ADAPTER-PIPE 0045703 - Caterpillar

Table 1
Required Tools    
Part Number    Part Description    Qty    
8T-0861     Pressure Gauge     1    
6V-3989     Unvalved Nipple     1    
6V-4143     Coupler Assembly     2    
6V-3014     Hose     1    
Illustration 1 g01048023
(1) Main pump pressure (drive pump) (2) Main pump pressure (idler pump)
Illustration 2 g01046508
Main control valve (3) Load sensing signal limiter valve
Connect a 60000 kPa (8600 psi) pressure gauge to pressure tap (1) .
Start the engine. Place the engine speed dial in position 10.
Loosen the locknut on main relief valve (3) .
To avoid damage to the hydraulic components, do not turn the main relief valve adjustment screw into the stop.
Turn the adjustment screw inward by one half turn.Note: Do not overtighten the adjustment screw.Test and Adjust
Ensure that no brakes are applied. Lower the armrest and place the parking brake switch in the OFF position.
Chock the wheels.
Move the gear switch to the SECOND GEAR position.
Completely depress the service brake pedal.Note: Do not lock the brake pedal.
Slowly depress the travel pedal in the forward direction.
Check the pressure at pressure tap (1). Refer to Testing and Adjusting, "Specifications" in this manual for the correct travel system pressure.
Slowly depress the travel pedal in the reverse direction.
Check the pressure at pressure tap (1). Refer to Testing and Adjusting, "Specifications" in this manual for the correct travel system pressure.
Illustration 3 g00920351
Travel motor (4) Line relief valve (travel)
To prevent injury or death, never work under a machine while a test is being performed.
If the line relief valves of the travel motor are not set to the proper specification, adjust the appropriate relief valve at the travel motor.
Loosen the locknut of line relief valve (4) .
Turn the adjustment screw until the pressure at pressure tap (1) is set to the proper specification.
Tighten the locknut for line relief valve (4) to the specified torque.Note: After checking the line relief valve pressure settings, return the main relief valve and the load sensing signal limiter valve to the original settings. Refer to Testing and Adjusting, "Relief Valve (Main) - Test and Adjust" and Testing and Adjusting, "Relief Valve (Signal Limiter) - Test and Adjust".