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Personal injury can result from rotating and moving parts. Stay clear of all rotating and moving parts. Never attempt adjustments while the machine is moving or the engine is running unless otherwise specified. The machine must be parked on a level surface and the engine stopped. Attach a "Do Not Operate" or similar warning tag to the start switch and controls before servicing, repairing, or making adjustments to the machine. |
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Personal injury or death can result from sudden machine movement. Sudden movement of the machine can cause injury to persons on or near the machine. To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine. |
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Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the attachments have been lowered, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. |
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| NOTICE |
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Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide", for tools and supplies suitable to collect and contain fluids in Caterpillar machines. Dispose of all fluids according to local regulations and mandates. |
| NOTICE |
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In order to avoid damage to the vibrator system during testing, always perform the testing with the vibrator drum on top of tires or on loose dirt. Tires will simulate a non-compacted soil condition Never operate the vibrator system when the machine is on concrete. |
| NOTICE |
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If a testing time longer than three minutes is required, rotate the drum periodically in order to lubricate the eccentric weight shaft bearings. |
| Required Tools | |||
|---|---|---|---|
| Tool | Part Number |
Description | Qty |
| A (1) | 198-4234 | Pressure Gauge Tool Gp | 1 |
| B (1) | 198-4236 | Adapter Cable As | 1 |
| C (1) | 198-4237 | Pressure Sensor Gp | 1 |
| D | 4C-6500 | Digital Thermometer | 1 |
| ( 1 ) | Tool (A), Tool (B), and Tool (C) are part of 198-4240 Digital Pressure Indicator . |
- Drive the machine to a smooth, horizontal surface on loose, uncompacted soil.
Note: If loose, uncompacted soil is unavailable, drive the machine onto an unusable, loose tire without rims and with a carcass of substantial stiffness in order to support the drum. If tires are used, the drum should be a minimum of 102 mm (4 inch) above the ground.
- Move propulsion lever (1) to the NEUTRAL position.
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| Illustration 1 | g01407630 |
- Move parking brake switch (2) to the ON position.
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| Illustration 2 | g01407609 |
- Move throttle switch (3) to the LOW IDLE position.
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| Illustration 3 | g01407610 |
- Move engine start switch (4) to the OFF position.
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| Illustration 4 | g01407660 |
- Remove bolts (5) and remove left cover plate (6) .
Note: The cab can be tilted in order to provide greater access to components under the cab. However, the cab must be lowered and fastened before the machine is operated. Refer to Disassembly and Assembly, KENR6413, "Cab - Tilt".
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| Illustration 5 | g01408841 |
- Connect Tool (C) to Tool (B). Connect Tool (B) to Tool (A).
- Connect Tool (C) to charge pressure tap (7) on the drum propulsion pump.
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| Illustration 6 | g01408843 |
The Drum Pump is Shown From Left Side. | |
- Move engine start switch (4) to the START position. Release the switch when the engine starts.
- Operate the engine at low idle for few minutes. Move throttle switch (3) to the HIGH IDLE position.
- Monitor hydraulic oil temperature with Tool (D). Operate the machine until the oil temperature reaches 43 ± 5.6 °C (110 ± 10 °F).
- Record pressure on Tool (A) .
- Move amplitude selector switch (8) to the LOW AMPLITUDE position.
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| Illustration 7 | g01408845 |
- Actuate vibratory switch (9) on the propulsion lever in order to start the vibrator.
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| Illustration 8 | g01408853 |
- Read pressure on Tool (A). Subtract the pressure that was recorded in this step from the pressure which was recorded in Step 12. The pressure drop should be 50 plus 100 and minus 30 kPa (7 plus 14 and minus 4 psi).
- Actuate vibratory switch (9) on the propulsion lever in order to stop the vibrator.
- Move amplitude selector switch (8) to the HIGH AMPLITUDE position.
- Actuate vibratory switch (9) on the propulsion lever in order to start the vibrator.
- Read pressure on Tool (A). Subtract the pressure that was recorded in this step from the pressure which was recorded in Step 12. The pressure drop should be 50 plus 100 and minus 30 kPa (7 plus 14 and minus 4 psi).
- Actuate vibratory switch (9) on the propulsion lever in order to stop the vibrator.
- Move throttle switch (3) to the LOW IDLE position.
- Move engine start switch (4) to the OFF position.
- Remove Tool (C). Replace cover plate (6). Install bolts (5) .
- If the pressure drop cannot be confirmed, perform the procedure Testing and Adjusting, "Case Drain Flow for Piston Motor (Vibratory) - Test" in this publication.