CHRYSLER SERVICE MANUAL
ENGINE—151
ENGINE TUNE UP
1.
MINOR TUNE-UP
Clean and adjust spark plugs (.035 inch gap).
Adjust or replace distributor contact points
(.015 to .018 inch gap). Check distributor cap
for cracks and corrosion. Inspect rotor, rotor
spring and plunger. Inspect distributor to spark
plug wires for cracks. Inspect small lead wires
for tightness, breakage, or damaged insulation.
Check for excessive play in distributor vacuum
advance plate bearing. Reset ignition timing.
Check battery specific gravity and clean and
tighten battery connections. Check starter am-
perage draw. Inspect fan belt, and check adjust-
ment. Clean and oil the air cleaner. Tighten
carburetor flange nuts. Set carburetor idle mix-
ture adjustment. Adjust throttle stop screw so
engine idles at 450 to 500 r.p.m. Check manifold
heat control valve.
The following procedures are provided as a
guide which should be followed when attempting
minor engine repairs or a complete engine over-
haul.
Service procedures for removal, inspection,
repair and installation of engine components are
provided in this section. In this way, informa-
tion can be followed for specific operation, or
for complete engine overhaul.
On cars equipped with air conditioning,
power steering, power brakes, heater etc., refer
to Section covering this equipment for removal,
installation and adjustment procedures.
2.
MAJOR TUNE-UP
A periodic engine tune-up will assure maximum
engine performance and fuel economy. The fol-
lowing test should be made when a complete
engine analysis is being made during a Major
Tune-Up. In addition, perform all steps of a
"Minor Tune-Up."
Tighten cylinder head bolts and manifold
nuts.
Cylinder head bolts should be tightened
while engine is at normal operating tempera-
ture. Make a compression test. The compression
should not vary more than 15 pounds between
cylinders. Refer to "Specifications" for com-
pression pressures. Check coil and condenser
and inspect primary and secondary wires. Test
fuel pump for pressure and vacuum, and adjust
carburetor. Refer to Fuel and Exhaust System,
Section VIII, "Carburetor Adjustments." Check
combustion analysis. Clean and re-oil the air
cleaner, and check manifold heat control valve.
Road test car as a final check.
SERVICE PROCEDURES
3.
REMOVAL OF ENGINE ASSEMBLY
(From
Car)
Drain cooling system and remove battery. Re-
move fan shroud, radiator and hood. Before
removing hood, scribe outline of hinge brackets
on hood to assure proper adjustment when in-
stalling. Disconnect fuel lines and wires attached
to engine units. Remove air cleaner and carbu-
retor. Attach engine lifting fixture, Tool C-3466,
to carburetor flange studs on intake manifold
and attach a chain hoist to fixture eyebolt.
Raise car and disconnect propeller shaft at
transmission. Disconnect wires and linkage at
transmission and clutch. Remove exhaust pipe.
(Be sure exhaust system is sufficiently sup-
ported while engine is removed.)
Drain engine and transmission oil. Remove
rear crossmember to transmission support at-
taching bolts.
NOTE:
Place a rollaway jack under transmission to re-
lieve weight from crossmember. Place a wood
block between head of jack and transmission to
avoid damaging transmission oil pan. This jack
must support weight of rear of power plant and
must be able to roll with the engine as engine is
being removed from chassis.
Remove crossmember to frame bracket at-
taching bolts, and remove crossmember and rear
engine support.
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