DRIVE PINION CLEARANCE

ELECTRICAL

f. Position retained and collar next to snap ring,

then use two pairs of pliers as shown in Figure 38

8. Attach field coil connector to solenoid terminal

with screw and lockwasher.

to force retainer over snap ring.

9. Check drive pinion clearance as directed later

under " rive Pinion Clearance."

10. If testing equipment is available, No Load and

Torque Tests may be made to determine if starter is up

to specifications.

H. DRIVE PINION CLEARANCE

1. The drive pinion clearance should be checked

whenever the starter has been overhauled. There is no

means of adjusting the pinion clearance. If clearance is

not within specified limits, it may indicate excessive

wear of the solenoid linkage or shift lever yoke lugs.

Clearance between the end of the pinion and the pinion

stop, with the pinion in cranking position, is shown in

Specification Listing.

2. To check clearance, connect a voltage source of

approximately 6 volts (three battery cells in series or a

6-volt battery) between the solenoid switch terminal (S)

Figure 38.

and ground.

4. Install thrust washer over end of armature shaft,

CAUTION: Do not connect the voltage source to

then install armature and overrunning clutch assembly

ignition coil terminal (R) of the solenoid. Do not

in drive end housing, tilting armature as necessary to

use a 12-volt battery instead of the 6 volts specified

make lugs on shift lever yoke engage collar on

as this will cause the motor to operate. As a further

overrunning clutch.

precaution to prevent motoring, connect a heavy

jumper lead from the solenoid motor terminal to

5. Assemble solenoid and return spring to drive

ground.

housing, with solenoid plunger inserted into solenoid

case, and secure with two screws and lock washers.

3. After energizing the solenoid with the clutch

shifted forward, push the pinion back as far as possible

6. Apply sealing compound to extended portion of

to take up any movement, and check the clearance with

solenoid case flange contacted by field frame. Make

a feeler gauge as shown in Figure 39. If not within

sure all brush holders, springs, and brushes are installed

specifications, disassemble and replace worn parts in

in field frame and all leads are securely connected.

solenoid and shift lever linkage.

7. Place field frame over armature shaft, pulling

I. TESTING

brushes out over commutator, and engage dowel pin in

field frame in hole in drive housing. Install commutator

If the brushes. brush spring tension, and commutator

end frame over armature shaft, then install through-bolts

through commutator end frame and thread into tapped

holes in drive housing. Tighten through-bolts firmly.

B-79