VIBRATORY DRUM Caterpillar


Drum Disassembly

Usage:

A. Vibratory Coupling Removal

------ WARNING! ------

Use caution when moving drum with hoist. Drum could spin, causing injury to personnel. Make sure area around drum is clear before moving drum.

--------WARNING!------

1. Use a hoist (or other appropriate lifting device) to set the drum down on its side.

2. Block the drum to prevent accidental rolling.


NOTICE

It is not necessary to drain drum lubricant unless stub shaft (on vibratory side of drum) or bearing housing (on propel side of drum) are to be removed.


3. Remove drain plugs from stub shaft to drain drum lubricant.

4. Remove the six bolts securing the hydraulic motor mount. Lift the hydraulic motor mount out of the roller bearing housing.

5. Remove the cylinder hub and hytrel element pieces of the centaflex coupling.

6. Remove the bolt securing the flange hub part of the centaflex coupling to the end of the weight shaft.


NOTICE

A tool like the one shown below, will help hold the weight shaft in place while removing the bolt.


7. Remove the flange hub and the key off the weight shaft.

B. Support Bearing Removal

------ WARNING! ------

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.

--------WARNING!------

------ WARNING! ------

Use caution when moving drum with hoist. Drum could spin, causing injury to personnel. Make sure area around drum is clear before moving drum.

--------WARNING!------

1. Attach a clamp to vibratory edge of drum. Use a hoist (or other appropriate lifting device) to set drum on end with vibratory side of drum up.

2. Remove the eight flat socket head screws securing the retainer collar. Remove the seal, the retainer collar, and the o-ring from the vibratory shaft.


NOTICE

These flat socket head screws must be replaced with new parts during reassembly.


3. Attach a hoist (or other appropriate lifting device) to the roller bearing housing as illustrated.

4. Carefully pull the roller bearing housing straight off the stub shaft.


NOTICE

The support bearing assembly consists of two matched bearings. The bearings should be replaced as a set only. Do not mix parts.


5. Remove outer bearing cone from roller bearing housing.

6. Using a suitable puller or driver, remove bearing cups and spacer from roller bearing housing.

7. Using a suitable puller, remove inner bearing cone from stub shaft.


NOTICE

When removing the inner bearing half with a torch, use care to prevent damage to the stub shaft.


8. If a puller is not available, cut the inner bearing cone at two places with a torch. Remove bearing cone from stub shaft.

C. Stub Shaft And Weight Shaft Removal

1. Clearly mark stub shaft and drum head for reference at reassembly.

2. Remove the six bolts securing the stub shaft to the drum.

3. Thread four bolts in blind holes. Alternately turn bolts in to push stub shaft free from drum.

------ WARNING! ------

Heavy component. Avoid possible injury. Do not move prior to securely attaching a proper lifting device.

--------WARNING!------

------ WARNING! ------

The weight shaft may pull out with the stub shaft. To prevent this, push in on end of weight shaft while removing stub shaft.

--------WARNING!------

4. Attach a hoist to the stub shaft. Carefully lift the stub shaft straight off the drum.

5. Set stub shaft on blocks with weight bearing side up.


NOTICE

Take care to prevent the weight shaft from hitting the drum during removal.


6. Thread a lifting eye into the end of the weight shaft. Use a hoist to lift the weight shaft straight out of the drum.

D. Weight Bearing Removal


NOTICE

Refer to the Bearing Wear Tests section of this manual to check bearing wear. The weight bearing does not have to be removed unless it is worn or damaged.


1. Remove the six bolts securing the bearing retainer to the inside of the stub shaft. Remove the bearing retainer.

2. Place the stub shaft on blocks, bearing side down.

3. Insert three one inch flat washers between the bearing and stub shaft.

4. Insert a length of pipe with a 63 mm (2.5 in.) diameter, into the stub shaft against the washers.

5. Using a large hammer, firmly strike the top of the pipe, knocking the bearing out of the stub shaft.


NOTICE

If bearing condition will not permit removal by the above method, a torch may be used to cut the inner bearing race, allowing removal of inner race and bearings. Weld a bead around the center of outer race. Pull outer race out of stub shaft.


E. Bearing Housing Removal

------ WARNING! ------

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.

--------WARNING!------

------ WARNING! ------

Use caution when moving drum with hoist. Drum could spin, causing injury to personnel. Make sure area around drum is clear before moving drum.

--------WARNING!------

1. Using clamps and a hoist, set the drum on its side. Lift drum on end with propel side of drum up.

2. Clearly mark the bearing housing and drum head for reference at reassembly.

3. Remove the six bolts securing the bearing housing to the drum.

4. Remove the shock mount brackets and the shock mounts from the drum.

5. Thread four bolts in blind holes. Alternately turn bolts in to push bearing housing free from drum.

6. Remove the center plug from the bearing housing and install a lifting eye, capable of supporting the bearing housing.

------ WARNING! ------

Heavy component. Avoid possible injury. Do not move prior to securely attaching a proper lifting device.

--------WARNING!------

7. Attach a hoist to the lifting eye. Carefully lift the bearing housing straight off the drum.

8. Set bearing housing on blocks with weight bearing side up.

F. Weight Bearing Removal


NOTICE

Refer to the Bearing Wear Tests section of this manual to check bearing wear. The weight bearing does not have to be removed unless it is worn or damaged.


1. Remove the six bolts securing the bearing retainer to the inside of the bearing housing. Remove the bearing retainer.

2. Attach an internal bearing puller to the bearing housing and weight bearing as illustrated.

3. Use the puller to remove the bearing from the bearing housing.


NOTICE

If bearing condition will not permit removal by the above method, a torch may be used to cut the inner bearing race, allowing removal of inner race and bearings. Weld a bead around the center of outer race. Pull outer race out of bearing housing.


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