SkyTrak 8042 Service Manual - Manual (Page 830)

9.239 Model 8042, 10042, 10054 Legacy Rev. 10/03
Electrical System
9.14.12 Engine Coolant High Temperature
Sender
The engine coolant high temperature sender (6) is
threaded into the engine block (7) and is connected to the
operator’s instrument cluster via the engine wiring
harness, bulkhead connector and cab wiring harness.
When the engine coolant temperature exceeds normal
operating limits and rises above 210° F (99° C), the
contacts close within the sending unit. The operator’s
instrument cluster indicator (9) illuminates.
When the engine coolant temperature is below 210° F
(99° C), the contacts within the sending unit open and the
instrument cluster indicator turns OFF. (Refer to Section
9.8.31, “Engine Coolant Temperature Warning Indicator
Troubleshooting.”)
a. Engine Coolant High Temperature Sender Removal
1. If the vehicle has one battery, disconnect the
negative (-) battery cable at the negative (-) battery
terminal (4).
If the vehicle has dual batteries, disconnect both
negative battery cables from both negative (-) battery
terminals (5).
2. Unplug the engine coolant high temperature sender
connector (8) from the wiring harness connector.
3. The sender (6) is threaded into the engine block (7).
Remove the sender.
b. Engine Coolant High Temperature Sender
Disassembly
DO NOT disassemble the sender. Replace a defective or
faulty sender.
c. Engine Coolant High Temperature Sender
Inspection and Replacement
Inspect the sender and the wiring harness connector
terminals for continuity. Replace a defective or faulty
sender with a new part.
d. Engine Coolant High Temperature Sender
Installation and Testing
1. Thread the engine coolant high temperature
sender (6) into the engine block (7) snugly, then
connect the sender connector (8) to the wiring harness
connector.
MA9010
6
7
8
(SN 8042-13198 through 18990,
10042-13198 through 19030,
10054-13198 through 19079)
6
7 8
MH5240
(SN 8042, 18991 - 19987,
10042 19031 - 19987,
10054, 19080 - 19987 And
8042/10042/10054,
0160002332 & After
0000 00
P
MA7570
9