SkyTrak 8042 Service Manual - Manual (Page 518)

8.103 Model 8042, 10042, 10054 Legacy Rev. 10/03
Hydraulic System
The outrigger valve (6) contains two solenoid valve
assemblies (7) that direct the flow of hydraulic fluid
according to position of the outrigger switches.
Verify the correct operation of the outrigger valve
solenoids before considering replacement of the valve.
Refer to Section 9.7, “Electrical System
Troubleshooting.”
a. Outrigger 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.
6. Label or otherwise mark the hydraulic hoses (8) in
relation to the outrigger valve (9). Disconnect and
cap all hoses, fittings, solenoid wire terminal leads,
etc.
7. Remove the two hex flange nuts (10) and two
carriage bolts (11) securing the outrigger valve (9) to
the frame.
8. Remove the outrigger valve (9) from the vehicle.
Wipe up any hydraulic fluid spillage in, on, near and
around the vehicle.
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.
P
S
T
MH3910
~
~
6
7
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.
MH3760
~
8
9
10
11
8