Timing Belt Stepping Off Rb20det

[Jonny P Star]

i recently changed the water pump and now the timing belt is stepping off.

i dont think it is the tension as i have had it both tight and not so tight and it still steps off.

i also cleaned the idler pulley wd40 which made it not smooth like it ate all the grease away. its like when ya spray ya skateboard bearings with wd40 it make them run faster but they get twice as loud and rough like you can feel every grain off dirt in there.

could it also be a streched timing belt?

is there any way to clean and/or grease my idler pulley bearing or replace the bearings.

any help would be much appreciated. cheers jonno

[Fry_33]

Timing belts have been covered plenty of times so start searching and you should find out a lot of info.

Timing belts will always track to one side, it is due to how they are manufactured. One pulley/sprocket is flanged (crank pulley) and stops the belt from tracking off of the pulleys.

If you change the timing belt you should replace the idler bearing and tensioner bearing also, again search and ye shall find.

Just an extra bit of into, the arrows on a timing belt are not crutial but do help line up the installation marks . The other reaon they are there is for when you take the belt off, you re-install it in the with the arrow going the same way.

[Simon-S14]

if the idler is noisy, then its f**ked, this will cause the belt to track off the pulley, Happened to my gf's rb20 when i changed the belt and not the idler.. started tracking off as soon as i started it, so off it all came again had to get a new idler and tensioner.

[BH_SLO32]

Did you remember to install the flat washer which slips over the keyway on the crank before you installed the harmonic balancer? If you forgot to do this, the belt will move forward.

Cheers

i recently changed the water pump and now the timing belt is stepping off.

i dont think it is the tension as i have had it both tight and not so tight and it still steps off.

i also cleaned the idler pulley wd40 which made it not smooth like it ate all the grease away. its like when ya spray ya skateboard bearings with wd40 it make them run faster but they get twice as loud and rough like you can feel every grain off dirt in there.

could it also be a streched timing belt?

is there any way to clean and/or grease my idler pulley bearing or replace the bearings.

any help would be much appreciated. cheers jonno

[Jonny P Star]

alright got new t-belt, new idler and tensioner pulleys, new tensioner spring, got the washer thing on the crannk, and t-belt is still stepping off.

i could have put tensioner spring in wrong maybe. can anyone help. cheers jonno

[Birth]

I put in a new timing belt to find it stepping off. In my case I had put a washer from the tensioner 'behind' the tensioner instead of 'in front' of it. This effectively pushed the tensioner forward a fraction and not lined up properly. Silly but simple.

[lineskee 33]

^^^ agreed, it can come down to having a washer around the wrong way. i had the same issue myself.