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Date:         Tue, 22 Nov 1994 10:17:20 -0500 (EST)
Sender:       Vanagon Mailing List <vanagon@vanagon.com>
From:         huff@dg-rtp.dg.com (Jerry Huff)
Subject:      Re: Thermostat/Too cool

> Gerry Writes: > > My under the rear seat heater is leaking too, so it's important that I get > enough temperature up front to survive while I pull that one out. Is > there a way to replace these? Would a radiator place know what to do with > them?

Based on my experience, I would guess that the bleeder screw is leaking on your rear heater core. I spent quite a bit of time working on mine last spring. The bleeder screw is on the upper left corner of the heater assembly as you face it from the front. When the bleeder screw leaks the coolant will collect inside the black plastic housing that holds the heater core and fan which gave me the impression that the heater core was leaking as well. To make a long story short, I bought a replacement heater core and never installed it. It took a long time for residual coolant to stop dripping from the heater core fins, but when it finally did I was convinced that the heater core was fine. The heater core has plastic caps on either end which makes repairing difficult.

Tips for working on it:

1) Remove the rear bench seat. Makes life much more pleasant. 2) Look for evidence of a coolant trail dripping from the bleeder screw. If present, replace bleeder screw. 3) Disassemble the black plastic housing (requires six hands and five screw drivers :) leaving just the heater core attached to the two heater hoses. 4) Clean up any coolant and let the heater core set on a towel for several days with the flow through valve set open so coolant will flow through the heater core. It probably took 5 days for coolant to stop dripping from my heater core fins. The stuff just will not evaporate. 5) If your convinced that the heater core is leaking drop me some email and maybe we can work out deal with my brand-new-never-been- installed-still-in-the-box heater core.

-- Jerry Huff Data General _____ Brick Unix Development RTP, NC 27709 | |_|_\ on \/ huff@dg-rtp.dg.com (919)248-6277 `0---0' Wheels \/\/


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