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Diesel engine exhaust contains products of combustion which may cause personal injury. Always start and operate the engine in a well ventilated area, and, if in an enclosed area, vent the exhaust to the outside. |
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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. |
| 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. |
| Machine Test Parameters | ||
|---|---|---|
| Date | Product or Component SN | |
| Measurement Location | Measurement | Actual |
| Hydraulic oil temperature for test | |
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| Illustration 1 | g06251219 |
| Test Specifications | ||
|---|---|---|
| Date | Product or Component SN | |
| Test | Rates | Actual |
| The pressure at charge pressure tap (11) | |
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Charge pressure is used to move the swashplate in the pump. Charge oil also replenishes oil lost to internal leakage and system flushing in the hydrostatic drive circuit. Charge pressure should be tested if any of the following symptoms are experienced:
- The machine response is erratic or sluggish.
- The hydraulic oil is overheating.
- The parking brakes are dragging.
- Machine power is low.
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| Illustration 2 | g06204647 |
| Required Tools | ||||
|---|---|---|---|---|
| Tool | Item | Qty | Part No | Description |
| A | 198-4240 | Digital Pressure Indicator Gp | ||
| A1 | 1 | 198-4234 | Digital Indicator | |
| A2 | 1 | 198-4237 | Pressure Sensor Gp
(0 to 3500 kPa (0 to 500 psi)) |
|
| A3 | 1 | 198-4236 | Adapter Cable As | |
- Connect Tool (A2) to Tool (A3).
- Connect Tool (A3) to Tool (A1).
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| Illustration 3 | g03850826 |
| Optional Tools(1) | ||||
|---|---|---|---|---|
| Tool | Item | Qty | Part No | Description |
| B | B1 | 1 | 8T-0855 | Pressure Gauges
(0 - 4000 kPa (0 - 580 psi)) |
| B2 | 1 | 6V-4144 | Quick Connect Couplers | |
| C | C1 | 1 | 6V-4142 | Fittings |
| C2 | 1 | 177-7860 | Hose As | |
| C3 | 1 | 6V-4143 | Quick Connect Couplers | |
| (1) | The optional tools can be used to replace the digital pressure gauges in the required tool list. |
- Connect Tool (C) to Tool (B).
- Drive the machine to a smooth, horizontal surface.
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Illustration 4 g06250503 - Move propel lever (1) to the NEUTRAL position.
- Move parking brake switch (2) to the ON position.
- Place the engine in ECO mode or in low idle.
- Select "Main Menu" (3) on the machine display.
- Select "Machine Setup" (4).
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Illustration 6 g06250567 - Select "Engine Spd Sw" (5)
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Illustration 7 g06250569 - Select "ECO" (7) or "Low" (6).
Note: Shutting down the engine in high idle may damage engine components
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Illustration 5 g06250549 Show/hide table
Illustration 8 g06250571 - Move engine start switch (8) to the OFF position.
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Illustration 9 g06250575 - Unlock latch (9) and open engine compartment door (10) on the right side of the machine.
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Illustration 10 g06251219 - Remove cap and connect Tool (A) to charge pressure tap (11) on the vibratory pump.
- Move engine start switch (8) to the START position. Release the switch when the engine starts.
- Place the engine in high idle.
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Illustration 11 g06251230 - Monitor hydraulic oil temperature (12) on the operator display . Operate the machine until the oil temperature reaches the test temperature given in the "Specifications" section.
- Read the pressure on Tool (A) on charge port (11) on the vibratory pump. The pressure should be inside the specified range listed in the "Specifications" section.
- Place the engine in ECO mode or in low idle.
- Move engine start switch (8) to the OFF position.
- If the pressure recorded in Step 4 is outside the specified range, perform the "Adjustment Procedure". If the pressure is inside the specified range, go to the next step.
- Remove Tool (A) from charge pressure tap (11) on the vibratory pump. Install the cap on the charge pressure tap.
- Close engine compartment door (10) and secure latch (9).
- Hold adjustment screw (14) in place and loosen lock nut (13).
- If the pressure is too low, Turn adjustment screw (14) clockwise. If pressure is too high, turn the adjustment screw counter-clockwise.
- Hold adjustment screw (14) in place and tighten lock nut (13).
- Go to "Test Procedure" and retest the charge pressure.
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| Illustration 12 | g06251248 |
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| Illustration 13 | g06251250 |