well, time to take out the inner box and replace the core today...I think I'm having a big brain fart...but I peered under the dash and can't recall the mounting situation....no bolts visable from the inside...h$ll, I only put the car together 2 yrs ago...

Surely I don't have to unbolt the fan box under the hood????

Must have been that 2 bottles of Shiraz I had last nite....

dave the best way is under the hood. under the dash is really a pain you have a lot more to remove and it is a very tight fit to work in. either way you got work to do.

Agrreed ;), but the core comes out from the dash side, so that box has to come off one way or the other...

not that i know of, it comes out the engine side. think of the extra cost to remove it originally. you have to remove most of the heating unit inside the car and it is a real pain to install that way. to pull it out from the engine compartment is the easiest to get it out

I respectfully disagree...the core is mounted in the inner box, the only passage to the engine compartment is the 2 line connections thru small holes in the firewall.

You take the inner box out to access the core. There are nuts on the studs that stick through the firewall. The same studs and nuts hold both inner and outer boxes on.

yes, thats what i assumed....I'm just worried that there are a few studs under the fender that may be a b!tch....am I correct?

Get back on that sled, put a cold Bud in your hand-see if things are clear then LOL. I have to change mine someday, by-passed for now. My car has a/c and it works! I am sure it will really cause a few profanities, sitting back and sucking down a few bud lights and then hopefully seeing what caused me the problem in the first place. At 6-5 275 lbs. working under the dash will be an adventure. Since I don't use it anyway it may not be soon. My 600 classic calls pretty loud now as we have snow and absolutely awesome trails....

That a boy Rick! Stayed home this wknd....but there is about 16" forecast over the next 2 days up at the lake....likely not much here but I'll be up to the cabin next wknd 4 sure...I still want to buy a new one...have a Summit 500 and the Phazer, which I prefer as its light and fast, but have my eyes on a new yami...

I am balking at snaking my poor ole bod under the dash tonight....going to BBQ and relax...maybe tomorrow!

With your hight/build Rick, getting under the dash requires taking out the seat(s). Heck, with me at 5'8", 135 lbs. it can get uncomfortable and I remove the seat(s) if I have extensive work under the dash. I do have to change the fan motor in the coupe due to the squirrel chatter. But for fan replacement the fender has to come off.

Yah, i was thinking of pulling the seat for what its worth...4 bolts, .......do I really need heat.? LOL

Dave,
Any time I have been under the dash the best way for me was to remove front seats, put a drop over back seat/package tray. Now you can lay comfortably on you back, feet on the top of back seat. While you are working upside down it is comfortable not to be all twisted up. You aren't in the best position to drink your beer but practice, practice, practice and you will become as talented as I LOL. I am starting to think about a new Polaris Turbo but I was told that the new 600's really get about the same mileage and no smoke. Haven't started comparing yet as My 600 now has 7000 miles and hasn't missed a beat since new. Wednesday is coming and that is the day we ride the most, less tourists, fresh groomed trails flat as a bar top. In my area which is a huge Snowmobile destination Every bar has a trail going to it so refreshments are easy to obtain at all times A VERY IMPORTANT thing LOL. A group of guys called the Jerk club meet at a bar (where else) and make a 100 mile or so ride. WE are called Jerks because we are riding and partying while the other half has to work at a job.........

We keep our sleds at the cabin, about 3800 feet elev. We do a bar run to Colemount twice a year, but is a grueling 140 km run, up and ove 7000 feet, crossovers to get on to adjacent logging roads, then down for a Pint at the bar, which caters to bikes and sledders. Usually, we just pack some with us...no need for a cooler

Ok....from what I can determine there are no studs under the fender area that relate to the inner box, so I just remove the visable ones in the engine compartment and drop it out from the inside...whew.

You'll be 'good' if the heads do not turn...... Or 'lucky'...

Technical advice on this board never ceaases to amaze me! Of course the core comes out from under the dash. The problem is that there are 2 nuts on the heater box that are tucked in behind the fender. To remove them you have 2 choices: cut however big a hole in the skirt (that's not an option for me) or you can pull the fender.

The problem around here is that anyone who knows how to work on cars--rather than knowing how to talk about working on cars--is that the mouths have driven them away.

You are talking out your other mouth again Mervyn. Any good service tech knows that it's a three hour job to R&R a heater core in a first gen. Maybe 4 hours if you have AC. And there's no access hole cutting to do. No fender removal needed. For someone who professes that they know what they are talking about you better 'check yourself'. Maybe you were thinking about the blower motor?

I R&R'd mine without cutting any holes... I could reach everything I needed.

I agree, when I sat and thought about it there is no way the studs could be as far over as behind the fender as the inner box stops at or B4 the kick panel

Well I got the firewall bolts off...had to remove the fender brace to get at one of the lower ones. I suppose the best way now is to pull the glove box liner to get at everything and swing it out, as it appears the core tubes somewhat curve in and make it difficult to pull straight back...

Yes, the glove box must come out. I took the glove box door off, too.

Did you get your new heater core yet? Be sure to match it up to your old one. Make sure the tubes are the same, otherwise, you will not be able to install it.

Yes, I got the correct one from Ames, per an earlier thread.