96 ezgo decellaration rattle

gorilla · 02-07-2011, 11:57 PM

electric motor is strong, speed is good. no noise on excellaration or stable cruse speed, just rattles when i let off acc pedal. brakes arnt dragging as i even backed them off, brake drum splines & axcel splines good with 90 lbs torque, wheel bearings no play!i tried to get a parts blowup of the pumpkin and gears to the motor but wrnt in service manuals. could the motor have play in bearings? any help would be great!!!!!!! im close to giving up!!!!!!!!

72volt_ezgo · 02-08-2011, 07:16 AM

Hey gorilla!
I hate to brake it to you but I suspect that your motor splines are on their way out along with the mating splines of the input shaft or whatever the correct term is!
You describe exactly what mine was doing since the day I got it.
From a high speed decel at certain speed range a growling noise would fade in and as rpm decreased it would actually fade out,go away.

Until one day stepped on the go pedal and after the initial jump it just stopped and growled.

Took the motor off and the internal splines of motor and external splines of shaft were licked off.

I fixed it the redneck way by cutting 3 slots in the face of the armature and modified a large nut to have the 3 mating "bumps" going into it and carefully welded the nut on the input shaft of the gearbox.
Installed motor and all is good,no more decel growl either.
(My cart has the motor mounted sideways on top and not on the diff!)

gorilla · 02-08-2011, 05:29 PM

thanks, sounds like i'll have to tear into it and replace gears or break out the welder!! any body elses input would be great before i tear into it!!!!

300 · 02-08-2011, 07:32 PM

I had the exact same problem. Purchased a new input shaft and the noise disappeared. Old input shaft didn't look to bad but installing a new one made a huge difference...

Russ/TN · 02-08-2011, 08:20 PM

I had the exact same symptoms.
New input shaft bearings fixed it!
While you have the motor out though be sure the motor bearings are good
before reassembling.

gorilla · 02-10-2011, 01:36 AM

thanks guys. i dont have a diagram of rear axle or motor. where are the input shaft and bearings located? are they on the motor or on the casing attached to the rearend up at the motor?

rabbitreborn · 02-10-2011, 07:20 AM

on the casing attached to the rearend up at the motor. Pull the motor off and you will see a male splined shaft sticking out of the rear, that is the input shaft. Use snap ring pliers and then pull the input shaft out.

02-07-2011, 11:57 PM	#1
gorilla Not Yet Wild Join Date: Feb 2011 Posts: 33	96 ezgo decellaration rattle electric motor is strong, speed is good. no noise on excellaration or stable cruse speed, just rattles when i let off acc pedal. brakes arnt dragging as i even backed them off, brake drum splines & axcel splines good with 90 lbs torque, wheel bearings no play!i tried to get a parts blowup of the pumpkin and gears to the motor but wrnt in service manuals. could the motor have play in bearings? any help would be great!!!!!!! im close to giving up!!!!!!!!
gorilla Not Yet Wild Join Date: Feb 2011 Posts: 33

02-08-2011, 07:16 AM	#2
72volt_ezgo Gone Wild Join Date: Feb 2011 Location: Florida USA Posts: 162	Re: 96 ezgo decellaration rattle Hey gorilla! I hate to brake it to you but I suspect that your motor splines are on their way out along with the mating splines of the input shaft or whatever the correct term is! You describe exactly what mine was doing since the day I got it. From a high speed decel at certain speed range a growling noise would fade in and as rpm decreased it would actually fade out,go away. Until one day stepped on the go pedal and after the initial jump it just stopped and growled. Took the motor off and the internal splines of motor and external splines of shaft were licked off. I fixed it the redneck way by cutting 3 slots in the face of the armature and modified a large nut to have the 3 mating "bumps" going into it and carefully welded the nut on the input shaft of the gearbox. Installed motor and all is good,no more decel growl either. (My cart has the motor mounted sideways on top and not on the diff!)

02-08-2011, 05:29 PM	#3
gorilla Not Yet Wild Join Date: Feb 2011 Posts: 33	Re: 96 ezgo decellaration rattle thanks, sounds like i'll have to tear into it and replace gears or break out the welder!! any body elses input would be great before i tear into it!!!!
gorilla Not Yet Wild Join Date: Feb 2011 Posts: 33

02-08-2011, 07:32 PM	#4
300 Not Yet Wild Join Date: Dec 2010 Posts: 31	Re: 96 ezgo decellaration rattle I had the exact same problem. Purchased a new input shaft and the noise disappeared. Old input shaft didn't look to bad but installing a new one made a huge difference...
300 Not Yet Wild Join Date: Dec 2010 Posts: 31

02-08-2011, 08:20 PM	#5
Russ/TN Gone Wild Join Date: Jul 2009 Location: South Central Tennessee Posts: 150	Re: 96 ezgo decellaration rattle I had the exact same symptoms. New input shaft bearings fixed it! While you have the motor out though be sure the motor bearings are good before reassembling.

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02-10-2011, 01:36 AM	#6
gorilla Not Yet Wild Join Date: Feb 2011 Posts: 33	Re: 96 ezgo decellaration rattle thanks guys. i dont have a diagram of rear axle or motor. where are the input shaft and bearings located? are they on the motor or on the casing attached to the rearend up at the motor?
gorilla Not Yet Wild Join Date: Feb 2011 Posts: 33

02-10-2011, 07:20 AM	#7
rabbitreborn Gone Wild Join Date: Jun 2010 Location: Central Florida Posts: 2,757	Re: 96 ezgo decellaration rattle on the casing attached to the rearend up at the motor. Pull the motor off and you will see a male splined shaft sticking out of the rear, that is the input shaft. Use snap ring pliers and then pull the input shaft out.

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