SkyTrak 8042 Service Manual - Manual (Page 200)

Electrical System
9-18 6036, 6042, 8042, 10042, 10054
5. Start the engine. Allow it to reach operating
temperature and observe the operator instrument
cluster for warning indication. If the switch is not
defective, the problem could be elsewhere; possibly
in a shorted wire, improper running engine, improper
or low coolant, obstructed or faulty radiator, coolant
pump, loose fan belt, defective instrument cluster,
etc.
6. Close and secure the rear door.
9.10.2 Hydraulic Oil Temperature Switch
The hydraulic oil temperature switch (9) is threaded into
a fitting at the lower inside wall of the hydraulic oil tank.
a. Hydraulic Oil Temperature Switch Removal
1. Park the machine on a firm, level surface, level the
machine, fully retract the boom, lower the boom,
place the transmission control lever in
(N) NEUTRAL, engage the park brake and shut the
engine OFF.
2. Place a Do Not Operate Tag on both the ignition key
switch and the steering wheel, stating that the
machine should not be operated.
3. Open the rear door. Allow the system fluids to cool.
4. Properly disconnect the battery.
5. Drain oil from the hydraulic tank reservoir into a
clean container for reuse.
6. Label and disconnect the temperature switch wiring
connector from the harness connector.
7. Unthread the switch from the hydraulic reservoir.
b. Disassembly
DO NOT disassemble the switch. The switch is not
serviceable. Replace switch if found to be defective.
c. Hydraulic Oil Temperature Switch Installation
1. Thread the switch into its fitting on the hydraulic
reservoir. Tighten securely.
2. Fill hydraulic oil reservoir with hydraulic oil.
3. Connect the switch wiring connector to the harness
connector.
4. Properly connect the battery.
5. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
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 display panel.
MA7671
9