Removal and Replacement of Parts

TM 11-6130-227-40

SWITCH S1, rotate the shaft fully coun-

breakers CB2 (13, fig. 3-3) and CB3 (8, fig. 3-3). The

t e r c l o c k w i s e and reinstall CHARGE SWITCH knob

s u b p a n e l is located behind transformer T1 (4, fig.

MP12B (9) so that the pointer is at OFF. Be sure to

3 - 3 ) and is fastened to the case by three screws.

Parts mounted on the subpanel can be removed

t i g h t e n both setscrews.

individual (without removing the subpanel) by

h. BATTERY VOLTS SWITCH S2 (7, fig. 3-1).

disconnecting their l e a d s a n d r e m o v i n g t h e

P u l l BATTERY VOLTS switch knob MP11 (8, fig.

m o u n t i n g hardware. To remove the subpanel as an

3 - 1 ) straight forward off the shaft. Disconnect the

assembly, it is necessary first to disconnect all leads

l e a d s , remove the locknut, and remove BATTERY

VOLTS switch S2 from the front panel from the

connected to parts not mounted on the subpanel.

rear. When reinstalling BATTERY VOLTS switch

n. Resistor R1 (12, fig. 33). Resistor R1 is

S2, rotate the shaft fully counterclockwise and

m o u n t e d on the inside of the back of the case by

reinstall BATTERY VOLTS switch knob MP11(8)

m e a n s of the same screw and nut that secure the

lower hanger of the ac input cable to the outside of

so that the engraved pointer is at 6.

the case. To remove resistor R1, disconnect the

i. Circuit Breaker CB1 (18, fig. 3-3). C i r c u i t

leads from its terminals and remove the nut and the

breaker CB1 is mounted on a bracket fastened to the

screw.

top flange of transformer T1 (4, fig. 3-3). To remove

circuit breaker CB1, disconnect the leads and

3-13. Removal and Replacement of Parts

remove the nuts, lockwashers, and screws that

(PP-1660B/G)

fasten circuit breaker CB1 to its bracket.

NOTE

j. Rectifiers CR1 and CR2. Rectifiers CR1 and

Most

parts

can be reinstalled

CR2 (2, fig. 3-4) are connected together and are

remounting them in their original

r e m o v e d as an assembly. The rectifier assembly is

l o c a t i o n s with the original hardware and

m o u n t e d on top of transformer T1 (4, fig. 3-3). To

reconnecting

the

leads.

Replacement

remove the rectifier assembly, take out the four

i n s t r u c t i o n s are given only when special

screws that secure it to transformer T1 (4),

procedures or precautions are required.

d i s c o n n e c t all leads, and lift the rectifier assembly

o u t of the case. The four screws (3, fig. 3-1) also

a. POWER Switch S3. Disconnect the leads,

m u s t be removed prior to removal of the rectifier

r e m o v e the locknut, and remove POWER switch S3

assembly.

from the front panel from the rear.

k. Reactor L1 (3, fig. 3-3). Reactor L1 is mounted

b. FAN SAFETY Switch S4. Disconnect the

i n front of transformer T1 (4, fig. 3-3). To remove

leads, remove two screws from front panel, and

r e a c t o r L1, disconnect the two pigtail leads from

remove SAFETY switch S4 from the front panel

TIME

SWITCH

(19,

fig.

3-3)

and

circuit

from the rear.

breaker CB1 (18, fig. 3-3), remove the two mounting

c. Circuit Breaker CB1. C i r c u i t B r e a k e r C B 1 i s

screws, accessible from the bottom of the case, and

mounted on a bracket fastened to the mounting

lift out reactor L1.

bracket of the rectifier assembly. To remove circuit

1. Transformer T1 (4, fig. 3-3). R e m o v e r e c t i f i e r s

b r e a k e r CB1, disconnect the leads and remove the

C R 1 and CR2 (j above) and circuit breaker CB1 ( i

n u t s , lockwashers, and screws that fasten circuit

above); it is not necessary to disconnect circuit

breaker CB1 to its bracket.

breaker CB1. Disconnect the 11 pigtail leads of

d. Neon Lamp DS1. Disconnect the leads and

t r a n s f o r m e r T1, remove the four mounting screws,

r e m o v e lamp assembly from front panel from the

and lift transformer T1 out of the case. When

rear, snap in, snap out.

r e i n s t a l l i n g transformer T1, be sure to solder and

3-14. Testing After Repair

t a p e the connection to the ac input cable lead and

the blower motor lead (fig. 3-6) securely.

Whenever the battery charger has been repaired,

m. Subpanel (16, fig. 3-3). The subpanel is a

check the overall, operation of the equipment.

U-shaped,

sheet-metal chassis on which are

Follow the procedure outlined in the equipment

mounted relay K1(K6) (17, fig. 3-3) relays

performance

checklist

(TM

11-6130-227-12).

K2-K6(K1-K5) (5, 6, 7, 14, 15, fig. 3-3), and circuit

3-6