermal stick. |
3. Heat stub shaft or bearing housing with a torch. Use a slow circular motion, so that the entire stub shaft or bearing housing reaches approximately 82° C (180° F).
4. Slide weight bearing into stub shaft or bearing housing.
5. If bearing will not seat, a brass drift may be used to carefully tap the bearing in place. The brass drift should only be used against the outer bearing race.
6. After the stub shaft or bearing housing has cooled, bolt the bearing retainer in place. The bearing retainer must be placed with the grooved side toward the bearing. Torque the bolts to 34 N-m (25 ft.-lb.).
7. Tap bearing retainer with a brass drift to further seat the bearing. Recheck the torques on bolts to make sure they are all at 34 N-m (25 ft.-lb.).
B. Support Bearing Replacement
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The support bearing assembly consists of two matched bearings. The bearings should be replaced as a set only. Do not mix parts. |
1. Carefully clean the surface of the stub shaft before installing the support bearing.
2. Using an oil bath or oven, heat inner bearing cone to 82° C (180° F).
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If the methods above are not available, a torch may be used to heat the bearing. When using this method, the bearing should be placed on a steel plate with the flame directed to the plate in the center of the bearing. Do not place flame directly on bearing. |
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Parts heated to 82° C (180° F) will cause immediate burns if touched with bare skin. Asbestos or suitable gloves should be used for handling bearings or injury will result. |
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Overheating component will cause damage. Check temperature of bearing with a 77° C (170° F) thermal stick. |
3. Slide inner bearing cone onto stub shaft with taper outward.
4. Install bearing cups and spacer (as illustrated) into roller bearing housing using a flat board and a mallet.
5. Once the bearing cups are flush with the surface of the roller bearing housing, use the hydraulic motor mount to drive the bearing cups and spacer to the rim inside the roller bearing housing. Remove the hydraulic motor mount.
6. Thoroughly grease the housing slots on stub shaft. Place the roller bearing housing on stub shaft.
7. Heat the outer bearing cone, using the same procedure as for the inner bearing cone.
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Parts heated to 82° C (180° F) will cause immediate burns if touched with bare skin. Asbestos or suitable gloves should be used for handling bearings or injury will result. |
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8. Slide outer bearing cone (taper in) inside the roller bearing housing, onto the stub shaft.
9. When the bearing has cooled, install the collar retainer with a new o-ring, inside the roller bearing housing on top of bearing. Bolt collar retainer to end of stub shaft with eight new flat socket head screws. Torque to 34 N-m (25 ft.-lb.).
10. Tap (stake) edges of flat socket head screws to prevent them from loosening.
C. Bearing Housing Replacement
1. Thoroughly clean and vacuum inside of drum.
2. Clean the bearing housing thoroughly. Install a new o-ring over the inside of the bearing housing.
3. Insert threaded studs, about 76 mm (3 in.) long, into two opposite mounting holes in the drum head.
4. Attach a hoist to the lifting eye at the center of the bearing housing.
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Heavy component. Avoid possible injury. Do not move prior to securely attaching a proper lifting device. |
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When installing the bearing housing, remember to align the marks put on the bearing housing and drum head during disassembly. |
5. Raise the bearing housing with the hoist. Using the threaded studs as guides, lower the bearing housing in place on the drum.
6. Remove the two threaded studs from the drum head. Remove the lifting eye from the bearing housing and reinstall the plug.
7. Check the condition of the rubber shock mounts. Replace any that show signs of severe cracking, fatigue or breakage.
8. Bolt the three shock mounts to the shock mount brackets if these pieces have been disassembled.
9. Put the three shock mount assemblies in place on the bearing housing. Install six bolts to secure the shock mounts and bearing housing to the drum head. Torque the six bolts to 300 N-m (220 ft.-lb.).
D. Drum Drive Installation
1. If disassembled, reassemble the drum drive assembly. Refer to the next section; Drum Drive Assembly.
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Heavy component. Avoid possible injury. Do not move prior to securely attaching a proper lifting device. |
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2. Attach a hoist to two holes in the planetary mount as illustrated. Carefully lift the drum drive assembly and set in place on the shock mounts.
3. Secure the drum drive assembly to the shock mounts with 12 bolts.
E. Drum Drive Assembly
1. Secure the planetary mount to the torque hub with eight bolts.
2. Install the drum drive mount to the above assembly with five Budd nuts.
3. Connect the torque hub lube hose to the planetary mount.
4. Install the propel motor to the torque hub.
F. Weight Shaft And Stub Shaft Replacement
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Lifting the drum without using a properly sized clamp and hoist could cause the drum to fall, causing damage to equipment or injury to personnel. |
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Use caution when moving drum with hoist. Drum could spin, causing injury to personnel. Make sure area around drum is clear before moving drum. |
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1. Use a hoist to set the drum on its side. Attach a clamp to vibratory edge of drum. Use a hoist to set edge of drum on blocks with vibratory side of drum up.
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Examine the oil slinger before installing the weight shaft in the next step. If the oil slinger is bent or damaged, or if the welds appear fatigued, the oil slinger must be repaired or replaced. |
2. Insert the short end of the weight shaft in the drum, into the weight bearing.
3. Clean the inside surfaces of the stub shaft thoroughly. Install a new o-ring over the inside of the stub shaft.
4. Insert threaded studs, about 76 mm (3 in.) long, into two opposite mounting holes in the drum head.
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Heavy component. Avoid possible injury. Do not move prior to securely attaching a proper lifting device. |
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When installing the stub shaft, remember to align the marks put on the stub shaft and drum head during disassembly. |
5. Raise the stub shaft and bearing assembly with the hoist. Using the threaded studs and weight shaft as guides, lower the stub shaft in place on the drum. Remove the two threaded studs.
6. Fasten the stub shaft to the drum with six bolts. Torque bolts to 300 N-m (220 ft.-lb.).
7. Remove one plug from the stub shaft. Add lubricant to the drum per the lubrication chart for this machine.
G. Vibratory Coupling Installation
1. Install seal around weight shaft. Work seal into the groove between weight shaft and retainer collar.
2. Install the flange hub part of the centaflex coupling over the weight shaft with a key as illustrated.
3. Secure the flange hub to the weight shaft with one bolt. Torque to 122 N-m (90 ft.-lb.).
4. Perform the weight bearing end play check. Refer to the Bearing Wear Tests section of this manual.
5. Install the hytrel element and the cylinder hub parts of the centaflex coupling.
6. Apply a little grease to the inside flange of the hydraulic motor mount. Install the hydraulic motor mount to the roller bearing housing. Torque the six bolts to 34 N-m (25 ft.-lb.).
7. Install the vibratory motor to the hydraulic motor mount. Torque the two bolts to 34 N-m (25 ft.-lb.).
