Service Manual User Manual

Section 8A
8A-18
14. At the starter, label and disconnect the positive (+)
battery cable.
15. Label and disconnect the engine water temperature
switch lead (Fig. 8A–16), engine oil pressure switch
lead, and transmission temperature lead.
Figure 8A–16. Label and disconnect the engine water
temperature and oil pressure switch leads,
and the transmission temperature lead.
16. If removing the engine and transmission as a unit:
• Place a suitable container beneath the hydraulic
reservoir side of the radiator. Disconnect the
transmission cooler hoses at the radiator and cap
the connectors to help prevent excess fluid
drainage. Secure the hoses out of the way on top
of the engine.
• Move the container beneath the transmission.
Disconnect and cap the inlet and outlet hoses at
the main hydraulic pump. Disconnect the pump
inlet hose from the hydraulic reservoir and cover
the opening to help prevent debris, etc. from
entering the pump. Move the hoses out of the way
to allow engine and transmission removal.
• Label and disconnect all transmission wire leads.
• Mark the transmission and transmission driveshaft
flange yoke. Disconnect the transmission-to
transfer case driveshaft at the transmission flange
yoke. Secure the U-joints with tape. Lower the
driveshaft to the ground.
Note: The drive shaft assembly is a balanced assembly.
Mark the yoke and transmission so that these compo-
nents can be returned to their original positions when the
transmission is reinstalled. The yokes at each end of the
drive shaft must be in the same plane to help prevent
excessive vibration (Fig. 8A–26).
17. Working from beneath the vehicle, label and
disconnect all engine wire harness leads (refer to
Section 10 Electrical System
as required for detailed
views of harness leads). Remove plastic tie wraps as
required to allow access to the wiring harness and
wire leads.
18. Disconnect the engine wiring harness bulkhead
connector from the cab wiring harness bulkhead
connector along the vehicle frame.
19. Label and disconnect the wiring harness at the steer
select valve.
20. Label and disconnect the wiring connectors at the
auxiliary function valve solenoids (Fig. 8A–10 and
Fig. 8A–17), located near the battery. Move all wiring
out of the way to allow engine removal.
Figure 8A–17. Disconnect the wiring at the auxiliary
function valve solenoids.
21. Working from the side of the vehicle, disconnect the
fuel return line (Fig. 8A–18) at the fuel injector pump.
Figure 8A–18. Disconnect the fuel return line to
the fuel injector distributor.
22. Disconnect the fuel inlet line at the fuel lift pump (Fig.
8A–20).
MS1570
Engine water
temperature switch
Engine oil
pressure switch
Transmission
temperature
switch
T
P
B
P
B
G
MS1420
Auxiliary function valve
(also see Fig. 8A-10)
OS0731
Fuel injector distributor
Fuel return line
Model 3606 • Origin 10/99