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TM 9-2320-364-20-5
19-48
Material/Parts
Cable Ties (Item 25, Appendix C)
Sealing Compound (Item 72, Appendix C)
Locknut (2) (Item 106, Appendix F)
This task covers:
a. Removal
b. Installation
c. Follow-On Maintenance
INITIAL SETUP
Equipment Condition
Engine OFF, (TM 9-2320-364-10)
Wheels chocked, (TM 9-2320-364-10)
Cab engine access panel removed, (Para 17-24)
Electric Control Box (ECB) right side panel
removed, (Para 17-21)
Electronic Control Box (ECB) cover removed,
(Para 17-22)
Tools and Special Tools
Tool Kit, General Mechanic’s: Automotive
(Item 74, Appendix G)
Pan, Drain (Item 46, Appendix G)
19-15. HEATER HOSES AND FITTINGS REPLACEMENT.
a.
Removal.
Extreme care should be taken when removing heater hoses if water temperature gage reads
above 180 degrees F (82 degrees C). Contact by steam or hot coolant may result in injury or
death to personnel.
NOTE
Remove cable ties as needed.
Place drain pan under hose.
Remaining steps are performed inside cab.
Valves are closed by turning clockwise.
(1)
Close heater coolant shut off valve (1) on thermostat housing (2).
(2)
Close heater coolant shut off valve (3) on oil cooler (4).
(3)
Remove hose clamp (5) and return hose (6) from heater coolant shut off valve (1).
(4)
Remove hose clamp (7) and supply hose (8) from heater coolant shut off valve (3).
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