Figure 3-13. Circuit for checking pinion clearance.

TM 5-4320-234-34

pinion stop (fig. 3-14). The clearance shall be 0.010 to

0.140 inch (0.0250 to 0.3500 cm).

Figure 3-13. Circuit for checking pinion clearance.

(1) Disconnect the motor field coil

connector from the solenoid motor terminal and insulate

it carefully.

(2) Connect a 24-volt battery from the

Figure 3-14. Checking pinion clearance.

solenoid switch terminal to the solenoid frame.

(3) With one end of jumper connected to

Starter Brush Replacement.

the solenoid motor terminal, momentarily strike the

other end against the starter frame. This will shift the

(1) Remove the through bolts (3, fig. 3-15)

drive assembly pinion into the cranking position where it

that secure the commutator end frame (4) to the starting

will remain until the battery is disconnected.

motor. Pull straight out on the end frame to disengage

the end frame bushing from the rotor shaft.

(4) Push the pinion back toward the

commutator end to eliminate slack movement. Using a

feeler gage, measure the distance between pinion and

3-16