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Engine exhaust contains products of combustion which may be harmful to your health. 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 engine is running unless otherwise specified. |
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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 or death can result from improperly checking for a leak. Always use a board or cardboard when checking for a leak. Escaping air or fluid under pressure, even a pin-hole size leak, can penetrate body tissue causing serious injury, and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury. |
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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. |
| Required Tools | |||
|---|---|---|---|
| Tool | Part Number | Description | Qty |
| A(1) | 198-4234 | Digital Indicator | 1 |
| B | 198-4236 | Adapter Cable As | 1 |
| C | 198-4238 | Pressure Sensor Gp Zero to |
1 |
| (1) | Tool (A) and Tool (B) are part of the 198-4240 Digital Pressure Indicator Gp. |
- Drive the machine to a smooth, horizontal surface.
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Illustration 1 g06144094 - Move propel lever (1) to the neutral position.
- Move parking brake switch (2) to the on position.
- Place the engine in ECO mode or low idle.
- Select "Main Menu" (3) on the machine display.
- Select "Machine Setup" (4).
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Illustration 3 g06148261 - Select "Engine Spd Sw" (5).
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Illustration 4 g06148286 - Select "ECO" (6) or "Low" (7).
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Illustration 2 g06148038 Show/hide table
Illustration 5 g06144108 - Move engine start switch (8) to the off Position.
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Illustration 6 g06143919 - Unlock latch (9) and open engine compartment door (10) on the right side of the machine.
- Connect Tool (B) to Tool (C). Connect Tool (B) to Tool (A).
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Illustration 7 g06152388 - Connect Tool (B) to port "G" (11) on the steering manifold.
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Illustration 8 g06152393 - Place the steer lock (12) in the lock position.
- Move engine start switch (8) to the start position.
- Operate the hydraulic system until the oil temperature reaches the test temperature of
45 °C (113 °F) . - Move parking brake switch (2) to the off position.
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Illustration 9 g06144633 - Rotate steering wheel (13). Hold the steering wheel and read pressure on Tool (A) The pressure should be
20000 ± 1000 kPa (2900 ± 145 psi) . - Return the steering wheel to the straight travel position.
- Move parking brake switch (2) to the on position.
- Place the engine in ECO mode or low idle.
- Move engine start switch (8) to the off position.
- If the pressure is inside the specified range, go to Step 23. If the pressure is outside the specified range, go to Step 19.
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Illustration 10 g06152416 - Loosen locknut (15) on steering relief valve.
- To increase the pressure, turn adjustment screw (14) clockwise. To decrease the pressure, turn the adjustment screw counterclockwise.
- Hold adjustment screw (14) and tighten locknut (15) to a torque of
14 N·m (10 lb ft) to16 N·m (12 lb ft) . - Go to Step 10 and retest.
- Remove Tool (C) from port "G" (11) on the steering manifold.
- Place the steer lock (12) in the "unlocked" position.
- Close the right engine compartment door.
