Table 5-1. Direct Support Troubleshooting (cont)

TM5-6625-2694-13&P

Table 5-1.

Direct Support Troubleshooting (cont'd)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Step

Check Contactor Relay K4.

3 (+);

Measure voltage across terminals 1 (-) to

should be 24 VDC.

terminals 5 (+)

to 4 (-);

Measure voltage across

should be 0 VDC.

Refer

and replace Contactor

to paragraph

5-13

if measurement across

terminal 1 to terminal 3

Relay

4 to

terminal

and measurement

across

is 24 VDC

terminal 5 is NOT 0 VDC.

PARTIAL LOAD APPLIED TO GENERATOR.

Step 1.

Check Contractors K1 and K2.

terminal

and

Measure

voltage across terminal X1

X2 of each contactor.

Should read 24 VDC.

applied to terminals

X1 and X2,

With 24 VDC

input terminals of

Contactor to

measure voltage from

to LO.

terminals of Contactor

LO and from output

Measurements should be equal.

and replace Contactor if

Refer to paragraph 5-12

measurements from input and output terminals to LO are

NOT equal.

5-6