Left Propel Pump
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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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| 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. |
| Required Tools | |||
|---|---|---|---|
| Tool | Part Number | Description | Qty |
| A | 8T-0855 | Pressure Gauge 0 to 4000 kPa (0 to 580 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 | 6V-3965 | Quick Disconnect Coupler | 2 |
| 3J-1907 | O-Ring Seal | 2 | |
| Optional Tools | |||
|---|---|---|---|
| Item | Part Number | Description | Qty |
| D (1) | 198-4234 | Pressure Gauge Tool Gp | 1 |
| E | 198-4236 | Adapter Cable As | 2 |
| F | 198-4237 | Pressure Sensor Gp 0 to 3500 kPa (0 to 500 psi) |
2 |
| ( 1 ) | Tool (D), Tool (E), and Tool (F) are part of the 198-4240 Digital Pressure Indicator Gp. These tools can be used in place of the tools that are in Table 1. |
- Drive the machine to a smooth, horizontal surface.
- Move propel lever (1) to the NEUTRAL position.
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| Illustration 1 | g01529077 |
- Rotate propel speed dial (2) to the MINIMUM position.
- Move parking brake switch (3) to the ON position.
- Move right hopper switch (4) to the RAISE position. Release the switch when the hopper cylinder is completely retracted.
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| Illustration 2 | g01529078 |
- Move screed lift switch (5) to the FLOAT position. Allow the screed to rest on the ground.
- Move screed lift switch (5) to the HOLD position.
- Move throttle control switch (6) to the LOW IDLE position. Hold the switch in this position for less than 1 second.
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| Illustration 3 | g01529079 |
- After the engine reaches low idle, move engine start switch (7) to the OFF position.
- Engage lock pin (8) for the hopper on the right side of the machine.
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| Illustration 4 | g01529084 |
- Open pump compartment (9). This compartment is on the right side of the machine.
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| Illustration 5 | g01529085 |
- Assemble Tool (A) and assemble Tool (B) .
- Connect Tool (A) to Tool (B) .
- Remove the plug from port "M4" (10). Install one Tool (C) in port "M4". Tighten Tool (C) to a torque of 40 N·m (30 lb ft).
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| Illustration 6 | g01529087 |
- Remove the plug from port "M5" (11). Install second Tool (C) in port "M5". Tighten Tool (C) to a torque of 40 N·m (30 lb ft).
- Connect one Tool (B) to Tool (C) in port "M4" (10). Connect second Tool (B) to Tool (C) in port "M5" (11) .
- Disconnect reverse EDC (12) at the connector. Mark the connector for identification.
Note: The A332-YL wire and the H861-PU wire are connected to the reverse EDC connector for the left propel pump. Disconnection of the EDC connector will cause a fault to appear in the monitoring system when the machine is started. After this procedure is completed, the fault will no longer be active.
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| Illustration 7 | g01529088 |
- Disconnect forward EDC (13) at the connector. Mark the connector for identification.
Note: The 335-BR wire and the H861-PU wire are connected to the forward EDC connector for the left propel pump. Disconnection of the EDC connector will cause a fault to appear in the monitoring system when the machine is started. After this procedure is completed, the fault will no longer be active.
- Move engine start switch (7) to the START position. Release the engine start switch when the engine starts.
- Operate the engine at low idle for a few minutes.
- Move throttle control switch (6) to the HIGH IDLE position. Hold the switch in this position for less than 1 second. The engine speed should increase to 2200 rpm.
- Monitor the hydraulic oil temperature on the monitor. Operate the machine until the oil temperature reaches 43 ± 5.6 °C (110 ± 10 °F).
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| Illustration 8 | g01529089 |
- Read the pressure on the gauge in port "M4" (10). Read the pressure on the gauge in port "M5" (11). The pressure should be equal. If the pressure is equal, go to Step 27. If the pressure is not equal, go to Step 24.
- Loosen locknut (14) on the adjustment mechanism for the pump. Turn adjustment screw (15) until the pressure at port "M4" (10) starts to increase over the pressure at port "M5" (11). Note the angular position of the wrench.
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| Illustration 9 | g01529090 |
Note: Do not adjust the pressure beyond the rating of the gauges during the next two steps.
- Rotate adjustment screw (15) in the opposite direction until the pressure at port "M5" (11) starts to increase over the pressure at port "M4" (10). Note the angular position of the wrench.
- Rotate adjustment screw (15) to the center of the two positions which were noted in Step 24 and Step 25. Hold the adjustment screw in place, and tighten locknut (14) to a torque of 13.5 N·m (10 lb ft). Go back to Step 23.
- Move engine start switch (7) to the OFF position.
- Remove the tooling from port "M4" (10). Install the plug in port "M4". Tighten the plug to a torque of 40 N·m (30 lb ft).
- Remove the tooling from port "M5" (11). Install the plug in port "M5". Tighten the plug to a torque of 40 N·m (30 lb ft).
- Reconnect reverse EDC (12) .
- Reconnect forward EDC (13) .
- Close pump compartment (9) .
- If an adjustment was made, recalibrate the initial current setting to the electronic control module (ECM) for the pump. For the calibration procedure, refer to Testing and Adjusting, "Forward Currents - Calibrate" and Testing and Adjusting, "Reverse Currents - Calibrate" contained within this manual.
Right Propel Pump
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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. |
|
|
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. |
|
|
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 |
|---|
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 | 8T-0855 | Pressure Gauge 0 to 4000 kPa (0 to 580 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 | 6V-3965 | Quick Disconnect Coupler | 2 |
| 3J-1907 | O-Ring Seal | 2 | |
| D (1) | 8T-1712 | Coupling As | 1 |
| 6V-8967 | Hose 540 mm (21.25 inch) |
1 | |
| 8T-1710 | Permanent Coupling As | 1 | |
| E | 6V-9829 | Cap As | 1 |
| F | 6V-9508 | Plug | 1 |
| 6V-8397 | O-Ring Seal | 1 | |
| ( 1 ) | Machines that are equipped with a hydraulically driven generator will require the use of Tool (D). |
| Optional Tools | |||
|---|---|---|---|
| Item | Part Number | Description | Qty |
| G (1) | 198-4234 | Pressure Gauge Tool Gp | 1 |
| H | 198-4236 | Adapter Cable As | 2 |
| J | 198-4237 | Pressure Sensor Gp 0 to 3500 kPa (0 to 500 psi) |
2 |
| ( 1 ) | Tool (G), Tool (H), and Tool (J) are part of the 198-4240 Digital Pressure Indicator Gp. These tools can be used in place of the tools that are in Table 3. |
Note: The removal of the case drain line in this procedure will require a vacuum to be applied to the hydraulic tank in order to prevent a loss of oil from the system.
- Drive the machine to a smooth, horizontal surface.
- Move propel lever (1) to the NEUTRAL position.
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| Illustration 10 | g01529120 |
- Rotate propel speed dial (2) to the MINIMUM position.
- Move parking brake switch (3) to the ON position.
- Move screed lift switch (4) to the FLOAT position. Completely lower the screed.
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| Illustration 11 | g01529122 |
- Move screed lift switch (4) to the HOLD position.
- Move throttle control switch (5) to the LOW IDLE position. Hold the switch in this position for less than 1 second.
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| Illustration 12 | g01529123 |
- After the engine reaches low idle, move engine start switch (6) to the OFF position.
- Open pump compartment (7). This compartment is on the right side of the machine.
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| Illustration 13 | g01529124 |
- Remove three lower bolts (8) for the fender, three nuts, and six washers.
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| Illustration 14 | g01529125 |
- Remove three upper bolts (9) for the fender, three nuts, and six washers.
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| Illustration 15 | g01529128 |
- Remove fender (10). If the machine is equipped with a hydraulically driven generator, go to Step 13. If the machine is equipped with a belt driven generator, go to Step 17.
- Assemble Tool (D) .
- Disconnect case drain line (11) from the right propel pump and the generator pump.
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| Illustration 16 | g01529130 |
- Rotate elbow (13) on the generator pump so the elbow is pointing toward the outside of the machine.
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| Illustration 17 | g01529132 |
- Install Tool (D) in the case drain ports. Connect the 90 degree elbow of Tool (D) to the 90 degree elbow (12) on the right propel pump. Connect the straight fitting to the generator pump. Proceed to Step 17.
- Disconnect balance line (14). Use Tool (E) to cap the port. Use Tool (F) to plug the hose.
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| Illustration 18 | g01529133 |
- Remove the plug from port "M4" (16). Install Tool (C) in port "M4". Tighten Tool (C) to a torque of 40 N·m (30 lb ft).
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| Illustration 19 | g01529134 |
- Remove the plug from port "M5" (15). Install Tool (C) in port "M5". Tighten Tool (C) to a torque of 40 N·m (30 lb ft).
- Assemble Tool (A). Assemble Tool (B). Connect Tool (A) to Tool (B). Make two sets of tools.
- Connect one set of tools (17) to port "M4" (16). Connect one set of tools (18) to port "M5" (15) .
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| Illustration 20 | g01529135 |
- Disconnect reverse EDC (19). Mark the connector for identification.
Note: The A333-PK wire and the H861-PU wire are connected to the reverse EDC connector for the right propel pump. Disconnection of the EDC connector will cause a fault to appear in the monitoring system when the machine is started. After this procedure is completed, the fault will no longer be active.
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| Illustration 21 | g01529136 |
- Disconnect forward EDC (20). Mark the connector for identification.
Note: The 336-GY wire and the H861-PU wire are connected to the forward EDC connector for the right propel pump. Disconnection of the EDC connector will cause a fault to appear in the monitoring system when the machine is started. After this procedure is completed, the fault will no longer be active.
- Move engine start switch (6) to the ON position. Release the engine start switch when the engine starts.
- Operate the engine at low idle for a few minutes.
- Move throttle control switch (5) to the HIGH IDLE position. Hold the switch in this position for less than 1 second. The engine speed should increase to 2200 rpm.
- Monitor the hydraulic oil temperature on the monitor display. Operate the machine until the oil temperature reaches 43 ± 5.6 °C (110 ± 10 °F).
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| Illustration 22 | g01529137 |
- Read the pressure on the gauge in port "M4" (16). Read the pressure on the gauge in port "M5" (15). The pressure should be equal. If the pressure is equal, go to Step 32. If the pressure is not equal, go to Step 29.
- Loosen locknut (22) on the adjustment mechanism for the pump. Turn adjustment screw (23) until the pressure at port "M4" (20) starts to increase over the pressure at port "M5" (19). Note the angular position of the wrench.
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| Illustration 23 | g01529138 |
Note: Do not adjust the pressure beyond the rating of the gauges during the next two steps.
- Rotate adjustment screw (23) in the opposite direction until the pressure at port "M5" (15) starts to increase over the pressure at port "M4" (17). Note the angular position of the wrench.
- Rotate adjustment screw (21) to the center of the two positions which were noted in Step 29 and Step 30. Hold the adjustment screw in place, and tighten locknut (22) to a torque of 13.5 N·m (10 lb ft). Go back to Step 28.
- Move engine start switch (6) to the OFF position.
- Remove the tooling from port "M4" (16). Install the plug in port "M4". Tighten the plug to a torque of 40 N·m (30 lb ft).
- Remove the tooling from port "M5" (15). Install the plug in port "M5". Tighten the plug to a torque of 40 N·m (30 lb ft).
- Reconnect reverse EDC (19). Reconnect forward EDC (20) .
- If the machine is equipped with a hydraulically driven generator, remove Tool (D) from the case drain ports. Install the case drain hose.
- Remove Tool (E) and Tool (F). Connect balance line (14) .
- Replace fender (10) .
- Install bolts (9), nuts, and washers.
- Install bolts (8), nuts, and washers.
- Close pump compartment (7) .
- If an adjustment was made, recalibrate the initial current setting to the electronic control module (ECM) for the pump. For the calibration procedure, refer to Testing and Adjusting, "Forward Currents - Calibrate" and Testing and Adjusting, "Reverse Currents - Calibrate" contained within this manual.