Section II. STARTER

TM 10-3930-630-34

(1) Install assembled drive end frame

suitable pressing tool and press bearing (33) into frame

(14, fig. 4-1), with stator (29) in place, on rotor (1.5).

bore until flush with surface.

(2) Remove tape from bearing and slip

(5) Inspect retainer (31). If felt seal in

rings. Insert a pin through hole in frame to hold brushes

retainer is hardened or worn, replace retainer. Fill cavity

away from the slip rings.

between retainer and bearing with grease (GAA) and

(3) Check match marks made during

install retainer. Secure retainer with three screws (30).

disassembly, and carefully install rotor shaft into slip ring

(6) Inspect bearing (36) in slip ring end

end frame to avoid damage to bearing and seal. Secure

frame for wear and damage. If bearing is worn or

drive end frame (14) and slip ring end frame (11) with

damaged, replace bearing. Press bearing from frame

four thru bolts (10). Tighten bolts evenly.

(11) with a suitable pressing tool.

(4) Install nuts (4 and 5) and washers (6,

(7) Install new bearing (36) in frame (11)

7, and 8) on terminal stud (9).

and press bearing in from outside of frame until bearing

(5) Install fan and pulley (3) on rotor shaft

is flush with outside of frame.

and secure with nut (1) and washer (2). Hold rotor in

vise and tighten nut to a torque of 40 to 60 foot pounds

4-4.

Alternator, Reassembly and Installation

(54.2 to 81.3 N m).

a. Reassembly. After all tests and repairs are

b. installation. Refer to TM 10-3930-630-12

completed, reassemble the major subassemblies of the

and install the alternator.

alternator as follows:

Section II. STARTER

4-5.

Description

The engine starter is mounted on the left side of the

flywheel housing. A solenoid relay is mounted on the

starter and actuates the overrunning clutch. The clutch

pinion engages the flywheel and rotates the engine to

start it.

4-6.

Starter, Removal and Disassembly

a. Removal. Refer to TM 10-3920-630-12 and

remove the starter.

b. Test. Check the starter as follows:

(1) Connect the starter in series with an

ammeter capable of reading several hundred amperes,

a variable resistance and a voltmeter as shown in figure

4-7.

(2) Operate starter and adjust resistance

to obtain a reading of 9 volts on voltmeter.

(3) Check rpm of starter. The starter must

operate at 5,500 to 10,500 rpm.

TA067404

(4) With starter operating at specified

Figure 4-7. Starter no-load test.

rpm, check ammeter. Reading must be between 50 to

80 amps.

Resistance Test.

(5) If starter operates at lower speed and

(1) Connect starter into a circuit with an

with a high current draw, repair starter.

ammeter, voltmeter, variable resistance and a battery

(6) If starter does not operate within limits

as shown in figure 4-8.

specified in (3) and (4) above, repair starter.

4-5