Terex PT-30, Service Manual

Page: 112 / 116

Compact Track Loader
17. Hydraulic Pressure Check & Adjustment
17-3
Figure 0-5
3. Unscrew and remove the charge pressure relief
valve locking screw. The valve piston and o-ring will
remain attached to the locking screw when the lock-
ing screw is removed.
Figure 0-6
4. Extract the spring, spring collar and shims from
the charge pressure relief valve cavity. The front and
rear charge pressure relief valves are identical.
5. Adjust the charge pressure by adding or remov-
ing shims. Contact Manufacturer.
6. Insert the spring, spring collar and shims in the
charge pressure relief valve cavity.
7. Install the charge pressure relief valve locking
screw (with valve piston and o-ring attached).
8. Repeat procedure on remaining charge pres-
sure relief valve. The charge pressure relief
valves must have the same number of shims.
9. Connect the hose coupling on the tandem pump
T-adapter.
10. Check the charge pressure.
11. Install the belly pan.
Drive-Pressure Relief Valve Adjustment
The service tools required for drive-pressure relief
valve adjustment are listed in Table 0-3. Use manu-
facturer-recommended tools whenever possible.
Table 0-3
Required Tools
Combination Wrench
Socket Wrench
Hot oil can cause personal injury. Make sure the
oil is cool before removing any components or lines.
Remove the oil filler cap only when the engine is
stopped and has been allowed to cool thoroughly.
Collect and contain liquids in a suitable contain-
er. Dispose of all liquids according to local regula-
tions and mandates.
Note : During disassembly, plug all hoses and tubes to
prevent fluid loss and contamination of the system fluids.
1. Remove the seat. Refer to Chapter 6. Seat Re-
moval .
2. Remove the fuel tank. Refer to Chapter 6. Fuel
tank Removal .
3. Remove belly pan.
Locking
Screw,
Valve Piston
and O-ring
Spring,
Spring
Collar and
Shims
Remove
Cap