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Author Topic: Alpha LPW/S water pump sleeve seals  (Read 260 times)

Robert

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Alpha LPW/S water pump sleeve seals
« on: February 16, 2023, 12:19:58 PM »
This probably a silly question but there is no mention of it in the manual. The sleeve 751-40441 between the water pump and cylinder head has two o ring seals shown on the parts list. To get at the inner one do I just waggle the sleeve about and pull the sleeve out? It seems pretty rigid to me. Will it be corroded in?

Robert

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Re: Alpha LPW/S water pump sleeve seals
« Reply #1 on: February 17, 2023, 12:02:04 PM »
The sleeve is item 7 on the water pump drawing. Iím sorry if I misled people itís on the cylinder block not the cylinder head. Itís between the water pump and cylinder block

Diesel Engineering

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Re: Alpha LPW/S water pump sleeve seals
« Reply #2 on: February 19, 2023, 12:55:08 AM »
The sleeve you mention is just a push fit into the block and also the water pump. You normally find that when the water pump is removed the sleeve will stay in the block. Really the only thing holding it will be the corrosion. You just have to work it out which can be very difficult at times.

Robert

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Re: Alpha LPW/S water pump sleeve seals
« Reply #3 on: February 19, 2023, 10:07:02 AM »
So when you overhaul do you get it out and change both seals or leave well alone? From the deathly silence on the forum I wonder if people realise it is there

cobbadog

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Re: Alpha LPW/S water pump sleeve seals
« Reply #4 on: February 19, 2023, 10:18:22 AM »
Hi Robert, I have not ever done one but from previous experience with "O" rings. always fit new ones. It is critical to clean all surfaces up as clean as posible. Any corrosion be treated and depending if there are any pitting or pieces missing will depend what reapir if any is needed. I recently repaired a radiator hose outlet from the head simply using Uneedit or JB Weld product.
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Diesel Engineering

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Re: Alpha LPW/S water pump sleeve seals
« Reply #5 on: February 20, 2023, 12:12:36 AM »
If there is no leak from the area probably best to leave well alone.

wheelMA1

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Re: Alpha LPW/S water pump sleeve seals
« Reply #6 on: March 23, 2023, 06:19:41 PM »
Its just tension held, I would take it out and replace both O rings. Clean up the opening with some steel wool and WD40 or similar. You are probably just getting some rust making the sleeve a little bit difficult to remove. If I am that far in, I am pulling both and replacing. Cheap insurance to me. Its not a part that leaks often.