Separating crank case on 1984 Ez-Go 2 stroke Robin engine.

broakshores · 03-17-2012, 05:12 PM

Hi. New guy here.

One of the two bolts that keeps the crankcase sealed as well as fastens the starter bracket to the engine broke. I bought the cart like this and want to fix it.

Additionally I think the crankshaft seal might be leaking so I want to replace that as well as anything else the good people here recommend while I have this thing torn down.

Right now I'm stuck. The 4 of 5 bolts with heads I can get to are out but I'm unable to separate the crankcase. I'm assuming only 1/2 of the case is threaded. Is there a trick?

Thanks for any help.

Mike.

Dave Box · 03-17-2012, 06:03 PM

Just to be sure, have you removed the cylinder, the clutch and the flywheel?

Dave

broakshores · 03-17-2012, 07:50 PM

Hi. Thanks for quick reply. Clutch was off. Cylinder was off. Flywheel NOT off. Looks old and brittle so didn't want to push my luck.

I got it separated about 3/4" which was enough to reach in with vice grips and twist out the broken bolt. After that I pressed it back together. Hopefully I haven't damaged it any more than it was. The folks that had this before me did not treat it well.

While putting the cylinder back on I broke one of the two compressions rings. :<

Dave Box · 03-17-2012, 08:38 PM

You said in your first post that you needed to change the crankshaft seal. There is also another one behind the flywheel. I would strenuously recommend that you change both as they will have had the same amount of wear. Removing the flywheel requires a two arm steering wheel puller and two long M6 bolts. If you decide to do it and need help, just shout out.

Dave

panelbeatr · 03-18-2012, 06:06 AM

When you install the front seal you might want to peen over the metal on the crankcase around the seal to keep it from popping out - I didn't and mine popped back out when it backfired :-(

03-17-2012, 05:12 PM	#1
broakshores Not Yet Wild Join Date: Mar 2012 Location: SoCal Posts: 7	Separating crank case on 1984 Ez-Go 2 stroke Robin engine. Hi. New guy here. One of the two bolts that keeps the crankcase sealed as well as fastens the starter bracket to the engine broke. I bought the cart like this and want to fix it. Additionally I think the crankshaft seal might be leaking so I want to replace that as well as anything else the good people here recommend while I have this thing torn down. Right now I'm stuck. The 4 of 5 bolts with heads I can get to are out but I'm unable to separate the crankcase. I'm assuming only 1/2 of the case is threaded. Is there a trick? Thanks for any help. Mike.

03-17-2012, 06:03 PM	#2
Dave Box Respect the Cart Join Date: May 2010 Location: Rocky Mount, Virginia Posts: 2,189	Re: Separating crank case on 1984 Ez-Go 2 stroke Robin engine. Just to be sure, have you removed the cylinder, the clutch and the flywheel? Dave

03-17-2012, 07:50 PM	#3
broakshores Not Yet Wild Join Date: Mar 2012 Location: SoCal Posts: 7	Re: Separating crank case on 1984 Ez-Go 2 stroke Robin engine. Hi. Thanks for quick reply. Clutch was off. Cylinder was off. Flywheel NOT off. Looks old and brittle so didn't want to push my luck. I got it separated about 3/4" which was enough to reach in with vice grips and twist out the broken bolt. After that I pressed it back together. Hopefully I haven't damaged it any more than it was. The folks that had this before me did not treat it well. While putting the cylinder back on I broke one of the two compressions rings. :<

03-17-2012, 08:38 PM	#4
Dave Box Respect the Cart Join Date: May 2010 Location: Rocky Mount, Virginia Posts: 2,189	Re: Separating crank case on 1984 Ez-Go 2 stroke Robin engine. You said in your first post that you needed to change the crankshaft seal. There is also another one behind the flywheel. I would strenuously recommend that you change both as they will have had the same amount of wear. Removing the flywheel requires a two arm steering wheel puller and two long M6 bolts. If you decide to do it and need help, just shout out. Dave

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03-18-2012, 06:06 AM	#5
panelbeatr Getting Wild Join Date: Sep 2010 Location: NE KS Posts: 111	When you install the front seal you might want to peen over the metal on the crankcase around the seal to keep it from popping out - I didn't and mine popped back out when it backfired :-(

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