Repair Sleeve on front Cranksshaft

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I'm luving it
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Repair Sleeve on front Cranksshaft

Postby I'm luving it » Wed Jul 11, 2018 10:59 am

Recently my front crank shaft seal was replaced and after a 500 miles it was leaking again. I figured it was the seal not making good contact on the sealing surface because of the amount of miles on the truck and that the old seals had worn a groove in the sealing surface. After further inspection I was correct. I purchased the sleeve at OReillys for $28 part number 99254 and the seal for $12 part number 712005 and replaced them. This is the second truck I have done this too and the first is still leak free. I have also used these sleeves for the crankshaft sealing surface with good results. The last two pictures show the groves that had been worn in the surface.
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1982, Diesel, reguler cab, short bed, 5 speed, 2wd, 185/75/14, 2" exhaust, tiny tac, 35-40 mpg.

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JoeIsuzu
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Re: Repair Sleeve on front Cranksshaft

Postby JoeIsuzu » Wed Jul 11, 2018 11:37 am

I think the same issue happens on the rear of the crankshaft, and the camshaft. Good info.

Jack

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Re: Repair Sleeve on front Cranksshaft

Postby 2sk8 » Wed Jul 11, 2018 12:13 pm

Hi I'm luving it.

Great information, thanks for sharing!

When you talk about the amount of miles on the truck. How many miles are we talking about?

Thanks

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I'm luving it
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Re: Repair Sleeve on front Cranksshaft

Postby I'm luving it » Wed Jul 11, 2018 6:46 pm

Good question.....I have no idea the speedometer has been stuck since I got it. Would be nice to know.
1982, Diesel, reguler cab, short bed, 5 speed, 2wd, 185/75/14, 2" exhaust, tiny tac, 35-40 mpg.

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arrowmntdiesel
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Re: Repair Sleeve on front Cranksshaft

Postby arrowmntdiesel » Fri Jul 13, 2018 8:04 am

Brent,

Was there any machining on the crank gear or did that sleeve just slip over the gear? I have at least 4 of those drive gears that are worse than the picture you posted that are really unusable. That could be a solution. Thank you for the post and the part #. Sorry your new seal was still leaking.

Mark
AAS degree Diesel Technology 2014, 10 yrs Isuzu Pup diesels. Owner: Arrow-Mountain Diesel services & Arrow-Mnt Windows, Medford, OR. Love God! One Marriage-One Wife, 2 awesome young ladies as my kids. Happily Married for 25+ years. One Blessed Man!

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I'm luving it
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Re: Repair Sleeve on front Cranksshaft

Postby I'm luving it » Fri Jul 13, 2018 11:12 am

Hello Mark,

I did not do any machining to the shaft. I didn’t feel it was that bad. However several things I’ve read state that if the grove is really bad then it should be filled with some type of filler. There are several YouTube videos about install sleeves.

I do have some concerns with extra length of the sleeve that extends out after installing it on the shaft. When I install it back on the crankshaft I can hear an audaible noise of metal expanding (or something) when tighting it down. I have yet to disassemble and see what is going on and if the extra length gets crushed. I sent a email to National seal about this. I will let you guys know the outcome.

Also the flange that you use to install the sleeve has to be removed prior to finel install or it will rub the oil seal retainer.
Attachments
A490A66D-293F-466E-941E-D56C7898D9FC.jpeg
6D3A2630-5ADE-44D9-84D9-197B7447B46C.jpeg
1982, Diesel, reguler cab, short bed, 5 speed, 2wd, 185/75/14, 2" exhaust, tiny tac, 35-40 mpg.

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I'm luving it
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Re: Repair Sleeve on front Cranksshaft

Postby I'm luving it » Mon Jul 16, 2018 11:04 am

Here is the response provided by Timken on the extra length. I am not going to take it all apart until/if it starts leaking. The other truck I used it in seems to be leak free but it doesn’t have too many miles on it. I’ll update if it develops a leak.
Attachments
CB3CCD99-A0EF-49AE-AD58-AA17AE91C708.jpeg
1982, Diesel, reguler cab, short bed, 5 speed, 2wd, 185/75/14, 2" exhaust, tiny tac, 35-40 mpg.