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Fan Hub Oil Seal Installation Type 4
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mygreenbus
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PostPosted: Wed Jul 11, 2018 5:15 pm    Post subject: Fan Hub Oil Seal Installation Type 4 Reply with quote

'72, 1700cc. So, I have a leaking fan hub seal. It looks like a job I should be able to do, but when I look at Bentley, it calls for special tools to take the hub plate off and to put the seal back in. Is it really that difficult? Maybe I'm missing something? Thanks.
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SGKent Premium Member
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PostPosted: Wed Jul 11, 2018 5:18 pm    Post subject: Re: Fan Hub Oil Seal Type 4 Reply with quote

it can be done without the special tools but first be sure that your breather isn't plugged.
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Wildthings
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PostPosted: Wed Jul 11, 2018 5:29 pm    Post subject: Re: Fan Hub Oil Seal Type 4 Reply with quote

Also check the oil pressure switch for leaks.
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mygreenbus
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PostPosted: Wed Jul 11, 2018 6:16 pm    Post subject: Re: Fan Hub Oil Seal Type 4 Reply with quote

SGKent and Wildthings, thanks...
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aeromech
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PostPosted: Wed Jul 11, 2018 7:05 pm    Post subject: Re: Fan Hub Oil Seal Type 4 Reply with quote

Sure, the MM always call out for special tools. This job doesn’t require any. Many different things can be substituted. Reminds me of working on my 1991 Toyota truck years ago. There’s an electrical box Located in the engine compartment and they wanted you to use a Toyota special shop tool to jumper two contacts in order to read the flashes on the check engine light. A paper clip worked just fine.
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Tcash
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PostPosted: Wed Jul 11, 2018 9:26 pm    Post subject: Re: Fan Hub Oil Seal Type 4 Reply with quote

VW 185 For pressing off the hub of the fan from the crankshaft
Image may have been reduced in size. Click image to view fullscreen.

Tcash wrote:
Type 4 Fan hub Puller
Image may have been reduced in size. Click image to view fullscreen.


VW 190 For installing the crankshaft seal in the crankshaft on the fan side
Image may have been reduced in size. Click image to view fullscreen.

1. Plastic cap of the appropriate size, with an 8mm hole drilled in the center.
Image may have been reduced in size. Click image to view fullscreen.

2. 8mm bolt long enough to thread into the crank>seal>plastic cap>nut
3. 8mm Nut
4. 8mm Washer
Assemble installation tool as follows.
Bolt>nut>washer>plastic cap>seal
Thread bolt into crankshaft. Then use nut to press the seal in.
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Wildthings
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PostPosted: Wed Jul 11, 2018 10:27 pm    Post subject: Re: Fan Hub Oil Seal Installation Type 4 Reply with quote

A harmonic balancer puller works just fine for pulling the fan hub. Just thread the center bolt in a bit (but not even close to being tight) for something to push against.
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