Table 3-4. Table of Lubrication Data

friction plate (41) must line up between file

(10) Carefully press bearing and brush holder

marks on flange of drive shaft.

support assembly (52), with ball bearing (51) onto

shaft of armature assembly (48) until bearing is

(15) Install drive shaft assembly (36) into the

flush against baffle disc (47). Press only on inner

hollows shaft of armature assembly (48), making

race of bearing.

certain that splines of drive shaft assembly engage

(11) Install grommet (55) into stator (54).

those of armature shaft.

(12) Install armature into stator assembly,

(16) After placing washer (35) on end of shaft

alining holes for cap screws (32) so that brush

and so that it rests against fan (44), secure with two

h o l d e r s are centered in the brush inspection

piece locknut (34).

window of the stator assembly.

(17) Hold splined end of drive shaft with

(13) Position fan (44) on armature shaft using

spline wrench, and torque inner portion of nut (34)

to 180-200 inch-pounds,then torque outer portion

key (45).

(14) Assemble drive shaft assembly as follows:

of nut (34) to 125-150 inch-pounds.

If clutch parts were removed, slide friction plate

(18) Install fan (cover (31) and secure with the

twelve cap screws (32) and washers (33). Lockwire

(41) and pressure plate (40) over shaft (42) and

onto studs. See table 3-4 for method of lubrication.

cap screws in pairs.

Position the six springs (39) over studs and hold in

(19) lnstall the six brushes ( 2 9 ) securing

place with adapter retainer (38). Secure with nuts

brush leads with screws (30). Install brush cover

band assembly (28).

(37).

(20) Reassemble filter box (1 through 25).

NOTE

(21) Replace identification plate (1) and

Adjust drive shaft holding torque to 10--12

secure with Screws (2), i f r e m o v e d d u r i n g

foot-pound by tightening or loosening nuts

disassembly.

(37). There are two file marks on flange of the

shaft and one on perimeter of friction plate

( 2 2 ) Refer to TM 5-6115-440-20 for brush

(41). After checking torque, the file mark on

treatment.

Table 3-4. Table of Lubrication Data

Location

Lubricant

Application

Make certain that all splines surfaces

Drive Shaft

Grease MIL-L-3545

are liberally covered with a film of

lubricant

Grease M I L - L - 3 5 4 5

Apply a thin film of grease to clutch

Dampener Friction Plate

faces whenever assembling friction

and dampener plates to drive shaft.

(3) Connect terminal "A" to the generator side

3-15.

Starter-Generator Brush Run-in.

of the switch through 10-ohm rheostat.

a. Equipment Required. The usual equipment

( 4 ) R o t a t e the rheostat control to the

required for the brush run-in procedure follows:

minimum resistance reading and close the circuit

(1) A 28-volt direct current power source.

with the switch. The generator should start and run

(2) A set of V-blocks, padded with sponge

as a motor in a clockwise direction when viewed

rubber to support the generator.

from the air inlet end. If rotation is coun-

(3) A single-pole, single-throw switch capable

terclockwise, thoroughly cheek all internal and

of handling an excess of 400 amperes.

external connections.

(4) A rheostat having a minimum rating of 10

ohms and 20 amperes.

Make certain the rheostat is blocked off

( 5 ) A tachometer of suitable range, or a

in such a manner that it cannot be set to

stroboscopic light for indicating generator speed.

an i n f i n i t e resistance value a s t h i s

(6) A resistor in the armature circuit with an

would cause the generator to attain

0.1 ohm. 100 to 400 ampere rating.

excessive speed.

b. Run-In Procedure (fig. 3-12).

(5) Adjust the speed of rotation until the

(1) Mount the generator in the V-block for

armature is revolving at approximately 4,500 rpm.

support and connect terminal "E" of the generator

(6) Allow the generator to operate as a motor

to the negative terminal of the 28-volt direct current

until the brushes show a minimum seating of 90

power source.

percent in an axial direction and 100 percent in the

(2) Connect terminal "B" through the resistor

direction of rotation.

and switch to the positive terminal of the power

source.

3-17