TM-9-2350-277-20-1

CARRIER M113A3, M577A3, M1059A3, M1064A3, M1068A3 AND M58

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL VOLUME 1 OF 6

TM-9-2350-277-20-1 - Page 151 of 855

TM 9-2350-277-20-1

ENGINE OVERHEATS (NEW VSFD CONFIGURATION) — Continued

0014 01

B4Y

1.

Manually rotate adjustable (1) and nonadjustable (2)

ventilating fan drive idler pulleys.

2.

Do pulleys spin freely?

B4YN

1.

Replace adjustable and/or

nonadjustable idler pulleys

(WP 0240 00).

2.

Verify no faults found.

B5Y

1.

Replace variable speed fan drive unit (WP 0249 01).

2.

Verify no faults found.

CY

1.

Stop your engine. See TM 9-2350-277-10.

2.

Disconnect battery ground strap (WP 0337 00,WP 0338 00,

or WP 0339 00).

3.

See wiring diagram.

4.

Check continuity of the following connections:

P1(A) to Battery ground 7

P1(B)toP4(A)andE3

P1(C) to P4(B)

P1(E)toBattery6andE4

,P3,P2(S)

P2(D) to P5(A)

P2(E) to P5(B)

P2(G) to P6(A)

P2(H) to P6(B)

P2(R) to P3

5.

Do all checks read zero?

CYN

1.

Replace variable speed fan drive

harness. (WP 0359 01).

2.

Verify no faults found.

001401-6

Change 5