WHEEL CYL 0935745 - Caterpillar

Disconnect makeup line (4) from connector (2) at swing motor (1).
Assemble and install seals (30), tee (3), swivel elbow (40) and coupling (37) to connector (2) at swing motor (1).
Install seal (30) and makeup line (4) to tee (3).
Connect portable hydraulic tester (10) and the test hoses between nipple assembly (36) at idler pump (24) and coupling (37) at the swing motor.
Connect 60000 kPa (8700 psi) pressure gauge (9) to pressure tap (8) for delivery pressure for the idler pump.
Install multitach group (22) on engine (21). This tool is used to monitor engine speed.
Illustration 9 g01590313
Tool setup
(6) Negative flow control line (drive pump)
(7) 6V-9508 Face Seal Plug
(13) Negative flow control line (idler pump)
(14) Pressure tap (power shift pressure)
(15) 8T-8902 Tee
(18) 177-7860 Hose Assembly
(19) Idler pump regulator
(20) 8T-0855 Pressure Gauge
(23) Drive pump
(24) Idler pump
(25) 6V-8397 O-Ring Seal
(27) 6V-9829 Cap
(28) 3J-1907 O-Ring Seal
(41) 6V-3965 Fitting
(43) 6V-4143 Coupler
(44) Test hose
(45) 6V-3989 Fitting
Disconnect negative flow control line (13) from idler pump (24). Install seal (25) and plug (7) to the end of negative flow control line (13).
Connect two tees (15) to the elbow at the negative flow signal pressure port of idler pump (24). Install cap (27) to tee (15).
Remove 311-1362 Vacuum Cap and install the filler plug for the hydraulic tank.
Connect one end of test hose (18) to tee (15).
Connect the other end of test hose (18) to pressure tap (14) for the power shift pressure.
Connect one end of test hose (44) to tee (15).
Connect 6000 kPa (870 psi) pressure gauge (20) to the other end of test hose (44).Test Procedure
Note: Perform each test for the drive pump and the test for the idler pump one at a time.
To prevent personal injury or equipment damage from failure of the hydraulic test equipment or associated circuit components because of blocked pump flow, make sure that the test equipment valves are fully open before starting the engine.
To prevent personal injury and/or equipment damage from failed lines or components while the hydraulic test equipment is returned to the open flow position, slowly open the hydraulic test equipment valve while monitoring the pump flow.If pump flow does not increase as the valve is opened, shut the engine off and determine what is preventing the pump from upstroking.
Start the engine.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
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.
Illustration 10 g03748175
Monitor
(A) Display
(B) Keypad
(C) Menu Key
(D) Rotate meter display key
Start "SERVICE MODE" and override the engine speed to 1700 rpm.
Press Menu key (C).
Press the Down key to highlight "SERVICE" menu option.
Press the OK key.
Illustration 11 g03748181
Password entry screen
(E) Back key
(F) Left arrow key
(G) Right arrow key
(H) Enter key
(J) OK key
After OK key (J) is pressed, the "PASSWORD ENTRY" screen will be displayed. Refer to Illustration 11. The password for the service menu is "9992". The keys for