Labrie EXPERT Maintenance Manual page 240

230 General Maintenance
31. Lightly lubricate the threads on the tie rods, and install the three washers and nuts on the tie rods.
Using a 3-step torque method, torque them to 195-239 in-lbs (22-27 Nm).
N : The LabriePlus part number 633B1816 valve work port relief adjustment screw seals are not
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included with the standard seal kit, and should only be resealed if leaking.
32. If resealing is necessary, lay the valve flat on the work bench with the ports facing upward, and,
using a small flat blade screw driver or o-ring pick, remove the port relief adjustment screw dust
caps.
33. Use the small snap ring pliers to remove the snap ring retaining the work port relief adjustment
screw.
34.
Using a 4 mm Hex key driver, turn the adjustment screw counter-clockwise, counting the
revolutions until the adjustment screw is removed.
Ensure the spring and needle under the adjustment screw stays in position when the adjustment
screw is removed.
35.
Remove and discard the old o-ring from the adjustment screw, lubricate the new o-ring with
petroleum jelly and install it onto the adjustment screw, ensuring that it is fully seated in the
groove.
36.
Coat the outside surface of the o-ring with petroleum jelly and reinstall the adjustment screw,
turning it the appropriate revolutions in accordance with the counted revolutions recorded
during removal.
37.
Clean and reinstall the snap-ring and dust cap.
If the dust cap is damaged or missing, install a new LabriePlus part number 155L6377 dust cap.
38. Repeat steps 32 through 37 on all leaking port relief adjustment screws.
Valve Installation, Adjustment and Testing
1.
Clean the valve mounting plate and install it to the valve assembly.
2.
Tighten the hardware securing the valve to the mounting plate to 24 ft-lbs (32.5Nm) and, using a
suitable lifting device, reinstall the valve assembly to the body.
3. Tighten the hardware securing the valve mounting plate to the body to 85 ft-lbs (115Nm).
4.
Install the hoses and harness connectors that were previously labeled to their respective fittings
and connectors.
5.
Install and tighten the hydraulic tank fill cap.
6. Attach a 0-4,000 PSI hydraulic gauge on the test port of the inlet cover.
7. Start the truck, and engage the pump.
8. Check and adjust all function pressure and cycle times (refer to "Hydraulic Pressures" on
page 288).
9.
Operate all functions until the hydraulic fluid is at operating temperature, and check for leaks.
10.
Add hydraulic fluid as required to the hydraulic tank.