TM 9-2320-280-20-2
3-70. RADIATOR LOWER TUBE ASSEMBLY REPLACEMENT
This task covers:
a. Removal
b. Installation
INITIAL SETUP:
Tools
Manual References
General mechanic’s tool kit:
TM 9-2320-280-24P
automotive (Appendix B, Item 1)
Equipment Condition
Materials/Parts
Cooling system drained (para. 3-60).
Two locknuts (Appendix G, Item 58)
Tape (Appendix C, Item 50)
a. Removal
1. Remove draincock (11) from radiator lower tube assembly (10).
2. Remove two locknuts (5), washers (3), capscrews (2), and washers (3) from radiator lower tube
assembly (10) and frame bracket (4). Discard locknuts (5).
3. Loosen clamp (7) and disconnect water pump inlet hose (6) from radiator lower tube assembly (10).
4. Loosen clamp (8) and disconnect surge tank to lower radiator hose (9) from radiator lower tube
assembly (10).
5. Loosen clamp (12) and disconnect lower radiator hose (1) from radiator lower tube assembly (10).
6. Remove radiator lower tube assembly (10).
b. Installation
1. Install radiator lower tube assembly (10) on frame bracket (4) with two washers (3), capscrews (2),
washers (3), and locknuts (5). Tighten locknuts (5) to 6 lb-ft (8 Nom).
2. Connect lower radiator hose (6) to radiator lower tube assembly (10) with clamp (7).
3. Connect surge tank to lower radiator hose (9) to radiator lower tube assembly (10) with clamp (8).
4. Connect water pump inlet hose (1) to radiator lower tube assembly (10) with clamp (12).
5. Apply sealant type tape to threads of draincock (11) and install draincock (11) on radiator lower tube
assembly (10).
FOLLOW-ON TASK: Fill cooling system (para. 3-60).
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