SkyTrak 8042 Service Manual - Manual (Page 513)

Hydraulic System
8.98 Model 8042, 10042, 10054 Legacy Rev. 10/03
c. Shuttle Valve Installation
Note: ALWAYS replace seals, o-rings, gaskets, etc.,
with new parts to help ensure proper sealing and
operation. Lubricate seals and o-rings with clean
hydraulic oil.
1. Reattach and secure hoses, fittings, etc. Attach the
shuttle IN steering valve line at port P1 (2) and the
shuttle-in main control valve line at port P2 (3), and
the load sense brake valve line at port P3 (4) of the
shuttle valve (1).
2. Check the routing of all hoses, wiring, etc., for sharp
bends or interference with any rotating members,
and install tie wraps and/or protective conduit as
required. Tighten all fittings.
3. Reinstall the display panel. Refer to Section 4.5,
“Cab Removal,” for information on installing the dash
panel.
4. Start the engine and run at approximately 1/3-1/2
throttle for about one minute, without moving the
vehicle or operating any hydraulic functions.
5. 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.
6. Wipe up any hydraulic fluid spillage in, on, near and
around the vehicle, work area and tools.
d. Shuttle Valve Test
Conduct a pressure check of the service brake and
steering hydraulic circuits. Refer to Section 8.7,
“Hydraulic System Testing.”
8.12.5 Power Steering Valve
The power steering valve (5) is located at the base of the
steering wheel shaft, concealed by the lower dash cover.
The valve is not serviceable and must be replaced in its
entirety if defective.
WARNING:
Avoid prolonged engine
operation in closed areas with inadequate
ventilation. Failure to properly ventilate exhaust
fumes can result in death or serious injury.
WARNING:
Hydraulic oil leaking under
pressure can penetrate the skin and cause
severe personal injury. DO NOT use your hand
or any part of your body to check for hydraulic
leaks. When checking for hydraulic leaks, wear
safety glasses and gloves to help provide
protection from spraying hydraulic oil. Use a
piece of cardboard or paper to search for leaks.
P2
P1
P3
MT2170
1
2
3
4
MA7360
5