ISUZU Amigo/Pick-ups/Rodeo/Trooper 1981-1996

Heater Core

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REMOVAL & INSTALLATION



See Figures 1 and 2



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Fig. Fig. 1: Exploded view of the heater core assembly-Rodeo and Trooper



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Fig. Fig. 2: When installing the new heater core take great care not to bend or damage the fins or tubing

  1. Disconnect the negative (-) battery cable.
  2.  
  3. Drain the engine coolant into a suitable container.
  4.  


CAUTION
When draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.

  1. Disconnect the heater hoses. Be careful not to damage the core by pulling on the hose to remove. Cut the hoses if they will not come off easily.
  2.  
  3. Remove the instrument panel.
  4.  
  5. Disconnect the resistor assembly.
  6.  
  7. If possible, disconnect and move the duct (non air conditioning) or the evaporator housing (air conditioning) to the right to gain clearance for the heater unit. If equipped with air conditioning, do not disconnect air conditioning system until absolutely necessary. Refer to General Information & Maintenance for discharging, evacuating and recharging the system.
  8.  
  9. Remove the instrument panel stay and heater unit.
  10.  
  11. Disassemble the heater unit by removing the duct, mode control case, core assembly and heater core.
  12.  

To install:
  1. Assemble the heater unit by installing the duct, mode control case, core assembly and heater core.
  2.  
  3. Install the heater unit and instrument panel stay.
  4.  
  5. Connect the duct (non air conditioning) or the evaporator housing (air conditioning) to the heater unit. Evacuate and recharge the air conditioning system if the system was discharged to remove the evaporator assembly.
  6.  
  7. Connect the resistor assembly.
  8.  
  9. Install the instrument panel as outlined in this section.
  10.  
  11. Connect the heater hoses. Be careful not to damage the core by pulling on the hose.
  12.  
  13. Refill the engine coolant into a suitable container.
  14.  
  15. Connect the negative (-) battery cable and check for leaks.
  16.  

 
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