BRACKET AS 2767334 - Caterpillar

Illustration 1 g01428847
Pump compartment
(1) Pressure tap (delivery pressure for drive pump)
(2) Pressure tap (delivery pressure for idler pump)
(3) Pressure tap (power shift pressure)
Connect a 60000 kPa (8700 psi) pressure gauge to pressure tap (1).
Connect a 60000 kPa (8700 psi) pressure gauge to pressure tap (2).
Connect a 6000 kPa (870 psi) pressure gauge to pressure tap (3). This gauge is used to monitor power shift pressure.
Start the engine.
Place the machine controls at the following settings: engine speed dial 10 and AEC switch OFF. Refer to Testing and Adjusting, "Engine Performance - Test (Engine Speed)" for engine rpm settings.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
Start Service Mode and input a fixed power shift pressure of 2900 kPa (420 psi). Reference: Refer to Testing and Adjusting, "Relief Valve (Line) - Test and Adjust".
Move the joystick for the stick to the full STICK OUT position. Hold the joystick for the stick in this position and check the pressure gauge reading at pressure tap (1) or (2).
Return the joystick for the stick to the NEUTRAL position. Note: The stick lowering control valve is located on the stick cylinder.
Illustration 2 g01447481
Cutaway view of stick lowering control valve
(4) Relief valve
(5) Locknut
(6) Adjustment screw
The pressure gauge reading should be 37500 +1000 -2000 kPa (5439 +145 -290 psi). If the pressure gauge reading at pressure tap (1) or (2) is not within the specification, adjust line relief valve (4) that is on the stick lowering control valve.
Move the joystick for the stick to the full STICK OUT position. Hold the joystick for the stick in this position and check the pressure gauge reading at pressure tap (1) or (2).
In order to adjust line relief valve (4), loosen locknut (5) and turn adjustment screw (6) until the pressure gauge reading at pressure tap (1) or (2) is 37500 +1000 -2000 kPa (5439 +145 -290 psi). Note: Turn the adjustment screw clockwise in order to increase the pressure. Turn the adjustment screw counterclockwise in order to decrease the pressure.Note: Always make final pressure adjustment on pressure rise.
Tighten locknut (5) to a torque of 50 7 N m (37 5 lb ft).