SECTION 01: ENGINE
12
DOB 2490-2789 | X3-45 Commuter PA1605 Maintenance Manual (Final Version – Rev.2 April 2016)
Remove the power plant assembly as follows:
CAUTION
Tag hoses and cables for identification before
disconnecting in order to facilitate reinstallation.
Plug all openings to prevent dirt from entering
the system.
NOTE
No parts within the EECU are serviceable. If
found defective, replace the EECU as a unit.
First
1. Shut off the heater line shut-off valves.
2. Disconnect the battery or batteries from
the starting system by removing one or
both of the battery cables from each
battery system. With the electrical circuit
disrupted, accidental contact with the
starter button will not produce an engine
start.
WARNING
Due to the heavy load of the rear bumper
assembly, it must be adequately supported
before attempting to remove it.
3. Remove the rear bumper assembly
complete with hitch if applicable from the
vehicle. Refer to Section 18, BODY, under
"REAR BUMPER REMOVAL".
4. Using the quick-connect drain hose, drain
the engine cooling system. Refer to
Section 05, COOLING under "DRAINING
COOLING SYSTEM".
5. If applicable, disconnect the block heater
connector located near the EGR mixing
chamber.
With Vehicle Raised
1. Using a vehicle lift or jack, raise vehicle to
access transmission fasteners and wire
harness.
2. Disconnect propeller shaft.
3. Partially remove L.H. side transmission
protective panel to access connectors.
4. 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 in the upper
section of engine compartment backwall
and is accessible through the engine
compartment R.H. side door.
5. Untighten bolts A and C. Remove bolts B
and D and pivot oil cooler towards
transmission. Reinstall bolts B and D.
FIGURE 9: COOLER POSITION DURING ENGINE
CRADLE INSERTION OR REMOVAL
6. From underneath, unfasten the bolts fixing
the engine cradle.
7. Disconnect the engine coolant hose near
the starter.
8. Disconnect air compressor suction and
discharge hoses.
With Vehicle Lowered
Lower the vehicle enough to access all
components.
Engine Compartment R.H. side
Disconnect cables from two chassis
grounds located on diagonal member.
Inside engine compartment, disconnect
starter, alternators and heater cables.
Also disconnect AFSS cable if
applicable.
