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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. |
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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(1) | 198-4236 | Adapter Cable As | 2 |
| C(1) | 198-4237 | Pressure Sensor Gp
0 to |
2 |
| D | 110-6349 | Fitting As | 2 |
| (1) | Tool (A), Tool (B), and Tool (C) are part of the 198-4240 Digital Pressure Indicator Gp. |
- Drive the machine to a smooth, horizontal surface.
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Illustration 1 g06160408 - 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 g06160422 - Move engine start switch (8) to the OFF position.
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Illustration 6 g06160385 - Unlock latch (9) and open engine compartment door (10) on the right side of the machine.
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Illustration 7 g06162911 - Mark the connectors, then disconnect solenoid electrical connections (11).
- Assemble the tooling. Connect Tool (B) to Tool (C). Assemble two sets of Tool (B) and Tool (C).
- Connect both sets of Tool (B) to Tool (A).
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Illustration 8 g06162919 - Remove the plugs from port "X1" (12) and port "X2" (13). Install one Tool (D) in port "X1". Install other Tool (D) in port "X2".
- Connect one Tool (C) to Tool (D) installed in port "X1" (12). Connect second Tool (C) to Tool (D) installed in port "X2" (13). Reset Tool (A) to read differential pressure.
- Move engine start switch (8) to the START position. Release the switch when the engine starts.
- Place the engine in high idle.
- Operate the hydraulic system until the oil temperature reaches the test temperature of
45 °C (113 °F) . - Read differential pressure on Tool (A). Differential pressure should be less than
260 kPa (38 psi) . - If, differential pressure is less than
260 kPa (38 psi) go to Step 19. If the differential pressure is greater than260 kPa (38 psi) , go to Step 17.Show/hide table
Illustration 9 g06162925 Note: Small movement of the adjustment screw can result in a large pressure change. Hold the adjustment screw securely in place when the lock screw is loosened.
- Loosen lock screw (14). Watch pressure on Tool (A). If necessary, rotate adjustment screw (15) until the differential pressure is less than
260 kPa (38 psi) . - Hold adjustment screw (15) and tighten lock screw (14).
- Move engine start switch (8) to the OFF position.
- Remove tooling from Tool (D) in port "X1" (12) and port "X2" (13).
- Remove Tool (D) from port "X1" and from port "X2". Install plugs in port "X1" and port "X2".
- Connect solenoid electrical connectors (11).
- Close engine compartment door (10) on the right side of machine and secure latch (9).
