Toro zmaster output shaft oil seal

flmike7775 · 06-11-2009, 03:06 PM

Hello,
I have a Toro zmaster with a kohler engine with the rear output shaft that runs the pulleys for the belts which then turns the drives on the 52" deck. theres a oil seal that slides onto the output shaft that has popped out twice after being replaced, happens after mowing for awhile when motor is hot and then sprays oil all over exhaust and back of engine. the first one (original) was made of plastic so i replaced it with a metal one and the same thing happened yesterday. can anyone tell me why it pops out and how to stop it, possibly sometype of sealant? the output shaft bearing seems to be in good condition no wobbeling and turns smoothly, help please this is frustating.

**octaneman** · 06-11-2009, 10:14 PM

Hi flmike7775

For an oil seal to pop it's either not seating properly, the output shaft is scored which spins it loose and cuts the rubber seal, or excessive oil pressure ( too much oil). One way to stop it is to apply silicon on the outer edges of the seal install and let it dry.

06-11-2009, 03:06 PM	#1 (permalink)
flmike7775 Registered User Join Date: Jun 2009 Posts: 1 OS: win xp	Toro zmaster output shaft oil seal Hello, I have a Toro zmaster with a kohler engine with the rear output shaft that runs the pulleys for the belts which then turns the drives on the 52" deck. theres a oil seal that slides onto the output shaft that has popped out twice after being replaced, happens after mowing for awhile when motor is hot and then sprays oil all over exhaust and back of engine. the first one (original) was made of plastic so i replaced it with a metal one and the same thing happened yesterday. can anyone tell me why it pops out and how to stop it, possibly sometype of sealant? the output shaft bearing seems to be in good condition no wobbeling and turns smoothly, help please this is frustating.

06-11-2009, 10:14 PM	#2 (permalink)
octaneman Mentor Join Date: May 2009 Posts: 498 OS: WINXP	Re: Toro zmaster output shaft oil seal Hi flmike7775 For an oil seal to pop it's either not seating properly, the output shaft is scored which spins it loose and cuts the rubber seal, or excessive oil pressure ( too much oil). One way to stop it is to apply silicon on the outer edges of the seal install and let it dry.