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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. |
| Machine Test Parameters | ||
|---|---|---|
| Date | Product or Component SN | |
| Measurement Location | Measurement | Actual |
| Engine High Idle Test Speed | 2200 rpm | |
| Hydraulic oil temperature for test | |
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| Illustration 1 | g03480477 |
| Test Specifications | ||
|---|---|---|
| Date | Product or Component SN | |
| Location | Specification | Actual |
| Port "G1" tap (12) of the auxiliary valve. | |
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This procedure provides the method to measure the performance and calibrate the shift solenoid. Perform this procedure if the machine is shifting improperly.
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| Illustration 2 | g02571852 |
| Required Tools | ||||
|---|---|---|---|---|
| Tool | Item | Qty | Part No | Description |
| A | 198-4240 | Digital Pressure Indicator Gp | ||
| A1 | 1 | 198-4234 | Digital Indicator | |
| A2 | 2 | 198-4238 | Pressure Sensor Gp
(0 to 35000 kPa (0 to 5000 psi)) |
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| A3 | 2 | 198-4236 | Adapter Cable As | |
- Connect one Tool (A2) to each Tool (A3).
- Connect each Tool (A3) to Tool (A1).
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Table 4 Optional Tools(1) Tool Item Qty Part No Description B B1 2 8T-0861
Pressure Gauges
(0 to 40000 kPa (0 to 5800 psi))B2 2 6V-4144 Quick Connect Couplers C C1 2 177-7860 Hose As C2 2 6V-4142 Fittings C3 2 6V-4143 Quick Connect Couplers Show/hide table(1) The optional tools can be used to replace the digital pressure gauges in the required tool list. - Connect one Tool (B2) to each Tool (B1).
- Connect each Tool (C3) to each Tool (C1). Connect each Tool (C2) to each Tool (C1).
- Connect each Tool (C3) to each Tool (B2).
- Drive the machine to a smooth, horizontal surface.
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Illustration 3 g03667723 - Move propel lever (4) to the NEUTRAL position.
- Press parking brake switch (5) in order to change the status of the parking brake to "engaged". When the parking brake status is "engaged", LED (2) next to the parking brake switch will be illuminated.
- Use travel mode switch (3) to select the PAVE mode. When the travel mode switch is set to PAVE mode, an LED next to PAVE symbol (1) will be illuminated.
Note: The machine must be in PAVE mode in order to operate the screed lift system, hopper system, apron system and auger lift system.
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Illustration 4 g03667821 - Press screed float switch (7) to place the screed in the FLOAT position. When the screed is in the FLOAT position, an LED next to the screed float switch will illuminate. Allow the screed to lower to the ground.
- Press the down arrow on throttle control switch (8) once in order to operate the engine in low idle.
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Illustration 5 g03654811 - Shut off the engine. Either place machine power switch (9) in the OFF position or press and hold push to start switch (6) for 3 seconds. An LED next to the push to start switch will flash when the engine is in shutdown mode.
Note: The engine may run for several minutes when placed in the shutdown mode.
- If the engine was shut down using the push to start switch (6), move machine power switch (9) to the OFF position.
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Illustration 6 g03662559 - Unhook latch (10), open access door (11) on the left side of the machine.
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Illustration 7 g03480477 - Connect Tool (A2) to port "G1" tap (12) of the auxiliary valve.
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Illustration 8 g03668544 - Press screed halt switch (13) in order to place in the HALT position.
- Move machine power switch (9) to the ON position.
- Press push to start switch (6) for 2 seconds in order to start the engine. An LED next to the push to start switch will flash when the engine is in start mode. When the engine has started, the LED will remain illuminated.
Note: Only one attempt to start the engine is allowed per key cycle. A new key cycle will need to be done in order to restart the process.
- Operate the engine at low idle for a few minutes.
- Press the up arrow on throttle control switch (8) in order to place the engine in high idle. The engine speed should increase to 2200 rpm.
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Illustration 9 g03668549 - Monitor the hydraulic oil temperature on operator display (14). Operate the machine until the oil temperature reaches
43 ± 5.6 °C (110 ± 10 °F) . - Press the down arrow on throttle control switch (8) once in order to operate the engine in low idle. The engine speed should decrease to 1000 rpm.
- Monitor pressure at port "G1" tap (12) on Tool (A). The pressure should be
4830 ± 350 kPa (700 ± 50 psi) . - Shut off the engine. Either place machine power switch (9) in the OFF position or press and hold push to start switch (6) for 3 seconds. An LED next to the push to start switch will flash when the engine is in shutdown mode.
Note: The engine may run for several minutes when placed in the shutdown mode.
- If the engine was shut down using the push to start switch (6), move machine power switch (9) to the OFF position.
- If the pressure is within the specified range, go to Step 11. If the pressure is not within the specified range, go to "Adjustment Procedure".
- Remove the tooling. Close access door (11) and secure latch (10).
- Loosen lock nut (15) on the pressure reducing valve. In order to increase pressure, rotate adjustment screw (16) clockwise. In order to decrease pressure, rotate adjustment screw (16) counter clockwise.
- Hold adjustment screw (16) in place and tighten lock nut (15).
- Go to "Test Procedure" Step 1.
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| Illustration 10 | g03662567 |