BUCKET & ADJUSTER GP 1976159 - Caterpillar

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
Tools Needed:
1U-5796 Pressure Differential Tool Gp
8T-0860 5800 psi Pressure Gauge
13mm wrench
6mm wrench
9U-7400 Multitach Tool Gp
9U-5140 Photo Pickup
6V-6560 O-Ring Seal Qty 2
8C-6864 Adapter Qty 2
164-5567 Quick Disconnect Coupler As Qty 2
8C-3451 Dust Cap Qty 2
Move the machine onto a smooth horizontal surface.
Lower all the implements on the machine.
Remove the floorplate in order to access the pump.
Connect the delta P gauge in order to measure the margin pressure. The margin pressure is the difference between the pump outlet pressure and the load sensing pressure. Ensure that the high side is connected to the pump outlet pressure. Ensure that the low side is connected to the load sensing. Refer to illustration 137 and illustration 138.
Connect the 5800psi pressure gauge to the pump outlet pressure of the differential pressure gauge.
Connect Electronic Technician (ET) to the diagnostic port. Display the engine configuration screen in ET. Make sure that the fan control is turned on in the configuration screen before you proceed with this procedure.
Engage the parking brake.
Start the engine and run the engine. Warm the hydraulic oil to a minimum operating temperature of 65° C (149° F).
Select the engine ECM. Select the diagnostic tab that is located in ET. Choose override parameters. Select the fan bypass override in order to change the fan pump pressure.Note: Do not leave the screen for the pressure override during the setting of the pressure compensator. Decreasing the override will increase the fan speed, and increasing the override will decrease the fan speed.
Set the engine to high idle. Use the override for the fan pump in ET in order to achieve a pump outlet pressure of approximately 10200 kPa (1500 psi).
Verify that the measurement for the mechanical pump outlet pressure and the measurement for the fan pressure in ET are relatively close. If the measurement is not close, then resolve before you continue. If the measurement is close, then use the measurement from ET. Use the measurement to monitor the pressure of the fan in the following steps.
Use the load sensing adjusting stud in order to set the margin pressure. Use the delta P gauge, in order to adjust to 2050 72 kPa (300 10 psi). To increase the margin pressure, turn the stud clockwise. To decrease the margin pressure, turn the stud counterclockwise. Refer