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GT33 big end bearing replacing

Old 05-19-2014, 10:17 PM
  #1  
kartika
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Default GT33 big end bearing replacing

Hello OS lovers..

I need to replace the big end bearing on GT 33 gasoline because crashed and drowned in a swamp during a week, I would like to see, cleaning when necessary to replace all the bearings but hard opening pin bearing is retained by some sort of stepped pin that is fitted into crankpin. Anyone know how to remove this pin, is it pull out, screwed out?

regards
Kartika
Old 05-20-2014, 07:48 AM
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Bax
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There is a stop screw on the crankpin that retains the lower end of the connecting rod. It's a left-hand thread, so you turn it clockwise to loosen.
Old 06-30-2014, 10:37 AM
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los36
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Ah, left hand thread ... that helps me!
Would one use loctite when re-installing this screw?
Old 07-02-2014, 07:32 AM
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Bax
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You should not need to use any thread-locking compound.
Old 07-05-2014, 11:08 AM
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los36
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Thanks for the tips. Got going on tearing down my engine again. I've got the screw off and the liner out, but how do I get the rod off of the crank pin? There isn't enough lateral play to slide the conrod more than 1/3 off of the crank pin. What am I missing?
Thanks!
Old 07-07-2014, 06:29 AM
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Bax
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You will need to remove the piston from the connecting rod, first. You'll need some snap-ring pliers, and you may need to grind the tips down to fit into the snap ring. Then, you may also need a screw extractor to grip the wrist pin and pull it out. Once the piston's been removed, it will take some play and wiggling to get the connecting rod off of the crankpin.
Old 07-07-2014, 06:35 AM
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los36
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Ah. I was afraid of that. This is what the plug on the back of the cylinder is for, huh?
Old 07-09-2014, 06:18 AM
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Yep...that's where the wrist pin will come out.

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