sj408

iTrader: (6)

hey guys, was messing around under the hood an noticed my timing belt is starting to slip itself off the cam gears, this worries me as i just re assembled the engine a very short time ago.

Anyone know whats causes this? could it be a bad tensioner? its only got like 30k on it.

95SC3T

iTrader: (3)

when you reassembled the motor, did you reuse the old tensioner? If so i would advise you to go change that and new belt. Check all pullys for wear and breakage while in there.

sj408

iTrader: (6)

Tensioner had MAYBE 30k on it brand new from toyota, I guess ill have to take it off and replace them??

xspsi6

iTrader: (31)

He is talking about the Hydro tensioner not the idler pullys.

xspsi6

iTrader: (31)

Also how did you compress it?

sj408

iTrader: (6)

yeah that as well, i forgot how we did it. Think we used a clamp or something. did i mess it up?

lexforlife

iTrader: (7)

when you say you just reassembled the motor , was the timing cog removed and reinstalled . if the timing cog is not 100% on it will produce the results you describe . i use a huge socket the size of the cog and knock it on evenly and squarely to ensure its 100% on .

sj408

iTrader: (6)

Sorry for seeming less than informed, whats the timing cog? got a pic?ill tear it down and see right now

sj408

iTrader: (6)

UPDATE: so guys, i just watched the cam gears while it idled for a few seconds and i dont know if my eyes are playing tricks on me but it lookes as if the exhaust cam gear is wobbly.

and again... what is the timing cog?

lexforlife

iTrader: (7)

this is the timing cog with the reluctor wheel , if its not 100% on and even it will cause the belt to misalign with cam gears

sj408

iTrader: (6)

O, that looks like the cam gear right? So take em off and re seat them?

that must be why one looks "wobbly" right?

lexforlife

iTrader: (7)

no this cog mounts onto the snout of the crank behind the crank pulley itself .. if motor was rebuilt , this would have been removed

sj408

iTrader: (6)

interesting, and these are the type of symptoms id see huh?? would it make the cam gear look wavy?

lexforlife

iTrader: (7)

yes , if gog is not 100%on the snount , it will not line the belt up with the cam gears and the belt will walk off ..came gears tend to be alittle wobbly as ive seen that from time to time .. if its excessive then you have something else going on

sj408

iTrader: (6)

so i got it all ripped down in about a half an hour and turns out the nut on the tensioner pulley was gone, pretty much the only thing keeping the belt on was the dang plastic cover haha