Lull 944E-42 Service Manual User Manual download pdf (Page 746)

100

101

Electrical System

9.236

Model 644E-42/944E-42 Rev. 6/04

b. Engine Oil Pressure Switch Disassembly

DO NOT disassemble the switch. Replace a defective or

faulty switch.

c. Engine Oil Pressure Switch Inspection and

Replacement

Inspect the switch and the wiring harness connector

terminals for continuity. Replace a defective or faulty

switch with a new part.

d. Engine Oil Pressure Switch Installation and

Testing

1. Thread the switch (3) into the engine block. Connect

the wire harness connector (2) to the engine low oil

pressure switch connector (1).

2. If the vehicle has dual batteries, connect both

negative battery cables (4 and 5) to both batteries.

Connect the lower negative battery cable (4) to the

negative (-) terminal on the lower battery (6). Swing

the upper battery box (7) in and make sure that the

lip (8) on the upper battery box slides below the

knob (9). Secure in place with the knob.

3. Lower and lock engine cover (10). To release and

lower the engine cover from the fully raised position,

lift up slightly on the cover and push the upper part

of the right gas shock (11) (orange tab) to the left.

Line up the upper part of the shock lock tube with the

lower part of the gas shock and pull the cover down

to the closed position.

4. Clear the area around the vehicle of personnel and

any obstructions to vehicle travel.

5. Start the engine, allow it to reach operating

temperature, and observe the front dash panel for

switch indication. If the switch is not defective, the

problem could be elsewhere; possibly in a shorted

wire, improper-running engine, defective display, etc.

MU4500

MU0650

4110390

OU0780

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