Lull 944E-42, Service Manual

Page: 746 / 844

Electrical System
9.238 Model 644E-42/944E-42 Rev. 6/04
a. Engine Coolant Temperature Sender Removal
1. Unlock and open the engine cover (1).
2. If the vehicle has dual batteries, disconnect both
negative battery cables (3 and 4) from both
batteries.
To access the lower battery (5), loosen the knob (6)
far enough so that the lip (7) on the upper battery box
clears the knob. Lift up the upper battery box (8) and
swing it out, so that the box clears the hydraulic tank
support bracket, to gain access to the lower negative
battery cable (3). Disconnect the lower negative
battery cable.
3. Remove the nut (9) securing the ring terminal (10)
from the vehicle sensors harness to the engine
coolant temperature sender (11).
4. The sender (11) is threaded into the engine
block (12). Remove the sender.
b. Engine Coolant Temperature Sender
Disassembly
DO NOT disassemble the sender. Replace a defective or
faulty sender.
c. Engine Coolant 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 Temperature Sender Installation
and Testing
1. Thread the engine coolant temperature sender (11)
into the engine block (12).
2. Secure the ring terminal (10) from the vehicle
sensors harness to the engine coolant temperature
sender (11) with the nut (9) from the temperature
sender.
3. If the vehicle has dual batteries, connect both
negative battery cables (3 and 4) to both batteries.
Connect the lower negative battery cable (3) to the
negative (-) terminal on the lower battery (5). Swing
the upper battery box (8) in and make sure that the
lip (7) on the upper battery box slides below the
knob (6). Secure in place with the knob.
4. Lower and lock engine cover (1). To release and
lower the engine cover from the fully raised position,
4110390
1.
2.
OU0780
2
2
1
MU0650
3
4
5
8
7
6
MU4520
11
12
10
9