3.9L V8 Water Pump Install on NAS D90 - Defender Source
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  #1  
Old August 21st, 2016, 09:08 PM
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Mike
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Question 3.9L V8 Water Pump Install on NAS D90

This is in reference to a thread I started in the misc section "Well after 21 years..." about my water pump. Maybe these should be merged...
My question is, have those of you how replaced your water pump, how did you clean the female threads in the block behind the timing cover, or did you even worry about it? Will remaining coolant in the threads affect the performance of the thread sealant? I ended getting Permatex High Temp Thread Sealent for the job.


After I puled the pump, I jacked the back of the truck up about 4" to drain out more coolant.
Anyway, looking forward to your comments...


Cheers...
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  #2  
Old August 22nd, 2016, 07:57 AM
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Bill Campbell
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I didnt worry about it. And haven't had any problems with mine leaking. Make sure you have all the bolts in the right order/location. They vary in length as I remember. I made a cardboard cut out that mimicked the gasket and as I pulled the bolts I stuck them in the cardboard in their correct location. Made it easy when putting them back in. Also after I replaced the pump and coolant I had a ton of air in the system that I had to burp.
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Old August 22nd, 2016, 08:13 AM
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Mike
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Question

Good to know, thanks. What thread sealer did you end up using?
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Old August 22nd, 2016, 08:44 AM
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Used cardboard like Bill ... plain old Locktite brand thread sealant. White stuff in a little tube. works like magic
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Old August 22nd, 2016, 09:02 AM
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I've never cleaned the threads when doing a water pump.


x2 for marking where all of the bolts go.
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