Replacing The Large Seal Behind Front Sprockrt

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Headcoats
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Replacing The Large Seal Behind Front Sprockrt

#1 Post by Headcoats » Thu Jul 12, 2018 5:08 pm

Has anyone replaced this seal without having to split the cases :smt017

Let me know :smt041
Cryin' In The Beer Of A Drunk Man

tacky1
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Re: Replacing The Large Seal Behind Front Sprockrt

#2 Post by tacky1 » Thu Jul 12, 2018 7:48 pm

Yep. Pry it out with a screwdriver, Clean up the shaft etc.. Grease the lips of the new seal, I always put a little plastic wrap on the end of the shaft to the lips wont get damaged, Slide in the seal and tap it in till its flush with the case.
1985 RZv500
1984 RZ500 Hybrid
1986 RG500 Walter Wolf
1986 RG500 Skoal Bandit
1984 RZ350
1984 RZ350 Hybrid
1981 RD350LC
1981 RD350LC Hybrid
2009 CR500AF Supermoto 250X
2007 CR500AF 250X
1988 YSR50 (2)
1984 GPZ750 Turbo
1989 VFR750R RC30

RuZty
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Re: Replacing The Large Seal Behind Front Sprockrt

#3 Post by RuZty » Thu Jul 12, 2018 9:18 pm

I've done it more than once as well, as above but it helps if you can find something the same diameter to drive it straight in pushing on the OD.

Headcoats
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Re: Replacing The Large Seal Behind Front Sprockrt

#4 Post by Headcoats » Fri Jul 13, 2018 4:13 am

There must be a knack as I end up distorting the seal !

So it can be done then

Think I need to find something wide enough to drift it in then rather than trying to tap it round the edges
Cryin' In The Beer Of A Drunk Man

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pushstartrearset
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Re: Replacing The Large Seal Behind Front Sprockrt

#5 Post by pushstartrearset » Fri Jul 13, 2018 10:00 am

I've done it a few times by taking a variable speed drill (makita battery powered) and a small drill bit to drill a hole (@ slow speed) in the old seal being very careful and not pressing too hard, so when the drill bit goes through you don't drill into the metal bearing on the other side. I drill 2 holes 180 degrees apart. Then take a wood screw and screw in a tiny bit. Just enough to grab the seal as you don't want to go too far and metal out on the other end. Then pull w/ locking pliers. I tap the new seal in w/ a similar sized socket of matching diameter w/ a plastic coated dead-blow hammer. <--Might find a bit of PVC? (failing the socket) or an old RD400 pipe(rubber seal side) to tap in the new seal? *if i remember correctly*. Would look pretty funny from an observers perspective. Whatever works.
1984 RZ350L (U.S.) Old Toomeys, oil injected!, Y-boot K&N. loctite throttle cable holder on left carb!! , 410 mains, Dynojet needles 2.0 clip, #20 pilot @ 1.5 turn a.s., 240/512 p.v.

kampinguru
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Re: Replacing The Large Seal Behind Front Sprockrt

#6 Post by kampinguru » Fri Jul 13, 2018 10:11 am

You may be able to use a piece of ABS pipe the right size as a drift. Put a piece of wood over the end you are hitting with the hammer.

tacky1
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Re: Replacing The Large Seal Behind Front Sprockrt

#7 Post by tacky1 » Fri Jul 13, 2018 6:00 pm

I just tap them in with a mallet, Bit by bit, easy does it, Never had any probs,
1985 RZv500
1984 RZ500 Hybrid
1986 RG500 Walter Wolf
1986 RG500 Skoal Bandit
1984 RZ350
1984 RZ350 Hybrid
1981 RD350LC
1981 RD350LC Hybrid
2009 CR500AF Supermoto 250X
2007 CR500AF 250X
1988 YSR50 (2)
1984 GPZ750 Turbo
1989 VFR750R RC30

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