SECTION 01: ENGINE
PA1553
23
21. Disconnect the oil delivery hose from the
valve located at the reserve tank drain
(7, Fig. 17).
22. Disconnect the block heater connector from
the power steering pump if applicable.
23. Close engine fuel supply shutoff valve on
primary fuel filter. Disconnect the fuel line
connected to inlet port. On vehicles equipped
with the optional water-separator-fuel-filter,
disconnect the connector and remove cable
ties from cradle.
24. Disconnect the air compressor discharge,
governor steel-braided airlines and manual
filling airlines from compressor. Remove
retaining clips.
25. Disconnect the hose connecting the
compressor head to the sump tank.
26. Disconnect ground cables from rear
subframe ground-stud located close to the
starter motor.
27. Disconnect positive cable (red terminal) from
starting motor solenoid.
28. Disconnect the power plant wiring-harness
main connectors from ECM and remove
retaining clips from engine compartment
backwall.
29. On vehicles equipped with an automatic
transmission provided with a hydraulic output
retarder, disconnect steel-braided airline
from pressure regulator output. The pressure
regulator is mounted above the rear junction
box and is accessible through the engine
compartment R.H. side door.
30. Disconnect fuel return line from bulkhead
fixed on engine cylinder head end.
31. On vehicles equipped with an electrically
operated cold-starting aid, disconnect the
delivery hose from the starting-aid cylinder
solenoid valve. Remove cable ties securing
hoses.
32. Disconnect turbo boost pressure gauge
airline from engine air intake.
33. Disconnect connectors from transmission.
On the left side: four on rear side with one
close to yoke. On right side: close to the
solenoid valve of the output retarder.
34. From under the vehicle, disconnect the
propeller shaft as detailed in Section 09,
under heading "Propeller Shaft Removal".
35. Inspect the power plant assembly to ensure
that nothing will interfere when sliding out the
cradle. Check for connections or hoses not
mentioned in this list as some vehicles are
equipped with special or aftermarket
components.
36. Remove the six retaining bolts, washers and
nuts securing the power plant cradle to the
vehicle rear subframe (Fig. 18).
NOTE
Check if any spacer(s) have been installed
between power plant cradle and vehicle rear
subframe, and if so, note position of each
washer for reinstallation purposes.
37. Using a forklift, with a minimum capacity of
4,000 lbs (1 800 kg), slightly raise the power
plant cradle.
CAUTION
Due to the minimum clearance between the
power plant equipment and the top of the
engine compartment, extreme care should be
used to raise the power plant cradle, just
enough to free the cradle. Clearance between
power plant cradle and mounting rail should
range between ¼" and ½" (6-12 mm).
38. Pull engine out slowly from the engine
compartment. Make sure all lines, wiring and
accessories are disconnected and are not
tangled.
9. POWER PLANT ASSY. INSTALLATION
To install a power plant assembly, follow the
same procedure as in "Power Plant Assembly
Removal" except in reverse order, then proceed
with the following:
1. Torque the power plant cradle mounting
bolts to 190 lbf-ft (255 Nm).
2. If fan drive has been removed, reinstall and
align as per Section 05, COOLING
SYSTEM, under "FAN DRIVE
ALIGNMENT".
3. Refill cooling system with saved fluid (refer
to Section 05, COOLANT SYSTEM).
4. Once engine fuel system has been drained,
it will aid restarting if fuel filters are filled with
fuel oil (refer to Section 03, FUEL SYSTEM).
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