Seized cross shaft.

Technical topics related to machines powered by Kasasaki motors
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SIIaCanuck
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Joined: Mon Mar 21, 2011 5:24 pm
Location: Central Alberta

Seized cross shaft.

Post by SIIaCanuck »

I've got a cross shaft seized into my rear trailing arm. Penetrating oil, heat, and hydraulic press all applied but three days on, no movement.

Front was easy. Going to add grease zerks on both to prevent reoccurrence and make servicing easier.
Stew

'80 440 Liquifire
'72 292SS Elan
'74 294SS Elan
'73 Evinrude QF (for sale if someone wants one)
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WinnipegStPaul9
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Re: Seized cross shaft.

Post by WinnipegStPaul9 »

I think there's a whole section somewhere on the site about seized cross shafts. We've all been there!!
DA
Feel free to check out our website www.buscobullet.com for restorations or parts.
Matt
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Re: Seized cross shaft.

Post by Matt »

http://www.jdsleds.com/community/viewto ... 4&p=128009

I've used muriatic acid a few times now and some types I get end up needing multiple treatments to eat through the shaft. Don't get the "Green" stuff if they have that at your hardware store, it seems to be less potent. Next time I find a brand that works well I need to write down what it is.
:usa: Matt - JDsleds.com Administrator
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SIIaCanuck
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Joined: Mon Mar 21, 2011 5:24 pm
Location: Central Alberta

Re: Seized cross shaft.

Post by SIIaCanuck »

I'm going to try freezing it and shocking it first. I figure that the aluminum expands/contracts by different amounts. If I can get them down to -20C, that might get the shaft to move. Once it moves, then it shouldn't be hard to get out.
Stew

'80 440 Liquifire
'72 292SS Elan
'74 294SS Elan
'73 Evinrude QF (for sale if someone wants one)
sledhead16
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Real Name: Allan Campbell
Location: Saint Peter MN

Re: Seized cross shaft.

Post by sledhead16 »

A plastic rubbermaid tub, 2 gals of regular muriatic acid NOT deluted at all. Set the arm in so the shaft is completely submerged and get away, LOT's of Dangerous Fumes. Do it outside away from everything, gas is corresive.
1975 340/s Speed Run Sled
1975 340/s I500 #161
1980 Liquifire SN# 4995 From WA Speed Run Sled
1980 Liquifire SN# 4996 From MN
1983 Sportfire
1984 Liquifire Deep Snow Tunnel 4/6 motor
1984 Sprintfire (2)

***Duelling Deere Garage***
sledhead16
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Real Name: Allan Campbell
Location: Saint Peter MN

Re: Seized cross shaft.

Post by sledhead16 »

takes 24hrs, eats shaft gone, replace with another shaft
1975 340/s Speed Run Sled
1975 340/s I500 #161
1980 Liquifire SN# 4995 From WA Speed Run Sled
1980 Liquifire SN# 4996 From MN
1983 Sportfire
1984 Liquifire Deep Snow Tunnel 4/6 motor
1984 Sprintfire (2)

***Duelling Deere Garage***
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427cobra
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Real Name: Eric
Location: Metamora IL

Re: Seized cross shaft.

Post by 427cobra »

Yes the acid works well.

Try threading a socket headed screw into one end of the shaft. Then you can use an air hammer to drive the shaft out. Used along with the (cold/hot shock method) it works everytime.

The socket headed screw contains the air hammer bit when hammering. Use a bit that fits inside the socket head.
Eric A.

"Life is tough, but it's tougher when you're stupid" - John Wayne
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Sprailfire340
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Re: Seized cross shaft.

Post by Sprailfire340 »

427cobra wrote:Yes the acid works well.

Try threading a socket headed screw into one end of the shaft. Then you can use an air hammer to drive the shaft out. Used along with the (cold/hot shock method) it works everytime.

The socket headed screw contains the air hammer bit when hammering. Use a bit that fits inside the socket head.

:think: Can you post a pic as I'm not sure what this setup looks like?
:sled: ME
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