PLATE 2Q7042 - Caterpillar

Adjust the Torque Limiter
Signal pressure tap (4) is located at hydraulic pump (1) . Access is gained from the bottom of the machine or by removing the floorplate.
Start the engine. Engage the parking brake.
Move the stick OUT. Lower all the work tools and the stabilizers to the ground.
Stop the engine. Move all the control levers to all positions. This releases system pressure.
A plate is located at the edge of each door in the cab. Remove the screws on the plates. Remove the plates. Remove the floor mat.
Remove the bolts that hold the floorplate in place. Remove the floorplate.
Install one 6V-4143 Coupler to each end of each 177-7860 Hose Assembly .
Install one 8T-0860 Pressure Gauge with a range of 0 to 40000 kPa (0 to 5800 psi) to one end of the 177-7860 Hose Assembly . Attach the second end of the hose assembly to signal pressure tap (4) .
Install one 8C-3417 Elbow into each port in 4C-9910 Flow Meter . Attach one 6V-8946 Reducer Assembly onto each 8C-3417 Elbow . Attach one 6V-8943 Reducer Assembly onto one of the 6V-8946 Reducer Assemblies .
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(5) Retainers
There are two retainers (5) on the boom. Remove the two bolts from each retainer. Remove the retainers.
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(6) Hose to the head end of the boom cylinder (7) Connector to the head end of the boom cylinder
Remove the hose (6) from the connector from the head end of the boom cylinder (7) . Install one 123-3893 Cap Assembly to connector (7) .
Install the hose to the head end of the boom cylinder (6) onto the 6V-8943 Reducer Assembly that was installed in Step 8.
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(8) Hose to the rod end of the boom cylinder (9) Tube to the rod end of the boom cylinder
Remove hose (8) from the tube to the rod end of the boom cylinder (9) . Install a 6V-9831 Cap Assembly to tube (9) .
Install the end of hose (8) onto the 6V-8946 Reducer Assembly that was installed in Step 8.
Start the engine. Cycle the work tools until the hydraulic oil temperature on the 4C-9910 Flow Meter rises to 60 °C (140 °F).
When the hydraulic oil temperature is at 60 °C (140 °F), increase the engine speed to 1800 rpm. Move the boom control lever to the boom RAISE position. Hold the boom control lever in the RAISE position. Flow will decrease as the temperature increases. Flow will decrease as rpm decreases.
Rotate the control knob for the pressure on the 4C-9910 Flow Meter until 16,000.0 kPa (2320 psi) is indicated on the pressure gauge. Record the flow, the temperature, the oil pressure and the rpm.Note: If the engine cannot maintain 1800 rpm, refer to the Systems Operation, Testing and Adjusting for your engine. Perform the torque converter stall test and check the high idle. The engine idle must be within the specification before continuing to the next procedure.
If the flow is not within the specification, then adjust the torque limiter. Lower all work tools to the ground.
When the pressure is