Cam And Centrifugal Advance Weights Removal And Installation; Distributor - Removal And Installation - Ford LSG 875 Service Manual

2-21
IGNITION SYSTEM
2-21
PRESTOLITE DISTRIBUTORS (MARINE & IRRIGATION ENGINES)
DESecRIPTION AND OPERATION (Continued)
CAM AND CENTRLFUGAL ADVANCE
WEIGHTS
Removal
1. Remove the breaker plate and sub-plate
from the distributor.
2. Mark one of the distributor weight
springs and its brackets. Also mark one
of the weights and its pivot pin.
3. Carefully unhook and remove the weight
springs.
4. Lift the lubricating wick from the cam assem-
bly. Remove the cam assembly retainer and
lift the cam assembly off the distributor
shaft. Remove the thrust washer.
5. Lift the weights out of the distributor.
Installation
1. If the weights were removed, fill the grooves
in the weight pivot pins with distributor cam
lubricant (C4AZ-19D530-A).
Position the weights in the distributor
(the
marked weight is placed on the marked pivot
pin)
and install the weight retainers.
2. Place the thrust washer on the shaft.
3. Fill the grooves in the upper portion of the
distributor shaft with distributor cam lubricant
(C4AZ19D530-A).
4. Install the cam assembly.
Be sure that the
marked spring bracket on the cam as-
sembly is near the marked spring bracket
on the stop plate.
Place a light film of distributor cam lubri-
cant (C4AZ-19D530-A) on the distributor cam
lobes. Install the retainer and the wick. Oil
the wick with SAE-1OW engine oil.
5. Install the weight springs.
Be sure that the
marked spring is attached to the marked
spring brackets.
6. Install the plate assembly.
7. Install the primary wire in the distributor.
Connect the primary and condenser wires to
the breaker point terminal.
8. Adjust the breaker point gap or dwell as
required.
DISTRIBUTOR
Removal
1. Remove the air cleaner. Disconnect the pri-
mary wire from the coil. Remove the distrib-
utor cap.
2. Scribe a mark on the distributor body and
the cylinder block indicating the position of
the body in the block, and scribe another
mark on the distributor body indicating the
position of the rotor. These marks can be
used as guides when installing the distribu-
tor in a correctly timed engine.
3. Remove the distributor hold down bolt and
clamp. Lift the distributor out of the block.
Do not rotate the crankshaft while the dis-
tributor is removed, or it will be necessary to
time the engine.
Installation
1. If the crankshaft was rotated while the dis-
tributor was removed from the engine, it will
be necessary to time the engine. Rotate the
crankshaft until No. 1 piston is on TDC after
the compression stroke. Align the TDC mark
on the timing pointer with the timing pin on
the crankshaft damper. Position the distribu-
tor in the block with the rotor at the No. 1
firing position.
Make sure the oil pump intermediate shaft
properly engages the distributor shaft. It may
be necessary to crank the engine with the
starter, after the distributor drive gear is par-
tially engaged to engage the oil pump inter-
mediate shaft.
Install, but do not tighten, the retaining
clamp and bolt. Rotate the distributor to ad-
vance the timing to a point where the breaker
points are just starting to open. Tighten the
clamp.
2. If the crankshaft has not been moved, posi-
tion the distributor in the block with the rotor
aligned with the mark previously scribed on
the distributor body and the marks on the
distributor body and cylinder block in
alignment.
3. Install the distributor cap.
4. Connect the primary wire to the coil.
5. Check the ignition timing with a timing light
and adjust to specifications.
6. Install the air cleaner.