cambelt tensioner

[Akane]

I'm doing the cambelt on the 4E-FE, and kinda baffled by the simple tensioners they have, I have not come across anything like this.

Usually on the MR2, the tensioner has a retracting / extending rod that pushes a roller on a pivot, to reuse you simply slowly clamp it on a vice and put the pin back in.

But the 4E-FE one I see here (I havn't taken it off yet in fear of doing something wrong), is a roller on a pivot point that's PULLED with a visible pull spring, WTF? How do I reuse one of these? How do they work because I took the spring off but the roller won't shift at all (duh). I tried google but no help.

[Jason T]

I'm doing the cambelt on the 4E-FE, and kinda baffled by the simple tensioners they have, I have not come across anything like this.

But the 4E-FE one I see here (I havn't taken it off yet in fear of doing something wrong), is a roller on a pivot point that's PULLED with a visible pull spring, WTF? How do I reuse one of these? How do they work because I took the spring off but the roller won't shift at all (duh). I tried google but no help.

Early style the spring sets tension

Here is a basic how to with tourqe settings you can use

[matt dunn]

sounds the be the same as a normal 4age tensioner.

Undo the bolt in the centre of the tensioner wheel,
the wheel wil move freely back and forth,
and the spring hold tension on the belt.

[Akane]

Oh my god i undone the spring for nothing then.

so the way this tensioner works is that you set the static tension yourself and have the keeper spring there to hold it in place and hope the tension stays?

Cheers guys for the help, doing cambelt on this thing ain't as hard as I thought.

[Lloyd]

No.


You have the covers off so the belt is all sitting there. The tensioner is locked in place by the bolt.

Crack the bolt slightyl loose and the tensioner will pivot, the spring simply holds it against the belt at a set tension.

Pull one side of the belt and the tensioner moves back, tighten the bolt and it will stay there.

Take the old belt off and fit the new one.

Crack the bolt loose and it will tension the belt (well, you'll have to give the cams a wiggle to settle the belt in but you know...)

Tighten the bolt

Tun the engine over a couple of turns and check the belt tension.

[matt dunn]

Oh my god i undone the spring for nothing then.

so the way this tensioner works is that you set the static tension yourself and have the keeper spring there to hold it in place and hope the tension stays?

Cheers guys for the help, doing cambelt on this thing ain't as hard as I thought.

Not really,

if you have the spring off the tensioner will flop backwards and forwards with no belt, pivoting on a small pivot out to the side.

Put the spring on,
push the tensioner back full travel to stretch the spring,
lock the cenre bolt to hold it there,
put the belt on,
loosen the centre bolt and the spring will pull the tensioer against the belt to the correct tension,
tighten the centre bolt again.