CONTROL PANEL- TEST/REPLACE/REPAIR

TM 5-4930-233-14

TM 4930-14/1

AIR COMPRESSOR ASSEMBLY

4-26. CONTROL PANEL- TEST/REPLACE/REPAIR

This task covers:

a. Test

b. Removal

Disassembly

d. Repair

e. Assembly

f. Installation

INITIAL SET-UP:

Materials/Parts

General Safety Instructions

Teflon tape (Item 18, App E)

Tools

WARNING

General Mechanics Tool Box

When working on electrical compo-

(Section III, em 1, App B)

nents remove all jewelry, dogtags,

and metal items to avoid electrical

Test Equipment

shock and burns.

Multimeter (Section III, Item 4, App B)

NOTE

For the starter/ignition switch (2) continuity should not be present between terminals:

B and S when switch is OFF

B and I when switch is IGN

S and I when switch is START

Test

(1)

Tag and disconnect three electrical leads (1) from starter/ignition switch (2).

(2)

With multimeter, test starter/ignition switch (2) by checking for continuity between terminals.

(3)

If switch is defective, replace (para 4-26c).

(4)

Tag and disconnect two electrical leads (3) from cold start switch (4).

(5)

With multimeter, test cold start switch (4) for continuity between terminals.

(6)

If continuity is not present, replace cold start switch (4) (para 4-26c).

(7)

Tag and disconnect four electrical leads (5) from relay A (6).

(8)

With multimeter, test relay A (6) for continuity between terminals 30 and 87A. If no continuity is present,

replace relay A (6).

(9)

Repeat test between terminals 30 and 87. If continuity is present, replace relay A (6).

4-70