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ENGINE 6-25
refer to Section 6 of the Chassis Overhaul Manual.
Because of the interchangeability and similarity of
many engines, engine sub-assemblies and engine parts,
regardless of which passenger vehicle they are used in,
typical illustrations and procedures are used except
where specific illustrations or procedures are necessary
to clarify the operation. Although illustrations showing
bench operations are used, most single operations, when
not part of a general overhaul, should be performed (if
practical) with the engine in the vehicle.
COMPONENT REPLACEMENT AND ADJUSTMENT
ENGINE ASSEMBLY
Removal
• .1. Drain cooling system and engine oil.
2. Remove air cleaner and disconnect battery cables at
battery.
3. Remove hood as outlined in Section 11.
4. Remove radiator and shroud as outlined in Sec-
tion 13.
5. Remove fan blade and pulley as outlined in Sec-
tion 6K.
6. Disconnect wires at:
•
Starter solenoid
•
Delcotron
•
Temperature switch
•
Oil pressure switch
•
Coil
7. Disconnect:
•
Accelerator linkage at pedal lever.
•
Exhaust pipes at manifold flanges.
•
Vacuum line to power brake unit at manifold (if
so equipped),
•
Power steering pump lines at pump end (if so
equipped).
•
Fuel line (from tank) at fuel pump.
•
Engine cooler lines (if so equipped).
•
Oil pressure gauge line (if so equipped).
8. Raise vehicle and place on jack stands.
9. Remove propeller shaft.
NOTE:
If plug for propeller shaft opening
in
transmission
is
not
available,
drain
transmission.
10. Disconnect:
•
Shift linkage at transmission.
•
Speedometer cable at transmission.
•
Transmission cooler lines (if so equipped).
11. On synchromesh equipped vehicles, disconnect clutch
linkage at cross-shaft then remove cross-shaft en-
gine bracket.
12. Remove rocker arm covers as outlined, then attach
engine lifting adapter at the proper cylinder head bolt
locations.
13. Remove front mount bolts.
14. Attach lifting device and raise engine to take weight
off front mounts, then remove rear mount bolts.
15. Raise engine to take weight off rear mount, then re-
move crossmember.
NOTE:
On Chevrolets it will be necessary to
remove mount from transmission before cross-
member can be removed.
16. Remove engine-transmission assembly from vehicle
as a unit.
17. Remove transmission (and clutch):
Synchromesh Transmission
a. Remove clutch housing cover plate screws.
b. Remove bolts attaching the clutch housing to en-
gine block then remove transmission and clutch
housing as a unit.
NOTE:
Support the transmission as the last
mounting bolt is removed, and as it is being
pulled away from the engine (to prevent damage
to clutch disc).
c. Remove starter and clutch housing rear cover
plate.
d. Loosen clutch mounting bolts a turn at a time (to
prevent distortion of clutch cover) until the spring
pressure is released. Remove all bolts, clutch
disc and pressure plate assembly.
Automatic Transmission
a. Lower engine, secured by the hoist, and support
engine on blocks.
b. Remove starter and converter housing underpan.
c. Remove flywheel-to-converter attaching bolts.
d. Support transmission on blocks.
e. Remove transmission-to-engine mounting bolts.
f. With the hoist attached, remove blocks from the
engine only and slowly guide the engine from the
transmission.
18. Mount engine in stand.
Installation
1. Attach lifting device to engine and remove engine
from engine stand.
2. Install transmission (and clutch):
Synchromesh Transmission
a. Install the clutch on flywheel as outlined in Sec-
tion 7.
b. Install clutch housing rear cover and starter.
c. Install transmission and clutch housing as out-
lined in Section 7.
d. Install clutch housing cover screws and tighten
securely.
Automatic Transmissions
a. Position engine adjacent to the transmission and
align the converter with the flywheel.
b. Bolt transmission to engine, then raise engine and
transmission assembly and install flywheel to
converter attaching bolts.
c. Install converter housing underpan and starter.
3. Tilt and lower engine and transmission assembly into
the chassis as a unit, guiding engine to align front
mounts with frame supports.
4. Install front mount bolts and torque to specifications.
5. Raise engine enough to install rear crossmember,
then install crossmember, install rear mount, lower
engine and torque rear mount to specifications.
CHEVROLET CHASSIS SERVICE MANUAL
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