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On a 1994 jeep laredo how do the ac lines disconnect at fire wall to remove blower assembly to replace heater core.ac lines have been discharged.

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Auto zone can sell you a version of the correct tool that will work they are white rings in varios sizes first you put ring on line and push inside of piece that looks crimped you can get it under one side of this crimp once in all the way you should be able to [pull line apart then repeat on other line then when going back in they snap together

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Why must i discharge the air conditioning refridgerant prior to removal of the heater core on a 2003 c230 mercedes 1.8l coupe.


The reason in why you must evacuate the a/c system with an a/c machine before you can remove the heater core is because the evaporator is located inside of the heater core box assembly. So before the heater core box assembly can be removed the a/c system must be evacuated then you can disconnect the a/c lines that go through the firewall to the evaporator.

Jul 01, 2015 | 2004 Mercedes-Benz C230 Kompressor

1 Answer

Do you have to remove dashboard on a 1990 geo storm gsi to remove and reinstall the heater core. can you give me the step by step if the dashboard does not have to be removed.


log in to alldata.com and read that? its there?
anyone can,


  1. Disconnect the negative battery cable. Drain the cooling system.
  2. remove core hoses passing thru fire wall.
  3. Remove the three duct mounting screws.
  4. Disconnect the duct between the blower assembly and the heater unit.
  5. Remove the five screws attaching the mode control case to the heater core case.
  6. Remove the mode control case. Do not remove the link assembly.
  7. Remove the five screws to separate the two halves of the heater core case.
  8. remove the core.

Feb 24, 2015 | 1990 Geo Storm

1 Answer

How do i replace the heater core 1997 isuzu hombre


See me at website for images can only send one through this channel. www.autorepairhelp.us

Best Regards,

Master Tech Lee

HEATER BOX SHIELD
Image
Heater Box Heat Shield
Remove or Disconnect
1. Fasteners that retain heat shield to heater box assembly.
Image [ Heater Box Heat Shield
Install or Connect
1.Fasteners that retain heat shield to heater box assembly.
Tighten
-Bolts Screws to 2.2 N.m (25 lb in).
HEATER ASSEMBLY
Image ' Heater Hoses
Image ' A/C Evaporator Tube Assembly
Image ' Evaporator Core
Image ' Evaporator Core Assembly
Image ' Heater Assembly
Remove or Disconnect
1.Engine coolant. Refer to Draining and Filling Cooling System in Engine Cooling.
2.Heater hoses. Refer to Heater Hoses.
3.Instrument panel. Refer to Instrument Panel Replacement in Interior Trim.
4.Air inlet assembly. Refer to Air Inlet Assembly Replacement.
5.Vacuum lines.
Important
-Clearly label vacuum line connections.
6.Heater assembly studs inside engine bay.
7.Blower motor resistor. Refer to Blower Motor Resistor.
8.Stud inside heater core housing.
-Stud is revealed by removing the blower motor resistor.
9.Rear case screws.
10.Heater assembly.
11.Seals.
Imagt
Imagt
Imagt
Imagt
Imagt
Heater Hoses
A/C Evaporator Tube Assembly
Evaporator Core
Evaporator Core Assembly
Heater Assembly
Install or Connect
1.Seals.
2.Heater assembly.
3.Rear case screws.
4.Stud inside heater core housing.
Tighten
-Stud to 1.9 N.m (17 lb in).
5.Blower motor resistor. Refer to Blower Motor Resistor.
6.Heater assembly studs inside engine bay.
Tighten
-Studs to 1.9 N.m (17 lb in).
7.Vacuum lines.
8.Air inlet assembly. Refer to Air Inlet Assembly Replacement.
9.Instrument panel. Refer to Instrument Panel Replacement in Interior Trim.
10.Heater hoses. Refer to Heater Hoses.
11.Engine coolant. Refer to Draining and Filling Cooling System in Engine Cooling.
-Check the system for leaks.


Auto Repair Help US 699e5693-1e5b-4101-9428-b5c0b4e46f83.jpg

Sep 06, 2014 | 1997 Isuzu Hombre

1 Answer

I need information on how to change my blower motor assembly on a 2001 jeep grand cherokee laredo 4x4 4.0


The blower motor is located under the right side of the dash in the A/C Heater housing. Disconnect blower cooling hose. Remove blower connector from retainer and unplug the connector. Remove the 3 blower motor screws and remove blower motor. Reverse procedure to install..


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Jun 30, 2011 | 2001 Jeep Grand Cherokee

1 Answer

To replace the heater core i have to remove the dash. I am able to remove every thing but a few wire harnesses. they do not have any clips or any thing. how do i remove these? and how do i remove the...


Heater Core REMOVAL & INSTALLATION 1985-95 Models For the removal of the heater core, which is located inside the heater-A/C unit assembly, first remove the heater-A/C unit assembly from the vehicle as described later in this section. Once the unit has been removed, use the following procedure to extract the heater core:
  1. Place the heater-A/C unit on a suitable work surface.
  2. Locate and remove one retaining nut from the blend-air door pivot shaft.
  3. To remove the top cover from the heater-A/C case, the crank arm must be removed.
  4. Disconnect the vacuum lines from the defroster and panel mode vacuum actuators and position them out of the way.
  5. Remove the 3 heater-A/C unit cover attaching screws, fastened upward at the defroster outlet chamber.
  6. Remove the 2 heater-A/C unit cover attaching screws, fastened upward at the air inlet plenum.
  7. Remove the 11 heater-A/C unit cover attaching screws, fastened downward into the housing. Then lift the cover from the heater-A/C unit.
  8. Remove the old heater core from the case. To install:
  9. Install the new heater core into the heater-A/C unit case in the same position as the old one.
  10. Place the cover onto the case and secure in place with the 11 retaining screws.
  11. Install the remaining components in the reverse of the removal procedure.
  12. Install the heater-A/C unit assembly into the vehicle.
---
1989-95 Models EXCEPT DYNASTY AND PREMIER NOTE: The following procedure can be used on all specified 1989-95 models. Slight variations may occur due to extra connections, etc., but the basic procedure should cover all models. Modify the service steps as necessary. Refer to the supplemental restraint system disarming procedure as necessary. NOTE: It is vital to have the A/C system discharged by a reputable automotive technician utilizing a recovery/recycling machine before detaching the A/C system. Refer to the A/C system precautions presented in Section 1.
  1. If the vehicle is equipped with air conditioning, have the A/C system discharged by a qualified professional mechanic, using an approved recovery/recycling machine.
  2. Disconnect the negative battery cable. Drain the cooling system.
  3. Clamp off the heater hoses near the heater core and remove the hoses from the core tubes. Plug the hose ends and the core tubes to prevent spillage of coolant.
  4. Disconnect the H-valve connection at the valve and remove the H-valve. Remove the condensation tube.
  5. Remove the glove box, right side kick and sill panels, and all modules, relay panels and computer components in the vicinity of the heater housing.
  6. Remove the lower instrument panel silencers and reinforcements. Remove the radio and other dashboard-mounted optional equipment, as required.
  7. Remove the floor console, if equipped. Remove the floor and defroster distribution ducts.
  8. Remove the bolt holding the right side instrument panel to the right cowl.
  9. Disconnect the blower motor wiring, antenna, resistor wiring and the temperature control cable.
  10. On 1990-95 Daytona and LeBaron models, using a suitable cutting device, cut the instrument panel along the indented line on the padded cover to the right of the glove box opening. Cut only plastic, not metal. Remove the reinforcement and the piece of instrument panel that is riveted to it.
  11. Disconnect the demister hoses from the top of the housing, if equipped.
  12. Disconnect the hanger strap from the package and rotate it aside.
  13. Remove the retaining nuts from the package mounting studs at the fire wall.
  14. Fold the carpeting and insulation back to provide a little more working room and to prevent spillage from staining the carpeting. Pull the right side of the instrument panel out as far as possible.
  15. Remove the heater housing from the dash panel and remove it from the passenger compartment. If the passenger seat is preventing removal, remove it.
  16. To disassemble the housing assembly, remove the retaining screws from the cover and remove the cover.
  17. Remove the retaining screw from the heater core and remove the core from the housing assembly. To install:
  18. Remove the temperature control door from the housing and clean the unit out with solvent. Lubricate the lower pivot rod and its well, then install. Wrap the heater core with foam tape and place it in position. Secure it with its screw.
  19. Assemble the housing, making sure all cover screws were used.
  20. Connect the demister hoses. Install the nuts to the fire wall and connect the hanger strap inside the passenger compartment.
  21. Fold the carpeting back into position.
  22. Install the bolt that attaches the right side of the instrument panel to the cowl.
  23. Connect the blower motor wiring, antenna, resistor wiring and the temperature control cable.
  24. Install the remaining components in the reverse of the removal procedure.
  25. Fill the cooling system.
  26. Connect the negative battery cable and check the entire climate control system for proper operation and leakage.
  27. Have the air conditioning system evacuated and recharged by a qualified professional mechanic utilizing the proper equipment.

Dec 15, 2010 | 1993 Plymouth Sundance

1 Answer

Removal instructions for heater core


First disconnect steering knucke under dash. Remove dash assembly to reveal heater/AC case. Disconnect heater hoses from engine compartment. Discharge and capture AC refrigerant. Remove heater case ,replace heater core . re-assemble .

Apr 27, 2010 | 1998 Ford Taurus

1 Answer

1984 Jeep CJ7 heater core leaking. '93 inline 6 motor. Wrangler dash. How to I remove the core?


  1. Disconnect battery ground cable and drain cooling system.
  2. Disconnect heater core hoses.
  3. Disconnect damper door control cables.
  4. Disconnect blower motor electrical connector.
  5. Disconnect water drain hose and defroster hose.
  6. Remove nuts retaining heater housing assembly to instrument panel. Remove heater housing assembly by tilting heater downward to disengage it from air inlet duct and pulling toward rear of vehicle.
  7. Remove heater core from heater housing.
  8. Reverse procedure to install.

Nov 17, 2009 | 1984 Jeep CJ7

1 Answer

How to replace heater core in a 1988 jeep cherokee?


Jeep Cherokee XJ Heater Core

Work for '92 models, but can use it like a reference guide.

6042054.gif

Figure 1

  1. Disconnect battery ground cable, then drain cooling system.
  2. Disconnect hoses from heater core.
  3. If equipped with A/C, remove evaporator/blower housing as follows:
    1. Discharge A/C system, then disconnect hoses from expansion valve.
    2. Disconnect electrical connector and vent tube from blower motor.
    3. Remove console, if equipped.
    4. Remove lower instrument panel attaching screws, then the lower panel.
    5. Disconnect electrical connections from A/C relay, blower motor resistors and A/C thermostat.
    6. Disconnect vacuum hose from vacuum motor.
    7. Cut evaporator/blower housing to heater core housing retaining strap, then disconnect heater control cable.
    8. Pry retaining clip from rear of blower housing flange, then remove the three retaining screws.
    9. Working from engine compartment, remove evaporator/blower housing attaching nuts, then the evaporator drain tube, Figure 1.
    10. Remove right kick panel, then the instrument panel support bolt.
    11. Pull right side of dash outward, then rotate housing downward and towards rear of vehicle until studs clear dash panel. Remove housing from vehicle.
  4. Remove heater core to housing retaining screws, then the heater core, Figure 2.
  5. Reverse procedure to install.
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Figure 2

Personally, I'd pressure test the cooling system then look at the heater core to see if it leaks. It may just be a loose clamp or leaky hose.

Also can check the forum jpmagazine.com

I hope help you; good luck (remember rated this).

Sep 15, 2009 | Jeep Cherokee Cars & Trucks

2 Answers

Kia Sportage heater core removal and replacement


Hi there,

Here are the steps to remove heater core

1. Chock wheels. 2. Drain the engine coolant. Refer to Engine Cooling System. 3. Discharge and recover the refrigerant from the A/C system. Refer to Recovery/Evacuating/Charging in this section. 4. Remove the dash panel. Refer to Body. 5. Remove the Blower/Evaporator unit. Refer to Blower/Evaporator Unit in this section. 6. Disconnect the low pressure line from the evaporator outlet on the bulkhead. 7. Disconnect the high pressure line from the evaporator inlet on the bulkhead. 8. Disconnect the heater return hose from the heater core outlet tube connection. 9. Disconnect the heater inlet hose from the heater core inlet tube connection. 10. Disconnect the fresh air/recirculation control cable from the blower housing unit inlet duct. 11. Disconnect five connectors at the bottom of the blower housing unit. 12. Pull carpeting away from bulkhead to gain access to the hole cover plate. 13. Remove the four nuts retaining the hole cover plate. 14. Remove the hole cover plate. 15. Remove two mounting bolts at the top of the blower housing unit. d40e96a.jpg 16. Remove two nuts attaching the bottom of the blower housing unit to the bulkhead mounting studs. 17. Remove the blower unit from the vehicle. 18. Remove the temperature control cable from the heater unit servo. 19. Remove the two nuts from the mounting studs at the bottom of the heater unit. 20. Remove the top nut holding the heater unit to the bulkhead to the bulkhead mounting stud. 21. Remove the heater unit. Regards, Jeep Brainy

Apr 15, 2009 | 1997 Kia Sportage

1 Answer

How to repair a 1996 kia sportage heating core


Hi there,

I hope below steps can help ...


1. Drain the engine coolant. Refer to Engine Cooling System. 2. Discharge and recover the refrigerant from the A/C system. Refer to “Recovery/Evacuating/Charging” in this section. 3. Remove the dash panel. Refer Body. 4. Remove the blower/ evaporator unit. Refer to “Blower/Evaporator unit” in this section. 5. Disconnect the low pressure line from the evaporator outlet on the bulkhead. 6. Disconnect the high pressure line from the evaporator inlet on the bulkhead. 7. Disconnect the heater return hose from the heater core outlet tube connection. 8. Disconnect the heater inlet hose from the heater core inlet tube connection.




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9. Disconnect the fresh air/recirculation control cable from the blower housing unit inlet duct. 10. Disconnect five connectors at the bottom of the blower housing unit. 11. Pull carpeting away from bulkhead to gain access to the hole cover plate. 12. Remove the four nuts retaining the hole cover plate. 13. Remove the hole cover plate. 14. Remove two mounting bolts at the top of the blower housing unit. 15. Remove two nuts attaching the bottom of the blower housing unit to the bulkhead mounting studs. 16. Remove the blower unit from the vehicle. 17. Remove the temperature control cable from the heater unit servo. 18. Remove the two nuts from the mounting studs at the bottom of the heater unit. 19. Remove the top nut holding the heater unit to the bulkhead to the bulkhead mounting studs.
20. Remove the heater unit.




Regards,
Jeep Brainy

Oct 25, 2008 | 1996 Kia Sportage

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