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1965 YM1 front fork seals

19 May 2020 18:18
sgarvin0711
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1965 YM1 front fork seals #1
I've got the forks all apart, but how do I get the seals out?

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20 May 2020 16:15
Schu
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1965 YM1 front fork seals #2
I can tell you how NOT to remove the fork seals.
Do NOT use an open end wrench as a pry bar.....

Schu

70 Yamaha CT175
71 Yamaha CT175
71 Yamaha JT60
72 Yamaha JT60 (2)
74 Yamaha DT360
75 Yamaha GT80
75 Yamaha DT100
75 Yamaha DT125
75 Yamaha DT175
76 Yamaha DT175
75 Yamaha DT250 (2)
75 Yamaha DT400
76 Honda Z50
17 Yamaha SCR950

"Someday, you'll own some Yamahas"

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20 May 2020 16:22 20 May 2020 16:22 by Schu.
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1965 YM1 front fork seals #3
I ended up buying this seal puller from Revzilla.
It worked better than an open end wrench, but you still need to use caution and make sure you aren't using the opposite side of the seal bore as the leverage point.


Schu

70 Yamaha CT175
71 Yamaha CT175
71 Yamaha JT60
72 Yamaha JT60 (2)
74 Yamaha DT360
75 Yamaha GT80
75 Yamaha DT100
75 Yamaha DT125
75 Yamaha DT175
76 Yamaha DT175
75 Yamaha DT250 (2)
75 Yamaha DT400
76 Honda Z50
17 Yamaha SCR950

"Someday, you'll own some Yamahas"

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20 May 2020 16:51
mdscott
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1965 YM1 front fork seals #4

sgarvin0711 wrote: I've got the forks all apart, but how do I get the seals out?


First welcome. Probably should introduce yourself first.

I think you can use a punch or and screwdriver and knock them out.

Thanks Mark
Roseville, Ca.

'76 Bultaco 143 Frontera
'06 GL1800
'01 KDX220
'68 YG5T 80 Trailmaster
74 DT360
75 Norton
73 CB500K
63 C200
87 PW50
64 McClane Edger

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21 May 2020 00:20
Andy L
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1965 YM1 front fork seals #5
Morning to you sgarvin0711. My DT250B had a bad LH fork seal leak. Originally I thought I'd use my bearing puller slide hammer tool and this is a good way to remove the bearing as it doesnt put any point loading on the 'oh so soft and delicate' thin seal housing lip. My problem was the tool didn't have a large enough collett in the set (34mm dia required for my fork). The answer (via youtube) was ingeneously simple. Just apply heat, I used a paint stripper heat gun on medium heat. Need to heat top of fork housing evenly and hey-presto after about 10min the seal just wiggled out with no effort at all . No distortion to housing, no dis-colouration to surface. To be honest I was sceptical at first but then amazed at how easy it was. Good luck, and hope this helps, Andy.
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21 May 2020 17:18 21 May 2020 17:21 by sgarvin0711.
sgarvin0711
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1965 YM1 front fork seals #6
Thanks Shu. I will take your advice on the wrench. I don't think that will be a problem though as the seal is situated a little further down in the tube. I will pick up the puller if heating doesn't work.

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21 May 2020 17:24
sgarvin0711
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1965 YM1 front fork seals #7
Thanks for the reply mdscott. I did try that already, but may try it with some heat. As far as introductions... I have a 1965 ym1 that was a barn find and has not run since 1980. I am doing a total restore on it. I've never done ANYTHING like it before, so every step is a learning experience.
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21 May 2020 17:30
sgarvin0711
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1965 YM1 front fork seals #8
Thanks Andy L. Actually, all of the replies were helpful. I am going to try a little of each. I will start with the heat, which I was too nervous to try, but you made it sound ok. With it heated up, I will try pounding it out. If that doesn't work, I will get that puller and try that. I'll let you know how it goes.

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22 May 2020 07:29
mdscott
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1965 YM1 front fork seals #9
Send a photo of the seal your trying to remove.

Thanks Mark
Roseville, Ca.

'76 Bultaco 143 Frontera
'06 GL1800
'01 KDX220
'68 YG5T 80 Trailmaster
74 DT360
75 Norton
73 CB500K
63 C200
87 PW50
64 McClane Edger
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22 May 2020 09:10
Mothersbaugh
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1965 YM1 front fork seals #10
"Pounding it out" doesn't sound like a good idea...You may damage the tube.

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