Resistance Measurements

TM 11-6130-227-40

c. Relay K1(K6). Relay K1(K6) should operate

equipment deenergized and with the part discon-

n e t t e d from the remainder of the circuit. The ap-

w h e n 16 to 18 volts is applied to its coil (across

p r o x i m a t e resistances of the winding of reactor L1

t e r m i n a l s 1-2) and should release when the voltage

and of the coils of relays K1 through K6 are given in

is reduced to approximately 13 volts.

d. Relays K2-K6(L1-K5). Relay K2-K6(K1-K5)

the chart below.

Resistance

(ohms)

each should operate when a voltage of 4.8 volts

Terminals

Item

0.412

1-2

Reactor

( m a x i m u m ) is applied to its coil (across terminals

400

1-2

Relay

K1(K6)

1-2).

8.0

1-2

Relays

through

(K1

through

K5)

3-10. Resistance Measurements

Make all resistance measurements with the

Section

IV.

REMOVAL

AND

REPLACEMENT

PARTS

AND

TESTING

AFTER

REPAIR

a n d unsolder and disconnect the other cable lead

NOTE

f r o m the solder connection (fig. 3-6). Release the

All

maintenance

parts

for

Charter

strain relief bushing (9, fig. 3-3) in the back of the

Battery

PP-1660()/G

(TM

c a s e (12, fig. 3-1) and pull out the ac input cable.

11-6130-227-40P) are replaceable at

g e n e r a l support.

W h e n reinstalling the ac input cable, connect the

cable lead with a lug to TIME SWITCH M1 (19, fig.

3-11. General Procedures

3-3). Splice the other cable lead to one lead of blower

m o t o r B1 (6 fig. 3-4) and the black lead from the

All parts of the PP-1660( )/G, except transformer

primary winding of transformer T1 (4, fig. 3-3).

T1, are readily accessible when the cover of the case

Solder the connector and tape securely.

is removed and can be removed and replaced in-

d. Dc Output Cables (5, fig. 3-1). The positive (red

d i v i d u a l l y without first removing any other

parts.

c o n n e c t o r ) dc output cable is connected to resistor

I n s t r u c t i o n s for the removal and replacement

of all

R 1 (12, fig. 3-3) and the negative (black connector)

functional parts are provided in paragraph

3-12.

d c output cable is connectd to circuit breaker CB2

When removing parts or repairing wiring, tag

leads

(13, fig. 3-3). To remove either dc output cable,

and mark terminals for positive indication before

disconnect it, release the strain relief bushing (10 or

d i s c o n n e c t i n g any wiring to assure correct recon-

11, fig. 3-3) in the back of the case (12, fig. 3-1), and

nection. When wiring is replaced, use wire that

pull out the cable.

conforms with that specified in figure 3-6.

e. Ammeter M2 (1, fig. 3-3). Disconnect the leads,

3-12. Removal and Replacement of Parts

remove the mounting screws and nuts, and carefully

r e m o v e ammeter M2 from the front panel from the

NOTE

Most

parts

can be reinstalled

front. When reconnecting the ammeter leads, be

sure to observe correct polarity (fig. 3-6).

remounting

them

their

original

f. TIME SWITCH M1 (19, fig. 3-3). Loosen

the

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

two setscrews that secure TIME SWITCH knob

reconnecting the leads. Replacement

MP12A (6, fig. 3-1) and pull the knob off the shaft.

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

Disconnect the leads, remove the locknut, and

procedures or precautions are required.

remove TIME SWITCH M1 from the front panel

a. Cover (1, fig. 3-1). Remove four screws from the

from the rear. When reinstalling TIME SWITCH

top and three screws from each side of the cover and

M1, rotate the shaft fully counterclockwise and

carefully lift off the cover.

i n s t a l l TIME SWITCH knob MP12A (6, fig. 3-1) so

b . B l o w e r A s s e m b l y (5 a n d 6, fig. 3-4). R e m o v e

t h a t the pointer is at SLOW CHARGE. Be sure to

the two hexagonal nuts that fasten blower motor B1

t i g h t e n both setscrews.

( 6 ) to the bracket. Disconnect the leads at blower

g. CHARGE SWITCH S1 (2, fig. 3-3). L o o s e n t h e

motor B1 and lift out the blower assembly. To

two setscrews that secure CHARGE SWITCH

r e m o v e impeller MP4 (5, fig. 3-4) loosen the set-

k n o b MP12B (9, fig. 3-1) and pull the knob off the

screw in the hub and pull impeller MP4 off the shaft

shaft. Disconnect the leads, remove the locknut, and

of the motor B1.

r e m o v e CHARGE SWITCH S1 from the front panel

c. Ac Input Cable (4, fig. 3 1 ) .

Disconnect

one

from

the

rear.

When

reinstalling

CHARGE

cable lead from TIME SWITCH M1 (19, fig. 3-3)

3-5