HOUSING-END 2L7289 - Caterpillar

Introduction
The 966M/972M XE quick coupler source of flow is the implement pump.This information includes the following test:
Quick Coupler PressureThis information includes the following adjustment procedure:
Adjustment Procedure (Quick Coupler)Required Tools
Illustration 1 g03630357
Tooling (A) 198-4240 Digital Pressure Indicator Gp
Table 3
Tool Item Qty Part No Description
A 198-4240 Digital Pressure Indicator Gp
A1 1 198-4234 Digital Indicator
A2 1 198-4237 Pressure Sensor Gp
(0 to 3,445 kPa (0 to 500 psi))
A2 1 198-4238(1) Pressure Sensor Gp
(0 to 34,450 kPa (0 to 5,000 psi))
A2 1 198-4239 Pressure Sensor Gp
(0 to 41,368 kPa (0 to 6,000 psi))
A2 1 251-9600(2) Pressure Sensor Gp
(0 to 68,900 kPa (0 to 10,000 psi))
A3 1 198-4236 Adapter Cable As
(1) This sensor must be purchased separately. The sensor is not included in the 198-4240 Digital Pressure Indicator Gp
(2) This sensor can only be used on large diameter pressure taps like 6V-3965 Fitting.Test Preparation
Refer to Testing and Adjusting, "Machine Preparation for Troubleshooting".Refer to Testing and Adjusting, "System Pressure Release".
Illustration 2 g03630356
Steering Frame Lock in the LOCKED Position
Move steering frame lock to the LOCKED position.
Turn off machine. Release system pressure to machine. Test Procedure
Illustration 3 g03643338
Location of quick coupler pressure tap. Located on the quick coupler valve on the inside left wall of the non-engine end frame.
(1) Quick coupler pressure tap.
Attach a 34450 kPa (5000 psi) gauge to the quick coupler pressure tap located on the quick coupler valve on the inside left wall of the non-engine end frame as shown in Illustration 3.
Start the engine and warm up the hydraulics if necessary. The hydraulic oil temperature should be at least 60° C (140° F).
This pressure can be taken at high Idle or low idle, there should be no difference in pressure.
Illustration 4 g03691804
Quick coupler switch located on the right side control panel.
(2) Quick coupler switch
Actuate the quick coupler using the coupler switch (2) located to the right of the operator inside the cab. The quick coupler will then attempt to actuate for a few seconds. Do not actuate any other function while checking the quick coupler. While the quick coupler is being actuated, check the quick coupler pressure.
The pressure should be 15500 700 kPa (2248 100 psi).
The quick coupler should extend in 2.4 seconds and retract in 1.5 seconds at 15° C (60° F)
If pressure is within specifications, shut off the machine and remove gauges. See next section if adjustment is needed. Adjustment Procedure
Illustration 5 g03637916
Quick coupler valve located on the inside left wall of the non-engine end frame.
(3) Quick coupler pressure reducing valve
(4) Locknut
Locate the Quick coupler pressure reducing valve PRV located on the inside left wall of the non-engine end frame as shown in Illustration 5.
Use a hex wrench to loosen