Author Topic: NLA Poulan Parts 2700-3600 3450-3750 PP330-380 Crank Seals etc  (Read 5376 times)

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Offline 3000 FPS

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Ok here we go.   
The first picture is of the all rubber metric seal.   I think it is a winner and I was going to air leak check the crank case but do not have my block off plates here.

Second picture is the all rubber metric seal installed.   I lubed it up real good with some 2 cycle oil and it went in easy peasy.

The third picture is the SKF 5966 seal.   You can see how much wider it is.

The fourth picture is the SKF 5966 after I cut it down to fit.    I could have taken off a little less in the width and I think it still would have worked, but still plan on installing this on the flywheel side. 
PP 505, 475, 445.

Offline Cut4fun

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How did you cut the bigger seal down?  Also let us know if the rubber one passes the leak test.   Good info.

Can you show me a pic of the inside part of the rubber seal, part facing in toward crankcase?

Thanks for all you guys do finding this stuff.

Offline 3000 FPS

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I do not have a pic of the inside of that seal before I installed it.
The other seal I cut with my foredom flex shaft and a small cut off wheel.
PP 505, 475, 445.

Offline Eccentric

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Great work Roger.  The 380 I'm working on has an air leak, so I'll be picking up seals for it soon.

Offline Eccentric

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Also.......are you guys using the 530031115 oil pump drive worm puller?  I need to remember to order one of those too.

Offline Cut4fun .

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Also.......are you guys using the 530031115 oil pump drive worm puller?  I need to remember to order one of those too.

Yes bottom right in pic.   It also works on some jonsered 490 gears and other saws.  490 there was 2 different gears used. Coarse and fine.


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Which  part number used was the rubber one?   


Offline 3000 FPS

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Yes Aaron I used the gear puller like the one Kevin is showing.

Kevin there was no part number when I got it.  I just put 15x35x5 on eBay and it came up $3.14 plus the shipping.
PP 505, 475, 445.

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was it this one single lip?

http://www.ebay.com/itm/Metric-Oil-Shaft-Seal-15-x-35-x-5-15x35x5-15mm-x-35mm-x-5mm-Single-Lip-/161113962093?pt=LH_DefaultDomain_0&hash=item258323f66d&rmvSB=true



Single Lip - Rubber Coated w/ Spring

DIN: 3760 Standard
Other Known Types: SC, A, BA, WA, DG, CB, HMS4, Type 35, Model 92, 827N
Materials: Nitrile (NBR)
Spring Make: Standard Carbon Steel

Pressure Rating: Max 7psi
Temp Range: -40 deg F to +248 deg F

Mounting: Press-fit
Comments: Rubber covered O.D. improves sealing ability at the housing, and is kind to softer materials.This style will hold up in low-pressure applications.


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What do they consider low pressure?  Wonder what a chainsaw crankcase pressure is running wot cutting?

Mounting: Press-fit
Comments: Rubber covered O.D. improves sealing ability at the housing, and is kind to softer materials.This style will hold up in low-pressure applications.

 

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