Once both pins are through the back, and the back is centered on the plastic duct unit, all of the screws can be installed. Before proceeding, I test mounted the back panel with the motor mounted and the fit was good. Disconnect the wire from the blower motor, heater hoses. Remove the nuts from the studs that hold the box to the firewall, don't forget the one behind the valve cover. We believe, we may own diverse thoughts, but, what we do just like to support you in finding more references about jeep heater problems. The four nuts are located as follows: 1 behind the engine valve cover, 2 above the two heater hoses, 3 behind the battery in the upper corner , and 4 below the heater motor and to the right of the small drain.
I ultimately filed off the sharp points where the two motor and electrical connection holes converge. You don't need to drain the whole system as the heater hoses run off the top of the overall system. This works as a secondary drain for the main air intake or for any coolant that may become present in the system due to an unexpected failure of the heater core. Below the fan motor is another small drain on the lower back side of the heater duct work assembly. However, I found the quick way to do this was to have an empty coolant jug on hand and once the heater hoses were disconnected Step 3 at the fire wall, I just let the coolant drain from there into the jug.
Any water that makes it this far will enter the cab right above your radio. Just be careful not to thrash this gasket any more than you have to! Sometimes something simple as replacing the heater blower switch gives you back the control over how much heat is blowing into your cab and makes the drive comfortable again. Place the new heater core into the plastic duct and note that the flap seal is correctly in place. Do not forget to share and love our reference to help further develop our website. Sometimes, this hose has a folded end which sort of serves as a one-way valve - if it's still on the end of the hose! Jeep Heater Problems Mar 09, 2019 - Thank You for visiting our website. All other marks, names, and logos mentioned on this web site are the property of their respective owners.
Compressed air works good to remove all the dust that accumulates inside this unit. This circuit starts by collecting fresh air through the main air intake and directing all of the air over to the passenger side of the Jeep. Also remove the heater vent deflector located above the center hump and the flexible defroster duct on the top. We also have a large selection of parts for the newest Jeep models. Excessive force of pressing the hoses onto these ends can break the solder, causing you to have to start all over again. All parts listed are aftermarket replacement parts. First, remove the fan motor assembly.
There are several small screws that hold the backing plate to the plastic duct. If water does go this far, it should make it into the heater duct work, which has another drain down below the fan motor. Figure if the heater core springs a leak, where will all that coolant go? About 2-quarts is all that the repair manuals recommended. Heater Core Replacement Need To Get Warm Again? Also, in the event one of your heater hoses gets a hole in it, you can cut the hose in half at the hole, and reconnect each end to the fitting with the hose clamps. This unit is held to the front of the heater duct assembly with sheet-metal screws. It was made from a paper-based material that had long since rotted cracked. Step 13 The fan motor can now be attached to the backing plate.
Double-check that the flaps still work by moving the control arms. Pulling the duct assembly out can be kind of tricky. In the normal setting with all the dash knobs in the heat flap is closed located below the heater core, next to the nut-driver with the yellow handle. You may want to attach the two screws that hold the heater core to the back first - to make sure it doesn't move during this assembly step. Now you can reassemble the duct unit. Screw a piece of plywood to the firewall, mark the center of the hole.
If you look inside the engine bay, you'll see a large diameter rubber hose pointing down. Step 9 Once everything is disassembled, all the parts can be cleaned. Note the motor mounting holes can be attached in a variety of ways. It is easiest to start from the small end and work towards the larger side. However, the only electrical part associated with this project is the heater fan motor.
The back of the heater duct assembly has four threaded studs that extend through the firewall. Now the back side of the assembly can be removed. Go inside the Jeep, pull the box back and may have to tilt it down in the rear a little to clear the firewall. Usw a circle template to find the center of the existing hole in the firewall. Make sure you get the information you are looking for. I had mine out in about 15 minutes. You'll also need to detach the heater motor components the electrical plug fitting and the small drain hose.
Because the four studs are extending through the firewall, and because the back of the motor also extends through the firewall, the whole unit needs to be pulled slightly forward first, then down. Don't forget to attach all the nuts on the firewall, and the looped cable ends. The project is fairly straight-forward and should provide you with a little more warmth! Once inside the cowling intake, the air goes through one of two separate channels: the driver's side fresh air intake or the main air intake. We thank you for your visit to our website. Now you're ready to remove the heater duct assembly. . In this case, all the air flows past the fan motor.