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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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Personal injury can result from rotating and moving parts. Moving fan blades and moving parts will throw or cut any object or tool that falls or is pushed into them. Make sure no one is working on, underneath or close to an engine that is running. Make sure the area is free of personnel. |
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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. |
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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. |
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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 | 8T-0860 | Pressure Gauge 0 to 40000 kPa (0 to 5800 psi) |
2 |
| 6V-4144 | Quick Connect Coupler | 2 | |
| B | 177-7860 | Hose As | 2 |
| 6V-4142 | Fitting | 2 | |
| 6V-4143 | Quick Connect Coupler | 2 | |
| C | 4C-6500 | Digital Thermometer | 1 |
- 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 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 right 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 | g01408213 |
- Remove bolts (7) and remove left cover plate (8) .
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| Illustration 6 | g01408215 |
- Connect Tool (A) to Tool (B). Make two sets of tools. Assemble Tool (C). Install Tool (C) on one Tool (B) .
- Remove the cap from port "Mb" (9). Connect one Tool (B) to the LOW amplitude pressure tap in port "Mb" (9) on the vibratory pump.
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| Illustration 7 | g01408216 |
The Vibrator Pump is Shown From Right Side. | |
- Remove the cap from port "Ma" (10). Connect second Tool (B) to the HIGH amplitude pressure tap in port "Ma" (10) on the vibratory pump.
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| Illustration 8 | g01408218 |
The Vibrator 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 (C). Operate the machine until the oil temperature reaches 43 ± 5.6 °C (110 ± 10 °F).
- Move amplitude selector switch (11) to the LOW AMPLITUDE position.
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| Illustration 9 | g01408221 |
- Actuate vibratory switch (12) on the propulsion lever.
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| Illustration 10 | g01408237 |
- Watch the pressure at port "Mb" (9). Record the initial pressure reading as the main relief pressure is shown on the gauge for a brief period. Then the pressure will reduce down to the operating pressure. The main relief pressure should be 39000 ± 1500 kPa (5656 ± 218 psi).
- Actuate vibratory switch (12) in order to stop the vibratory system.
- Move amplitude selector switch (11) to the HIGH AMPLITUDE position.
- Actuate vibratory switch (12) on the propulsion lever.
- Watch pressure at port "Ma" (10). Record the initial pressure reading as the main relief pressure is shown on the gauge for a brief period and then the pressure reduces down to operating pressure. The main relief pressure should be 39000 ± 1500 kPa (5656 ± 218 psi).
- Actuate vibratory switch (12) in order to stop the vibratory system.
- Move throttle switch (3) to the LOW IDLE position.
- Move engine start switch (4) to the OFF position.
- If the pressure is inside the specified range, go to Step 27. If the pressure is outside the specified range, go to Step 25.
- Use the following procedure to adjust the main relief valves:
- Remove cap (13) from the relief valve or remove cap (14) from the relief valve.
- Remove the relief valve cartridge from the pump. Reinstall cap (13) or cap (14) in order to prevent oil from leaking out the ports.
- Clamp the relief valve cartridge in a soft vise jaw. Loosen locking setscrew (15) with a 3 mm Allen wrench.
Show/hide table
Illustration 13 g01408244
The arrows indicate the position for clamping.
- Use a 5 mm wrench to turn spindle (16). Turn the spindle clockwise in order to increase pressure. Turn the spindle counterclockwise in order to decrease pressure.
Note: One full revolution of spindle (16) changes the pressure setting by approximately 4400 kPa (638 psi).
- Tighten locking setscrew (15) .
- Remove the relief valve cartridge from the vise.
- Remove relief valve cap (13) or cap (14) and install the relief valve cartridge in the vibration pump. Reinstall the relief valve cap.
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| Illustration 11 | g01408238 |
Low Amplitude Vibratory Relief Valve | |
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| Illustration 12 | g01408239 |
High Amplitude Vibratory Relief Valve | |
- Go to Step 11.
- Remove Tool (B) from port "Ma" (10) and from port "Mb" (9). Reinstall rubber caps.
- Replace cover plate (6) and install bolts (5). Replace cover plate (8) and install bolts (7) .