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how to replace the small coolant hose at the water pump


JohnnyWadd
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This is one method that lets you do this repair without pulling the water pump and will loose a lot less coolant this way.

First remove the old hose. Here a set of locking pliers aka vise grips will help hold those spring clamps open...

 

http://i1187.photobucket.com/albums/z388/starionkiller/starion%20bypass%20hose%20how%20to/th_SAM_1991.jpg

 

Slide both clamps back onto the metal tube. This way you will be able to get right back on them with a pliers later

 

Slice the old hose with a razor blade...

http://i1187.photobucket.com/albums/z388/starionkiller/starion%20bypass%20hose%20how%20to/th_SAM_1985.jpg

http://i1187.photobucket.com/albums/z388/starionkiller/starion%20bypass%20hose%20how%20to/th_SAM_1986.jpg

 

Next up you want to free the metal tube so you have room to install your new hose. Loosen this clamp...

http://i1187.photobucket.com/albums/z388/starionkiller/starion%20bypass%20hose%20how%20to/th_SAM_1993.jpg

http://i1187.photobucket.com/albums/z388/starionkiller/starion%20bypass%20hose%20how%20to/th_SAM_1987.jpg

 

Yes it is harder with the exhaust manifold installed, but a good 1/4 inch drive extension with a u-joint like in the picture will make easy work of this.(Also a gear wrench will work awesome for this step) You may choose at this point to completely remove the bolt for the clamp for even more room. But you don't not HAVE to because the tube will slide backwards in the loose clamp one you do this next step...

 

Remove the other bolt that hold the tube..

http://i1187.photobucket.com/albums/z388/starionkiller/starion%20bypass%20hose%20how%20to/th_SAM_1988.jpg

 

Now the tube will have quiet a bit of free play and you can slide your 5/8" hose over the water pump...

http://i1187.photobucket.com/albums/z388/starionkiller/starion%20bypass%20hose%20how%20to/th_SAM_1989.jpg

 

Next grab the tube and push it into the hose...

http://i1187.photobucket.com/albums/z388/starionkiller/starion%20bypass%20hose%20how%20to/th_SAM_1990.jpg

 

Almost done. Grab the spring clamps and slide them into postion...

http://i1187.photobucket.com/albums/z388/starionkiller/starion%20bypass%20hose%20how%20to/th_SAM_1992.jpg

 

When sliding the tube into the hose, watch that you do not insert to far or the tube will rub near the back of the block by the heater core hoses. The heater core hoses can all stay attached during this.

Edited by JohnnyWadd
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http://www.boating.com/files/cache/ultra-copper-rtv-silicone-gasket-maker_3e9b9131b2ffbc2e59c9a1bb09a0d397.jpg

nice write up.

how well does the RED RTV hold up

to the exhaust heat?

 

I wouldn't know.Good I would guess. But the package says 500 degrees. If you mean the copper stuff in my pictures it works awesome. It claims 700 degrees.

 

Item Description

 

Permatex Ultra Copper Silicone Gasket Sealant

 

The most advanced, high temp RTV silicone gasket available. Highest operating temperatures for 4-cylinder, turbocharged or high-performance engines

Sensor-safe, low odor, noncorrosive. superior adhesion

Three times more oil resistant than conventional silicones; eight times more flexible than cut gaskets

Temperature range -75°F to 700°F

Edited by JohnnyWadd
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