COVER 7S9322 - Caterpillar

Table 1
Required Tools    
Tool     Part Number     Part Description     Quantity    
A     8T-0857     Pressure Gauge     1    
Personal injury or death can result from the machine slowly propeling forward during the pressure test procedure. Be sure that all personnel are clear of the machine during the pressure test.
Illustration 1 g00594382
Hydraulic Pump Compartment (1) Pressure gauge (2) Control manifold
Attach 8T-0857 Pressure Gauge to the quick disconnect plug on control manifold (2) .
Use gauge (1) in order to perform the following test.
Start the engine and run the engine at high RPM.
Place the travel/pave/maneuver speed control in the PAVE position. Turn the maximum propel speed potentiometer to one half. Release the parking brake. Slowly move the propel lever in the forward direction.
Observe the pressure reading on gauge (1) that is mounted on control manifold (2). The gauge reading should be 3450 175 kPa (500 25 psi). Place the propel in the NEUTRAL position. Place the throttle control in the low position. Stop the engine. If the gauge reading is correct, proceed to Step 9.
If the gauge reading is not within the specified range, the pressure reducing valve needs to be adjusted.
Illustration 2 g00594383
Hydraulic Tank Compartment (3) Cap for adjusting knob (4) Pressure reducing valve
Locate the pressure reducing valve (4) under the floorplate. The pressure reducing valve is just above the hydraulic tank.
Remove the cap for adjusting knob (3). Turn the adjusting knob in order to adjust the pressure. Repeat Step 2 through Step 5 in order to check pressure until the correct pressure is achieved.
When pressure is properly set, replace the cap for adjusting knob (3). Remove gauge (1) on control manifold (2) .