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Old 10-28-2020, 12:40 PM   #1
adileo
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Default 52 F1 oil seal

Hi guys

Workin on replacing the oil seal. Iím having difficulty getting old one out & the part looks different than whatís up on truck. Is there a cap that covers oil seal? Itís not shown in shop manual.
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Old 10-28-2020, 01:20 PM   #2
51 MERC-CT
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Default Re: 52 F1 oil seal

There are a few different oil seals, which one are you talkin' about?
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Old 10-28-2020, 01:52 PM   #3
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Default Re: 52 F1 oil seal

Thanks- The part number is M-4676.

Is there a deflector / cap over it? If yes is it presses on or screw in. See pic to left above.
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Old 10-28-2020, 02:01 PM   #4
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Default Re: 52 F1 oil seal

The shop manual doesn't show a deflector, just the seal and companion flange.
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Old 10-28-2020, 02:06 PM   #5
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Default Re: 52 F1 oil seal

I know but maybe this rear was changed out. See pic it has a cap - deflector or something I can’t get off....
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Old 10-28-2020, 02:19 PM   #6
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Default Re: 52 F1 oil seal

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changed out mine on my 49 F1-new one looks just like yours
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Old 10-28-2020, 02:25 PM   #7
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Default Re: 52 F1 oil seal

How did get the plate or seal out?

Do I need the deflector if I destroy it getting it out?
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Old 10-28-2020, 03:47 PM   #8
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Default Re: 52 F1 oil seal

drill two hole on opposite sides--run a large sheet metal screw in and pry out seal using the alternate holes. always remember the "edge" of the seal goes against the fluid side
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Old 10-28-2020, 03:53 PM   #9
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Default Re: 52 F1 oil seal

What deflector? Are you asking about the oil slinger that's behind the seal?
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Old 10-28-2020, 04:00 PM   #10
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Default Re: 52 F1 oil seal

No please see pic on left. It’s in front
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Old 10-28-2020, 04:16 PM   #11
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Default Re: 52 F1 oil seal

Does the pic on left show the shield and bearing in place with the axle removed?
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Old 10-28-2020, 04:20 PM   #12
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Default Re: 52 F1 oil seal

Hi no

The pic shows the view with drive shaft, companion flange & nut removed.
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Old 10-28-2020, 04:35 PM   #13
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Default Re: 52 F1 oil seal

Quote:
Originally Posted by adileo View Post
Hi no

The pic shows the view with drive shaft, companion flange & nut removed.
This now becomes a little clearer (it's the pinion shaft seal not an axle seal)
It should pry off utilizing the outer seam.
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Old 10-28-2020, 04:51 PM   #14
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Default Re: 52 F1 oil seal

This from shop manual:
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Old 10-28-2020, 05:35 PM   #15
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Default Re: 52 F1 oil seal

Thanks all! It was confusing that the replacement didn’t look like what I was seeing on the truck. What I’ve gathered is the old original seal had a metal lip. The replacement doesn’t and it’s not needed. So I can now hack at it tomorrow.
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Old 10-28-2020, 06:07 PM   #16
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Default Re: 52 F1 oil seal

Just remember you're messing with the pre-load on the pinion. Need to mark the nut well and be sure it gets back to the same location.
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Old 10-28-2020, 06:23 PM   #17
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Default Re: 52 F1 oil seal

Jerry thanks. I didn’t mark it. The book says tork 140-180.

Two questions. Since I still haven’t removed the oil seal. Should I put the nut and yoke back tork and mark? Or too late and just tork to specs?
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Old 10-28-2020, 06:46 PM   #18
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Default Re: 52 F1 oil seal

I think it's to late to correct it now. For future reference, always mark a pinion nut before you remove it. The torque spec is all you have to go on now, most likely will be ok.
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Old 10-28-2020, 06:59 PM   #19
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Default Re: 52 F1 oil seal

Quote:
Originally Posted by JSeery View Post
I think it's to late to correct it now. For future reference, always mark a pinion nut before you remove it. The torque spec is all you have to go on now, most likely will be ok.
My bad. Thanks!
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Old 10-28-2020, 08:23 PM   #20
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Default Re: 52 F1 oil seal

I would absolutely go with torque to specs rather than the position the nut was in 68 yrs ago when it had brand new bearings. Although you may end up backing off to get the cotter pin in.
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