SkyTrak 8042 Service Manual - Manual (Page 816)

9.225 Model 8042, 10042, 10054 Legacy Rev. 10/03
Electrical System
c. Hydraulic Oil Temperature Switch Cleaning and
Drying
DO NOT submerge the hydraulic oil temperature switch.
Clean only with an approved solvent and dry with a clean,
lint-free cloth.
d. Hydraulic Oil Temperature Switch Inspection and
Replacement
Inspect switch wiring for continuity and shorting. Replace
a defective or faulty switch with a new switch.
e. Installation and Testing
1. Thread the switch (5) into its fitting (6) on the
hydraulic reservoir. Tighten securely.
2. Fill hydraulic oil reservoir with hydraulic oil.
3. Connect the switch wiring connector lead (4) to the
harness connector.
4. If the vehicle has one battery, connect the
negative (-) battery cable to the negative (-) battery
terminal (2).
If the vehicle has dual batteries, connect both
negative battery cables to both negative (-) battery
terminals (3).
5. Clear the area around the vehicle of personnel and
any obstructions to vehicle travel.
6. Start the engine, check for hydraulic fluid leaking at
the hydraulic oil temperature switch and allow the
hydraulic fluid to reach operating temperature. Cycle
the boom several times and check whether the
hydraulic oil temperature warning indicator
illuminates on the operator’s display panel.
9.14.4 Park Brake Switch
The park brake switch (7) is located on the dash to the left
of the steering column and is pressed or “snapped” into a
rectangular switch bezel. The park brake switch must be
ENGAGED to permit engine starting.
Note: The park brake may be used to stop in an
EMERGENCY situation; however, notify the operator to
use caution as the stop will be abrupt and the operator
and the load may be jolted forward unexpectedly.
The park brake switch is a two-position toggle switch; the
two positions are ENGAGED (8) and DISENGAGED (9).
The switch is marked with an engaged (10) and
disengaged (11) symbol. When engaged, the park brake
switch completes the park brake circuit.
The park brake solenoids on the secondary function
valve (12) are normally de-energized, allowing the park
brake to engage. When the park brake solenoids are
energized, the park brake is disengaged. The system is
designed so that, when electrical power is OFF, the park
brake is engaged. (Refer to Section 10.7, “Stabil-TRAK™
Electrical Circuit Operation and Troubleshooting (8042/
10042),” or Section 10.9, “Stabil-TRAK™ Boom Interlock
Electrical Circuit Operation and Troubleshooting
(10054, 13198-17984),” or Section 10.10, “Stabil-
TRAK™ Boom Interlock Electrical Circuit Operation and
Troubleshooting (10054, 17985-19987 and 0160002332
& After).”)
OH18502
7
P
P
OS1323 OS0121
8
9
10
11
MA8300
Front
12