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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 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 | |||
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| Tool | Part No | Description | Qty |
| A(1) | 198-4234 | Digital Indicator | 1 |
| B(1) | 198-4236 | Adapter Cable As | 2 |
| C(1) | 198-4239 | Pressure Sensor Gp (0-41 340 kPa) (0-6000 psi) | 2 |
| D | 6V-9828 | Cap As | 3 |
| E | 6V-9507 | Cap As | 3 |
| 4J-5477 | O-Ring Seal | 3 | |
| F | 251-0030 | Infrared Thermometer | 1 |
| (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 g06108868 - Move propel lever (1) to the NEUTRAL position.
- Move parking brake switch (2) to the ON position.
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Illustration 2 g06108976 - Use throttle control switch (3) to operate the engine in ECO mode or in low idle.
Note: Two things indicate when the engine is in ECO mode. First, "ECO" will appear on the display. Second, the second LED next to throttle control switch (3) will be illuminated. Two things indicate when the engine is at low idle. First, "Low Idle" will appear on the display. Second, the first LED next to the throttle control switch will be illuminated.
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Illustration 3 g06108978 - Move engine start switch (4) to the OFF position.
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Illustration 4 g06112517 - Disconnect brake supply hose assembly (5) from the drum. Hand tighten Tool (D) on the port, and then loosen the cap one half turn to allow chamber venting. Use Tool (E) to plug the hose assembly.
Note: 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 container.
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Illustration 5 g06115221 - Disconnect hose assembly (7) from port "MA" of the test block. Use Tool (D) to plug the hose assembly. Use Tool (E) to cap the port.
- Disconnect hose assembly (6) from port "MB" of the test block. Use Tool (D) to plug the hose assembly. Use Tool (E) to cap the port.
- Assemble the tooling. Connect Tool (C) to Tool (B). Connect Tool (B) to Tool (A).
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Illustration 6 g06112535 - Connect one Tool (C) to reverse pressure tap (8) in port "DR" of the test block. Connect second Tool (C) to forward pressure tap (9) in port "DF" of the test block.
- Move engine start switch (4) to the START position. Release the switch when the engine starts.
- Operate the engine at low idle for a few minutes. Use throttle control switch (3) to operate the engine in high idle.
Note: Two things indicate when the engine is at high idle. First, "High Idle" will appear on the display. Second, the third LED next to throttle control switch (3) will be illuminated.
- Monitor the hydraulic oil temperature with Tool (F). Operate the machine until the oil temperature reaches
49 ± 6 °C (120 ± 10 °F) .Show/hide table
Illustration 7 g06113585 - Use propel mode switch (10) to shift the propel motors into the LOW SPEED position.
Note: Two things indicate when the propel motors are in the LOW SPEED position. First, "Propel Mode Low" will appear on the display. Second, one LED next to propel mode switch (10) will be illuminated.
- Use speed control switches (11) to set the propel speed to 100 percent.
Note: Two things indicate when the propel speed is set to 100 percent. First, "Speed Control % 100" will appear on the display. Second, seven LEDs next to speed control switches (11) will be illuminated.
- Move parking brake switch (2) to the OFF position.
Note: The machine may move during the next steps. The drum may rotate several degrees to remove the backlash in the gear train. After the backlash in the gear train has been removed, the drum may slide depending on the underfoot conditions but the drum should not rotate.
- Move propel lever (1) into the FULL FORWARD position. Monitor pressure on Tool (A). The pressure should be
35500 ± 1000 kPa (5150 ± 145 psi) . The drum should not rotate after the backlash in the gear train has been removed. - Move propel lever (1) into the FULL REVERSE position. Monitor pressure on Tool (A). The pressure should be
35500 ± 1000 kPa (5150 ± 145 psi) . The drum should not rotate after the backlash in the gear train has been removed. - Move propel lever (1) to the NEUTRAL position.
- Move parking brake switch (2) to the ON position.
- Move engine start switch (4) to the OFF position.
- Remove the tooling from reverse pressure tap (8) in port "DR" of the test block. Remove the tooling from forward pressure tap (9) in port "DF" of the test block.
- Remove the tooling from hose assembly (7) and port "MA" of the test block. Connect the hose assembly to the port.
- Disconnect hose assembly (6) from port "MB" of the test block. Use Tool (D) to plug the hose assembly. Use Tool (E) to cap the port.
- Remove Tool (D) from the brake inlet port. Remove Tool (E) from the brake supply hose assembly. Connect brake supply hose assembly (5) to the brake inlet port.
