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  • Heater box removal help

    Hey guys and gals, I'm working on removing the engine from my 87 Wagoneer. I am tryingto remove the heater box from the firewall, but there are probably two or three nuts that seem to come from inside the passenger compartment. I cannot see the nuts holding it in, they woould be pretty high on the firewall to access easily. Anyone removed it before? The box is gettting replaced, as it has been a mouse house for a few years, but I don't want to damage anything on removal. Any modifications to help ease installation?

  • #2
    I have an '87 Grand Wag that I am parting out and actually still have the heater box and blower as well. I will take some pics of it and post them here so you can see it real simple like. So much easier to see whats what when all the other junk isnt clouding your view. lol
    Originally posted by will e
    Keep in mind. Getting old is easy. Being old is hard.
    Post #14 ~ http://www.ifsja.org/forums/vb/showt...=1#post1580206

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    • #3
      You have to drop (not remove cut or hack) the AC unit, just undo the screws, let it drop down on the floor, (don't undo the hoses or wires, just let it down easy, you can then get at the heater box nuts real easy.


      Mike D.
      -----------------------------------------
      Home of ADHD project list

      1977 J-10 Honcho 360-T15-D20
      1977 Cherokee WT 360-Th400-NP241 true-trac(s)
      1979 Cherokee 4 Door 258-T-18-D20
      1981 Cherokee Chief WT 360-727-NP208
      1972 K20 Suburban 350 SM465 205
      And the other stuff that gets driven
      ----------------------------------------

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      • #4
        Originally posted by mdill
        You have to drop (not remove cut or hack) the AC unit, just undo the screws, let it drop down on the floor, (don't undo the hoses or wires, just let it down easy, you can then get at the heater box nuts real easy. Mike D.
        Well....you can get to it easy.... with a finger that is, but be prepared to be turning a 5/6 wrench 1/4 turn at a time until your wrist cramps...and then some. On mine, there's a bracket that prevents a socket from getting in there.
        Jeepasaurus (Wagonus Grandi quadropedus)
        88 GW 360-.030 over/2150/727/229/Posi, e-pump, AC (broke), tow package, Monroe Air Shocks, TFI, CTO-Free, AIR-free, oil & tranny coolers, dried knuckle blood all over, GM 350 TBI in a box, waiting...
        "You're an FSJ'r when the parts guys memorize your name, phone & credit card#."

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        • #5
          On my 90, you can get a 1/4 ratchet in there and wrench on it all day long. If you drop the air conditioning unit, there's TONS of room.
          90 Grand Wagoneer, 401/727/229, TFI upgrade, MC4350 4V, Edelbrock Performer cam, All-Aluminum Radiator, Razor Conversion, 4" Rusty's all-spring, 31x10.50 BFG TA/KO's...much planned, little time/money, thus she's a PipeDream!
          Status: Up and running, but needs attention....

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          • #6
            Originally posted by Mark Wilde
            On my 90, you can get a 1/4 ratchet in there and wrench on it all day long. If you drop the air conditioning unit, there's TONS of room.
            Something must have changed between 88 & 90. My AC was out. But only ounces of room. Oh well...
            Jeepasaurus (Wagonus Grandi quadropedus)
            88 GW 360-.030 over/2150/727/229/Posi, e-pump, AC (broke), tow package, Monroe Air Shocks, TFI, CTO-Free, AIR-free, oil & tranny coolers, dried knuckle blood all over, GM 350 TBI in a box, waiting...
            "You're an FSJ'r when the parts guys memorize your name, phone & credit card#."

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            • #7
              Originally posted by Rich88
              Something must have changed between 88 & 90. My AC was out. But only ounces of room. Oh well...
              (??) Something must have changed, pretty easy (once the AC has drooped down) on the few I have done.
              -----------------------------------------
              Home of ADHD project list

              1977 J-10 Honcho 360-T15-D20
              1977 Cherokee WT 360-Th400-NP241 true-trac(s)
              1979 Cherokee 4 Door 258-T-18-D20
              1981 Cherokee Chief WT 360-727-NP208
              1972 K20 Suburban 350 SM465 205
              And the other stuff that gets driven
              ----------------------------------------

              Comment


              • #8
                Thanks for the tips, guys. I tried searching, but the search feature says "box" is too vague of a word to search for. The plastic box is toast, I would like to see if anyone makes a metal heater box for these trucks. If not, I'm sure someone here has a partout unit?

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                • #9
                  Some older trucks DID have a factory metal box for the heater box.
                  Ethan Brady
                  1987 Grand Wagoneer, slightly longer than stock.

                  www.bigscaryjeep.com

                  Don't mess with me. I once killed a living hinge.

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                  • #10
                    I think when they changed to open knuckles on the axles they also changed to fiberglass heater boxes.

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                    • #11
                      ~76 (ish) maybe 77 give or take is when they went to the glass boxes.

                      Mike D.
                      -----------------------------------------
                      Home of ADHD project list

                      1977 J-10 Honcho 360-T15-D20
                      1977 Cherokee WT 360-Th400-NP241 true-trac(s)
                      1979 Cherokee 4 Door 258-T-18-D20
                      1981 Cherokee Chief WT 360-727-NP208
                      1972 K20 Suburban 350 SM465 205
                      And the other stuff that gets driven
                      ----------------------------------------

                      Comment


                      • #12
                        Originally posted by 87Gray
                        Thanks for the tips, guys. I tried searching, but the search feature says "box" is too vague of a word to search for. The plastic box is toast, I would like to see if anyone makes a metal heater box for these trucks. If not, I'm sure someone here has a partout unit?

                        I havent seen or heard of anything aftermarket being made outta steel/metal when they have cheaper means like plastic compounds so its cheaper and lighter.

                        IF you are interested I still have the entire set up out of my '87 Grand Wagoneer that is already pulled and ready to ship. You can email me direct : Tigger4x@yahoo.com with IFSJA Heater Box in the subject line. I have pics of it in my parts thread in the Sale section on here along with pics.
                        Originally posted by will e
                        Keep in mind. Getting old is easy. Being old is hard.
                        Post #14 ~ http://www.ifsja.org/forums/vb/showt...=1#post1580206

                        Comment


                        • #13
                          Originally posted by 87Gray
                          Thanks for the tips, guys. I tried searching, but the search feature says "box" is too vague of a word to search for. The plastic box is toast, I would like to see if anyone makes a metal heater box for these trucks. If not, I'm sure someone here has a partout unit?

                          Just as a tip for future reference, the forum search kinda sucks. But you can use Google instead.

                          Just search on google for "heater box removal site:ifsja.org" without the quotes. Works wonders.
                          '10 Chevy Silverado 5.3L - The DD.
                          '81 Jeep CJ-7 Laredo
                          '73 Jeep J2000 - On the perpetual backburner.
                          Texas A&M Offroad

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