PIPE ASSY 0933147 - Caterpillar

Specification
Table 1
"Relief Valve (Swing) - Test and Adjust"
Machine Settings Engine Speed
Engine speed dial "10"
AEC switch OFF
Item Specification Actual
Right Swing 31000 + 1000 - 1500 kPa (4500 + 145 - 218 psi)
Left Swing 31000 + 1000 - 1500 kPa (4500 + 145 - 218 psi) Required Tools
Illustration 1 g02571852
Tooling (A)
198-4240 Digital Pressure Indicator Gp
Table 2
Tool Item Qty Part Number Description
A 198-4240 Digital Pressure Indicator Gp
A1 1 198-4234 Indicator
A2 1 198-4239 Pressure Sensor 41,368 kPa (6,000 psi)
A3 1 198-4236 Extension Cable Machine Preparation
Position the machine on level ground.
Stop the engine.
Release the pressure in the hydraulic system. Refer to Testing and Adjusting, "Hydraulic System Pressure - Release".
Illustration 2 g01217778
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 41,368 kPa (6,000 psi) pressure sensor to pressure tap (2).
Illustration 3 g01632613
Pilot oil manifold
(4) Connector
(5) Swing brake solenoid valve
Disconnect connector (4) from swing brake solenoid valve (5).Test Procedure
Start the engine.
Place the machine controls at the following settings: engine speed dial "10" and AEC switch OFF.Reference: Refer to Testing and Adjusting, "Engine Performance - Test (Engine Speed)" for engine rpm settings.
Move the swing joystick slowly and ensure that the swing parking brake is operating properly.
Illustration 4 g01632614
Swing motor
(6) Adjustment plug
(7) Locknut
(8) Relief valve (right swing)
(9) Relief valve (left swing)
(10) Adjustment plug
(11) Locknut
Slowly move the swing joystick for a full SWING RIGHT operation and check the pressure for relief valve (8) at pressure tap (2).
Return the swing joystick to the NEUTRAL position.
The pressure setting of the swing relief valve is 31000 + 1000 - 1500 kPa (4500 + 145 - 218 psi). If the pressure reading at pressure tap (2) is not within the specification, adjust the swing relief valve.
To adjust the swing relief valve, loosen locknut (7). Turn adjustment plug (6) until the pressure gauge reading at pressure tap (2) is 31000 + 1000 - 1500 kPa (4500 + 145 - 218 psi).Note: Turning adjustment plug (6) clockwise increases the pressure. Turning adjustment plug (6) counterclockwise decreases the pressure.Note: Always make final pressure adjustments on pressure rise.
Tighten locknut (7) to a torque of 120 10 N