SkyTrak 8042 Service Manual - Manual (Page 508)

8.93 Model 8042, 10042, 10054 Legacy Rev. 10/03
Hydraulic System
c. Secondary Function Manifold Installation
1. Align the secondary function manifold with its
mounting holes on the frame.
2. Secure the secondary function manifold with two
carriage bolts and hex flange nuts. Torque fasteners
to specification. Refer to the fastener torque chart in
Section 2.3, “Torques.”
3. Before attaching the hoses, prime the secondary
function manifold by filling the hydraulic hose ports
with fresh, filtered hydraulic fluid from a clean
container.
4. Use new oiled o-rings as required. Reattach and
secure all diagnostic test nipples, hoses, clamps,
wiring, etc.
5. Check the routing of all hoses, wiring and tubing for
sharp bends or interference with any rotating
members, and install tie wraps and/or protective
conduit as required. Tighten all tube and hose
clamps.
6. Start the engine and run at approximately one-third to
one-half throttle for about one minute without moving
the vehicle or operating any hydraulic functions.
7. Inspect the secondary function manifold 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.
8. Wipe up any hydraulic fluid spillage in, on, near and
around the vehicle, work area and tools.
d. Secondary Function Manifold Test
Conduct a pressure check of the park brake and steering
hydraulic circuits. Refer to Section 8.7, “Hydraulic System
Testing.”
8.12.3 Service Brake Valve
The service brake valve (9) is secured with four
capscrews and lockwashers at the base of the steering
column support (10), concealed by the lower dash cover.
The service brakes themselves are part of the axles (the park
brake is part of the front axle only). Refer to Section 5, “Axles,
Drive Shafts, Wheels and Tires,” for further information.
a. Service Brake Valve Removal
1. Park the vehicle on a firm, level surface, fully retract
all hydraulic cylinders, ground the attachment (if
any), place the travel select lever in (N) NEUTRAL,
place the neutral lock lever in the (N) NEUTRAL
LOCK position, engage the park brake switch and
shut the engine OFF.
2. Place an Accident Prevention Tag on both the
ignition key switch and the steering wheel, stating
that the vehicle should not be operated. Refer to
Section 1.5, “Accident Prevention Tags.”
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.
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