Cleaning, Inspection and Repair. - TM-10-3930-630-120076

TM 10-3930-630-12

points. Inspect set for worn cam arm.

(6) Check cam for wear and damage.

(7) Check capacitor for leakage and

damage.

(8) Check distributor cap and rotor for

cracks, burned or pitted contacts, carbon streaks and

damage.

(9) Replace unserviceable parts.

Assembly.

(1) If bearings (20, fig. 4-42) were

removed, press new bearings into housing. Do not

ream, scrape or file bearing surfaces. Drill 0.125 inch

(3.18 mm) hole in bearing through oil cup hole. Clean

bearing thoroughly after drilling.

(2) Install weights (14) and springs (13) on

shaft

(18).

(3) Install washers (19) and shaft (18)

through bearings. Install seal (17) and coupling (16) on

end of shaft. Make sure scribe marks are aligned.

Drive pin (15) through coupling and shaft. Peen ends of

pin to secure coupling.

(4) Install bushing (12) and cam (11) on

shaft and secure with retaining ring (10).

(5) Install contact set (7) and capacitor (8)

TA034815

on plate assembly (6). Connect primary lead (9) to plate

and install plate in housing. Pull primary lead through

Figure 4-40. Adjusting distributor breaker point gap.

grommet in housing.

(6) Refer to b above and set breaker point

(2) Mark position of rotor and remove

gap. Apply a light coat of grease (GAA) to cam.

rotor (4) and dust seal (5) from shaft.

(7) Install dust seal (5) and rotor (4) on

(3) Remove screws and remove contact

shaft. Install rotor in same position as it was when

set (7) and capacitor (8) from plate (6). Disconnect

removed. Install oil cup (11).

primary lead (9) from contact set.

g. Installation.

(4) Carefully remove plate (6) from

(1) Install distributor through cylinder

distributor being careful not to damage primary lead or

head. Coupling and shaft must mate with distributor

rubber grommet.

drive shaft. Rotate distributor until tongue on distributor

(5) Scribe a mark on shaft and coupling to

shaft mates with slot in drive shaft.

assure proper installation and grind off head of coupling

(2) Secure distributor clamp (14, fig. 441)

pin (15). Remove pin, coupling (16) and seal (17) from

to cylinder head with capscrew (12) and lockwasher

shaft.

(13). Install distributor cap (3, fig. 442).

(6) Remove retaining ring (10) and

(3) Connect spark plug wires (2) to

remove cam (11) from shaft.

distributor and spark plugs. Connect high tension coil

(7) Lift shaft (18) from distributor and

wire (1) to distributor. Connect primary lead from

remove springs (13) and weights (14) from shaft (18).

distributor to coil (10).

(8) Do not remove bearings (20) from

(4) Place a few drops of oil (OE/HDO) in

housing (21) unless replacement is necessary. Press

oil cup on distributor.

bearings from housing to remove.

(5) Check ignition timing (h below).

e. Cleaning, Inspection and Repair.

h. Ignition Timing Check.

(1) Clean all metal parts in cleaning

(1) Remove distributor cap, rotor and dust

compound, solvent (P-D680) and dry thoroughly.

seal (d above). Check contact point gap (b above).

(2) Wipe distributor cap, dust seal, rotor,

Disconnect wire and remove number one spark plug

capacitor and housing clean with a dry cloth.

(located nearest fan) (para 4-54).

(3) Check weights, springs and plate for

(2) Refer to timing marks on flywheel flex

wear and damage.

plate.

(4) Replace dust seal if hard, worn or

(a) To gain access to flex plate timing marks (fig. 4-43),

dirty.

remove battery and battery tray (para 4-54).

(5) Inspect contact set for burned or pitted

4-48