TM 5-3805-262-2010-6. CAB HEATER SYSTEM MAINTENANCEa. H e a t e r.This task covers removal, disassembly, cleaning, inspection, reassem-b l y , a n d i n s t a l l a t i o n o f t h e c a b h e a t e r.TOOLS: No. 1 Common Organizational Maintenance Tool KitFixed open end wrench setSocket wrench set, 3/8 inch driveSocket head screw key setE l e c t r i c a l r e p a i r t o o l k itScrewdriverMATERIALS/PARTS: Clean cloths (Appendix C, item 1)Cleaning solvent P-D-680 (Appendix C, item 2)Detergent (Appendix C, item 3)Insulation tape (Appendix C, item 5)Adhesive (Appendix C, item 8)NOTEPRELIMINARY PROCEDURE: Engine side panels removed (page 9-14), heaterw a t e r s h u t - o f f v a l v e s c l o s e d a t w a t e r p u m p a n d e n g i n e b l o c k , b a t t e ryground cable disconnected (page 5-148), and operator’s seat upper seatsupport removed from cab (page 9-31).REMOVAL(1)(2)(3)(4)(5)(6)(7)(8)At bottom of heater, disconnect spade terminal (1) from heater black wirespade terminal (2) by grasping terminals with your fingers and pullingthem apart.Disconnect wiring harness white wire spade terminal (3) from heaterorange wire spade terminal (4).Loosen clamps (5, 6, and 7).Remove tube (8) by pulling from hoses (9 and 10). Remove clamps (6 and7 ) .Remove hose (9) by pulling from heater (18) port. Remove clamp (5).Loosen clamp (11) and disconnect hose (12) by pulling from heater (18)port. Remove clamp (11).Remove four nuts (13), lock washers (14), capscrews (16), and washers(17) while supporting heater (18). Remove heater from heater console.Remove wire lead (15).10-28
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