T100 Extra Cab Pickup 4WD V6-3.4L (5VZ-FE) (1997)
Heater Core Case: Service and Repair
HEATER UNIT REMOVAL
1. REMOVE COOLING UNIT
See: Evaporator Case/Service and Repair
2. DRAIN ENGINE COOLANT FROM RADIATOR
INSTALLATION HINT: It is not necessary to drain out all the coolant.
3. DISCONNECT WATER HOSES FROM HEATER RADIATOR PIPES
INSTALLATION HINT:
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Push the water hose onto the heater radiator pipe as far as the ridge on the pipe.
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Install the hose clip in a position. as shown.
4. REMOVE INSTRUMENT PANEL AND REINFORCEMENT BRACES No.1 AND No.2
5. DISCONNECT CONTROL CABLES FROM HEATER UNIT
INSTALLATION HINT: For installing the control cables. refer to HEATER CONTROL CABLES ADJUSTMENT. See: Air Door/Air Door
Cable/Adjustments
6. REMOVE DUCT HEATER TO REGISTER NO.4
Remove the screw and the duct.
7. REMOVE HEATER TO REGISTER CENTER DUCT
Remove the screw and the duct.
8. REMOVE HEATER AIR DUCT
Remove the screw and the duct.
9. REMOVE HEATER UNIT
Remove the 2 bolts. the nut and the heater unit.
HEATER UNIT INSTALLATION
Installation is in the reverse order of removal.