Distributor Repair cont'd

TM 10-3930-633-34

hub. Press gear on until hole in gear aligns with

(5) Remove the diaphragm retaining screws

hole in shaft for installation of pin (4).

( 1 4 ) and slide the diaphragm out of the

(3) Check the shaft end play with feeler gage

distributor.

placed between the collar and the base of the

(6) Working from the inside of the

distributor. If the end play is not within 0.003 to

distributor, pull the primary wire (22) through the

0.010 inch, replace the shaft and gear.

opening in the distributor.

(4) Remove the distributor from the press.

(7) Remove the spring clip (26) the flat

Install the gear retaining pin (4).

washer and the spring washer securing the

(5) Position the distributor in a vise. Fill the

breaker plate (26) to the sub-plate (27).

g r o o v e s in the weight pivot pins with a

(8) Remove the sub-plate retaining screws

distributor cam lubricant.

and lift both plates (26 and 27) out of the

(6) Position the weights (33) in the

distributor,

distributor (the marked weight is placed on the

(9) Mark one of the distributor weight

m a r k e d pivot pin) and install the weight

springs and its brackets. Also mark one of the

retainers.

weights and its pivot pin.

(7) Place the thrust washer (30) on the shaft.

( 1 0 ) Carefully unhook and remove the

(8) Fill the grooves in the upper portion of

weight springs (32).

t h e distributor shaft with distributor cam

(11 ) Lift the lubricating wick from the cam

lubricant.

assembly. Remove the cam retainer (28). Lift the

(9) Install the cam assembly (29), Be sure

cam assembly off the distributor shaft. Remove

that the marked spring bracket on the cam

the thrust washer (30),

assembly is near the marked spring bracket on

(12) Remove the weight retainers and lift the

the stop plate.

weights (33) out of the distributor.

(10) If a new cam assembly is being in-

(13) Remove the distributor cap clamps (7).

stalled, make sure that the hypalon covered stop

(14) If the gear and shaft are to be used

is in the correct cam plate stop, This can be done

again, mark the gear and the shaft so that the pin

by measuring the length of the slot used on the

holes can be easily aligned for assembly. Remove

old cam and by using the corresponding slot on

the gear roll pin (4).

the new cam. Some of the cams will have the

(15) Invert the distributor and place it on a

support plate in a position that will allow the

length of the slot in degrees stamped near the

distributor shaft to clear the support plate and

slot. If the wrong slot is used, an incorrect

press the shaft out of the gear and the distributor

maximum advance will be obtained.

housing.

(11) Place a light film of distributor cam

(16) Remove the oil filler cap and the felt

lubricant on the distributor cam lobes. Install the

wick (31).

retainer and the wick. Saturate the wick with

c. Inspection.

SAE 10W engine oil.

(1) Check distributor shaft and bushing for

(12) Install the weight springs (32). Be sure

signs of wear. If wear is evident, the entire

that the marked spring is attached to the marked

spring brackets.

distributor should be replaced.

(13) Place the breaker plate (26) in position

(2) Check gear carefully for worn or damaged

on the sub-plate (27).

teeth. Replace a worn gear.

(14) Install the spring washer, the flat

(3) Check breaker and sub-plates to make

washer, and the spring clip that secures the

sure they fit properly and work without sticking

breaker plate to the sub-plate.

or binding.

(15) Install the sub-plate hold-down screws

(4) Use new point set and condenser, rotor,

(the ground wire should be under the sub-plate

and distributor cap when reassembling the

hold-down screw near the primary wire opening in

distributor.

the distributor).

(5) Replace primary wire if it is burned,

(16) Working from the inside of the

chafed, or corroded.

distributor, push the primary wire (22) through

d. Reassembly. See figure 3-9.

the opening in the distributor.

(1) Oil the shaft and slide it into the

(17) Slide the diaphragm (18) into the

distributor body.

opening in the distributor and place the link in its

(2) Place the assembly in a vise or press and

position.

install gear (3) on shaft using a piece of tubing

(18) Install the spring clip that secures the

sized to slide over shaft and bear against gear

3-12