HEATER (SUPERSTRUCTURE CAB)
Repositioning of superstructure may aid in accessing heater for removal.
Ensure battery disconnect switch is in the OFF position.
Remove exterior rear access panel from cab.
Disconnect electrical power plug from front of heater (18, Figure 2-1-6).
Remove screw (2) and clamp (4), disconnect control cable (1) from control lever (107) at front of heater
(18), and remove control cable from heater.
Disconnect plug for fuel pump from rear of heater (18).
Remove nut (5) and ground wire from rear of heater (18).
Remove nut (6), lockwasher (7), clamp (8), and electrical lead from bottom of heater (18). Reinstall
lockwasher (7) and nut (6).
Diesel fuel is combustible and an irritant. Skin and eye protection is required.
Good general ventilation is normally adequate. Keep away from open flame
and other ignition sources.
Place suitable container under fuel line (9) to catch any residual fuel that may be present, and disconnect
fuel line (9) from elbow (22) at rear of heater (18).
Loosen clamp (10) and disconnect heater duct (11) from side of heater (18).
Remove nuts (12), washers (13), and clamp (14) securing exhaust pipe (21) to superstructure frame.
Remove nuts (15), lockwashers (16), washers (17), and heater (18) from bottom of cab.
If necessary, remove nuts (6), lockwashers (7), capscrews (19), and mounting straps (20) from heater
If necessary, remove exhaust pipe (21) from bottom of heater (18).
If necessary, remove elbow (22) from rear of heater (18).
If necessary, remove intake duct (23) from rear of heater (18), and outlet duct (24) from front of heater
(ducts secured with captured clips on case).
Disassemble heater assembly (18, Figure 2-1-6) as necessary to replace worn, damaged, or defective
Remove screws (25), cross bar (26), cover (27), and cover (28) from heater (18).