GUIDE timing belt and water pump replacement JZZ30 soarer 100K service

[Azzamk2]

so i should put my harmonic balancer back on an set it to " 0 " even if the top marks dont line up and do it that way? and it will still be fine?

[barned01]

curiously, have you marked the belt, and the 3 cogs or are you performing this operation slightly differently?
the reason i ask because once you mark the belt and cogs, then replicate it for the new belt, everything 'should' go back the same as it came off.
so it wouldn't really matter if either the cams were slightly off or the crank was off as your reference points are now the marks on the belt, not whether everything is at TDC.


IF something was out of alignment before you performed this, it will remain the same afterwards as well (ie. will still be out of alignment), but you would check that at the end once the new belt is on and tensioned and you rotate the crank 720 degees to see if everything DOES go back to 12 o clock.

just my thought.

[EldarO]

check the two cam marks are pointing straight up, check the raised keyway of the crank is pointing up, check the belt is tight between the cams, and tight between the left cam and the crank.

[HAVABEER]

i always just set everything back to TDC and work from there rather then trying to go off where i had it

as i always end up bumping or moving the cogs and then it throws it all out.

[Shakotan_Aaron]

Yes rather helpful guide I must say. Just pulled the front of my 1j apart the other night.

Got a question though. The hydraulic tensioner. Do these often wear and need replacing? Is it usual to get a little slack in the timing belt when you turn it back a little anti clockwise? Just working out if I need to replace it now seeing as though its only $133 from toyota :S.

stidnam

im with this guy,

do these need replacing at the 100k??

my 2j only has 78k but im doing this service while it is out....

you may also want to consider replacing the engine rubber mounts and cam cover seals also, at least inspect them for leaks/wear. they do seem to need replacing around now if they haven't already been.

[Azzamk2]

i just did this to my 1j and yes i highly remmend doing the hydrolic tensioner now while its apart! mine was absolutely stuffed to the point it was barely tensioning the belt and my engine had 125,000km. and also good idea to do the cam cover seals they do leak pretty bad when they get hard due to age and heat.

[Shakotan_Aaron]

due to me being poor/tight arse...

is there any reason why i cant use the hydro water pump without the hydro fan? as i dont have the factory fan set-up. will it effect the operation on the actual water pump at all without it being connected or having fluid in it?

[wilbo666]

due to me being poor/tight arse...

is there any reason why i cant use the hydro water pump without the hydro fan? as i dont have the factory fan set-up. will it effect the operation on the actual water pump at all without it being connected or having fluid in it?

Loop fluid to it, don't run it dry.

No issues with doing that.

Cheers
Wilbo

[Shakotan_Aaron]

what type of fluid do you use? powersteering fluid?

[hamgatan]

wish i could give rep a second time for this thread!

on a slightly different note, can the front crank seal be replaced when this is all out or is that an entirely different job?

[Shakotan_Aaron]

5.4 replace with new seal. I put a small bead of oil on the inside of the seal to assist lubrication when reinserting. Be sure to replace the seal square and flush with the face of the block.

dude, what do you think this is??

lol

[hamgatan]

ahh yeah good spot.. shit didnt see that.. rep!+

[Shakotan_Aaron]

no worries, sometimes i cant see for lookin either

[Darkon]

Just wanted to say a big thanks to you for this one mate, just did it on a jzx100 1jz vvti and your guide along with a little LED head lamp where the best bloody things I cold have had for the job made it a 100 times easier

Owe ya big time cheers.

Note: do you mind if I post a link to this on jzx100.com? sure there are a few guys there that would find this extremely handy

[1jz68u]

just started this on my supra 2jz, mostly the same, except my crank bolt WILL NOT F@$#ING move, tried cranking and everything. will try again in the morning.