Loctite or Not to Loctite on Water Pump - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 5 (permalink) Old 08-05-2009, 08:03 PM Thread Starter
Pegsmi98
 
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Loctite or Not to Loctite on Water Pump

Ok I have been researching this for two days now and haven't found a conclusive answer. Vehicle is a 2001 Excursion with 7.3 Powerstroke 103K.

I am ordering parts: water pump, upper (go around serp belt) and lower hoses, 203 degree thermostat, thermostat housing. I will thoroughly flush everything out and plan on putting in Cat EC-1 coolant.

Should loctite be put on the Fan Clutch threads when put back on? If so what color?

It sounds like I should put some (loctite) on the bolts (at least the 4 middle ones) when I put the new water pump on. What color?

Also sounds like I can add some sealant around the gaskets, again what color?

If someone could tell me exaclty what to use I can go buy the stuff and go for it.

Thanks in advance.

2001 Excursion LMTD, PSD, 65K, all stock
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post #2 of 5 (permalink) Old 08-05-2009, 11:29 PM
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no loctite anywhere, and also no sealer, the gasket is a rubber o ring.

1996 psd 5speed 4x4 cc 8' bed, 3" body lift, 35's swamped, dp-tuner, intercooled, custom fuel system, no fan, and a few other goodies, 263k. 349.2hp sold
2003 7.3 4r100 4wd sc 8', xlt 20th anniversary edition
stock cept for duals. 260k sarted out as a 2wd xl work tk
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99 v-10 4x4 sc sb auto 275hp gas guzzler
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post #3 of 5 (permalink) Old 08-06-2009, 01:20 AM
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Actually lock tite isn't a bad idea for the pulley bolts. It's not much fun replacing them when they've backed out a little and some break off.

Pat 2000 F250


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post #4 of 5 (permalink) Old 08-06-2009, 01:23 AM
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I like to use a little of the grey silicone on the water pump gasket, basicly just to hold it in place while installing it. I think it is nessicary on the thermostat and water inlet pipe o-rings just becasue they are usually are a little corroded where they seal. the important thing is just dont get carried away with the stuff, a little bit goes a long way.

Ross
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post #5 of 5 (permalink) Old 08-07-2009, 02:01 AM
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blue loctite should be fine, better yet use the blue loctite gel less waste
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