LINES GP-CONNECTING 2452061 - Caterpillar

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Tooling (B)
Table 1
Required Tools
Tooling Item Part
Number Description Qty
A A1 8T-0860 Pressure Gauge
40000 kPa (5800 psi) 1
A2 6V-3989 Fitting 1
A3 6V-4143 Coupler 2
A4 177-7861 Hose As
41370 kPa (6000 psi) 1
B B1 198-4234 Digital Pressure Indicator 1
B2 198-4239 Pressure Sensor 41370 kPa (6000 psi) 1
B3 198-4236 Adapter Cable As 1 Machine Preparation
Move the machine to a smooth horizontal location.
Place the steering control lever in the NEUTRAL position.
Engage the parking brake.
Lower the attachments to the ground.
Stop the engine.
Turn the key to the ON position, but do not start the engine.
Verify that the implement lockout switch is in the UNLOCKED position.
Move the control levers through the full range of travel several times. This will relieve any pressure that may be present in the implement hydraulic system.
Make sure that the pressure in the entire hydraulic system has been released.
Turn the key to the OFF position.
Observe the state of the amber hazardous voltage present lamp. If the lamp is illuminated, do not perform any type of service on the machine. Wait until the lamp is not illuminated. Then, perform the lamp test in the next step.
While you observe the lamp, turn the disconnect switch to the OFF position. Then turn the disconnect switch to the ON position. Note: When the disconnect switch is cycled, the amber hazardous voltage present lamp will illuminate briefly. Then, the lamp will turn off. This indicates that the operation of the lamp is correct.
If an error message for the lamp circuit is displayed, or if the operation of the hazardous voltage present lamp does not appear to be correct, refer to the Troubleshooting, "General Information" section of the manual for information on troubleshooting the lamp circuit.
Once the hazardous voltage level has been verified to be below 50.0 VDC, the machine can be serviced. Proceed to the next step.
Locate the pressure test port on the accumulator manifold. The accumulator manifold is located on the front of the hydraulic tank on the left side of the tractor.
Illustration 3 g01946780
Open access doors (1) and (2).
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Attach tooling (A) or (B) to pressure port (S) on the accumulator manifold. Test Procedure (Charge Pressure)
Start the engine. Warm the hydraulic oil to a temperature of 65° 3°C (150° 5°F).
Operate the engine at HIGH IDLE.
Exercise the implement hydraulics. The charge pump pressure at port (S) should be 3050 100 kPa (440 15 psi).
If the pressure is within the specified limit, the test is complete. If the pressure is not within the specified limit, perform the adjustment procedure in "Adjustment Procedure (Charge Pressure)". Adjustment Procedure (Charge Pressure)
Perform the steps in the "Machine Preparation" and then continue to the following steps.
Illustration 5 g01947051
Illustration 6 g01947052
(3) Locknut for the charge pressure
(4) Adjuster for the charge pressure
Loosen locknut (3) while you hold adjustment screw (4) in place.
Turn adjustment screw (4) clockwise in order to increase the cutoff pressure. Turn adjustment screw (4) counterclockwise in order to decrease the cutoff pressure.
Repeat the steps in "Test Procedure