SkyTrak 8042 Service Manual - Manual (Page 522)

8.107 Model 8042, 10042, 10054 Legacy Rev. 10/03
Hydraulic System
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. Outrigger Shuttle Valve Test
Raise and lower the outriggers to check the outrigger
hydraulic circuit for proper function.
8.12.9 Extend Lockout Valve (10054)
Model 10054 has an extend lockout valve (12) which
prevents the boom from being extended beyond 42 feet
unless the outriggers are lowered onto firm terrain. Once
the outriggers are lowered, pressure switches located on
each outrigger cylinder close and energize the solenoid
on the boom extend lockout valve. The boom can then be
fully extended.
a. Extend Lockout Valve Removal
1. Park the vehicle on a firm, level surface, fully retract
the boom, raise the boom, 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.”
3. Temporarily block up or support the raised boom.
4. Unlock and open the rear door. Allow the hydraulic
fluid to cool.
5. Remove the transmission covers.
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.
MH3750
Front
~
12
WARNING:
DO NOT get under a raised
boom unless the boom is blocked up. Always
block the boom before doing any servicing that
requires the boom to be up. Unexpected lowering
of the boom may cause death or serious injury.
WARNING:
Hot hydraulic fluid can
cause severe burns. Wait for hydraulic fluid to
cool before servicing any hydraulic component.
WARNING:
Escaping hydraulic fluid
under pressure can penetrate the skin, causing
death or serious injury. Relieve hydraulic
pressure before servicing any hydraulic
component.