Hydraulic Section
8-42
31211015 6036, 6042, 8042, 10042, 10054
f. Main Control Valve Installation
1. Install the main control valve onto the frame, aligning
the bolts with the holes in the end sections of the main
control valve. Slide the main control valve into position,
and tighten the bolts. Torque as required.
2. Prime the main control valve by filling the inlet
openings with fresh, filtered hydraulic oil from a clean
container, before attaching the hoses.
3. Use new oiled o-rings as required. Uncap and connect
all previously labeled hoses, clamps, etc. to the main
control valve.
4. Connect the control cables to the main control valve:
a. Install the two bolts (3), and secure the bracket/
control cable to the main control valve.
b. Connect the end of the cable to the shaft from the
control valve. Secure with the pin and clip (2).
c. If required, adjust the jam nuts (4)until the distance
from the outer jam nut to the end of the ferrule is
the same as recorded during removal. Tighten the
jam nuts.
d. Repeat steps for remaining control cables.
5. Check routing of all hoses, wiring and tubing for sharp
bends or interference with any rotating members, and
install the tie wraps and/or the protective conduit as
required. Tighten all the tube and hose clamps.
6. Fill the hydraulic fluid reservoir. Refer to Section 8.6.2,
“Hydraulic Oil Reservoir Filling”.
7. Start engine and run at approximately one-third to one-
half throttle for about one minute without moving the
machine or operating any hydraulic functions.
8. Inspect for leaks and check the level of the hydraulic
fluid in the reservoir. Shut the engine OFF.
Note: Check for leaks and repair as required before continuing.
Add hydraulic fluid to the reservoir as needed.
9. Wipe up any hydraulic fluid spillage in, on, near and
around the machine, work area and tools.
10. Install the transmission covers.
11. Close and secure the engine cover.
g. Main Control Valve Test
Conduct a pressure check of the hydraulic system in its
entirety. Adjust pressure(s) as required. Refer to Section 8.5.1,
“Pressure Checks and Adjustments”.
Note: DO NOT loosen, disassemble or attempt to adjust any of
pressure valves unless specifically instructed by manufacturer
to do so. Tampering with a pressure valve will irrevocably alter
pressure in the affected circuits.
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