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#1
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Fixed Auxiliary Water Pump!!
Just want to share what I did today and clarify how I did mmine...
1984 300D Problem: not getting enough heat. found aux pump was seized when I applied 12vdc to terminals. What I did: removed aux pump assembly from car (disconnected hoses (plugged ends with cork), some coolant spilled to pan on floor). Materials/Cleaners Used: The Works toilet cleaner (mild acid solution) Purple Cleaner (degreaser) Black silicone tube (sealant) Machine oil Contact Cleaner Fine grit sandpaper (I used 400) Goggles for eye protection Nitrile or latex gloves Put on gloves. Dismantled motor (see pics). Removed back plate and slid housing out. Noticed crud and corrosion inside of housing surface. It appears moisture seeped in over the years. Put on goggles. Work in well ventilated area. Coated/squirted housing with mild acid solution to remove lime and crud. Used degreaser (purple cleaner) on armature part. DO NOT USE the mild acid on any part of the armature. Do not mess with brushes nor pull out armature from pump assembly. Let soak for a few minutes. Scrape crud off if necessary. Rinse housing and armature with water. Make sure acid or solution are totally rinsed off. Repeat process if still dirty. Dried all items using shop vac first then hair drier. Sanded armature plates lightly. Sprayed contact cleaner on armature assembly. Reassembled all parts. I lightly oiled the back plate where the shaft goes into. I sealed the joints using silicone to prevent moisture from seeping in the housing. (no real need to mark orientation of housing b4 dismantling as its easy to figure out how to put it back on). Tighten screws and test. Works now. Reinstalled back to car. Test drove and heat is great. Will be rigging up in-line fuse to protect CCU in case motor conks out... I don't know how necessary this is as my aux pump is the orig and my CCU is stil fine.
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the sooner you start... the sooner you'll get done ![]() ![]() ![]() 2007 Honda Accord EX 2007 Honda Accord SE V6 96 C220 97 Explorer - Found Another Home ![]() 2000 Honda Accord V6 - Found Another Home 85 300D - Found Another Home ![]() 84 300D - Found Another Home ![]() 80 300TD - Found Another Home ![]() Previous cars: 96 Caravan 87 Camry 84 Cressida 82 Vanagon 80 Fiesta 78 Nova Ford Cortina Opel Kadet 68 Kombi Contessa Last edited by tobybul; 11-20-2006 at 08:32 PM. Reason: clarify |
#2
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Darn, I thought you fixed the water pump end. Mine was dripping and I never got it to seal. I just replaced it with a brass elbow fitting. No problems with heat, it's like a blast furnace when it gets past 60*c.
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#3
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Nice
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#4
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thats impressive.
I've tried to revive 2 of these seized pumps now. They were beyond repair, I couldn't even get the housing off without causing more damage. |
#5
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I had a seized one on the 1st 300D I owned 5 years ago. I recall trying to take the motor apart but it seemed like it wouldn't come apart like this one.
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DJ 84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012 ![]() |
#6
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me 2. Im glad you got it fixed but i'd also be worried about the plastic ports for the coolant hoses to attach to. they become brittle and break. and that would be potential for a huge coolant leak. there must be an aux pump from a ford or chevy that fits in there for $25 at autozone...
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Paul Benz-less ![]() I need an SDL ! |
#7
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When I took mine apart at the volute end, the seam was sealed by a funny looking teardrop shape o-ring. Mine was leaking from this seam. I guess finding that gasket short of getting on a plane to Sindelfingen will be like finding bigfoot fossils.
Guess I better help the worn o-ring along with some black RTV...
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327K on 1986 W201, 602.911, 722.414 2.5 190D ("The Red Baron") 139K on 1993 W124, 104.942, 722.433 2.8 300E ("Queen") http://farm5.static.flickr.com/4081/...0bb92d3c_m.jpg http://i370.photobucket.com/albums/o...g?t=1325284354 Do not worry about your difficulties in Mathematics. I can assure you mine are still greater. - Albert Einstein take a walk down memory lane... |
#8
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The "funny looking teardrop o-ring just turned out to be a regular o-ring that kept its shape when sitting in the pump for 260K miles. It is a simple fix. No RTV required.
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327K on 1986 W201, 602.911, 722.414 2.5 190D ("The Red Baron") 139K on 1993 W124, 104.942, 722.433 2.8 300E ("Queen") http://farm5.static.flickr.com/4081/...0bb92d3c_m.jpg http://i370.photobucket.com/albums/o...g?t=1325284354 Do not worry about your difficulties in Mathematics. I can assure you mine are still greater. - Albert Einstein take a walk down memory lane... |
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