1hZ timing belt tension spring

Submitted: Sunday, May 20, 2007 at 11:09
ThreadID: 45678 Views:10346 Replies:10 FollowUps:8
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Gday,

I'm in the middle of replacing the timing belt in my troopy. It is a 92 model 1HZ with 305000 kms.

Ummm how the hell do you get the tension spring out - do you have to have a special tool?

And no doubt I will need to know later so I'll ask now - how do you get it back on!

thanks for any help.

Bj.
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Reply By: Steve from Top End Explorer Tours - Sunday, May 20, 2007 at 11:26

Sunday, May 20, 2007 at 11:26
Hey Black Stump

I have always had someone else do my timing belt, Reason being is if it fails there is some come back.

May I suggest you also change you water pump, tensioner spring and cam shaft seal as this can be done while it's all apart.

I do this as preventative maintenance.

Cheers Steve.
AnswerID: 241156

Reply By: Wayne (NSW) - Sunday, May 20, 2007 at 14:00

Sunday, May 20, 2007 at 14:00
Bj,

Just had a look in the Gregory's, and it does say that the spring is hard to get off and on.
There is a special tool, but they also say that a strong length of wire with a handle on the end would also do the trick.
I know it is a bit late now but like Steve I always get some one else to do the timing belt. In fact it will be done next Friday. Scott should have the piece of wire ready to go.

Wayne
AnswerID: 241172

Follow Up By: Member - Stephen M (NSW) - Sunday, May 20, 2007 at 17:58

Sunday, May 20, 2007 at 17:58
Hi there Wayne, I presume your refering to Scott in Peachtree rd Penrith. Top Bloke if thats who your referring to. Wont say the name of his business on here incase he doesnt want it advertised on the web. Regards Steve M
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Follow Up By: Wayne (NSW) - Sunday, May 20, 2007 at 18:14

Sunday, May 20, 2007 at 18:14
Stephen,

That is the bloke.
Found him through this site.
Funny thing is that he keeps referring the passenger seat in the Troppie as"His Seat" and that he should be in it when ever I go away.

Wayne
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Follow Up By: Member - Stephen M (NSW) - Sunday, May 20, 2007 at 19:01

Sunday, May 20, 2007 at 19:01
Yeah he's member on here, thats how I found him. He will be getting my prado to service now I know hes so close to my work and he's really a nice bloke and really helpfull. Regards Steve M
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Reply By: Member - Hughesy (NSW) - Sunday, May 20, 2007 at 15:27

Sunday, May 20, 2007 at 15:27
I did my old 75 series ute years ago. To get it off I think I either used a pair of pointy nose pliers or a small screwdriver to lever it off. Off is the easy bit getting it back on involved copious amounts of swearing and sweating. You use the same principle that you took it off - lever the hook back over - unless you fluke it it will take atleast a dozen attempts (took me about 50). It certainly isn't easy but once you get it apart and see what you need to do I'm sure you'll find a way to get it back on - would be easier if you could get another set of hands for 2 minutes too. Good luck.
AnswerID: 241179

Reply By: nowimnumberone - Sunday, May 20, 2007 at 15:40

Sunday, May 20, 2007 at 15:40
If your just changing the belt theres no need to remove the spring.
loosen the tentioner bolts use some kind of a lever to lever the tentioner to its weakest point and tighten the bolts again while holding tention.
slip out the belt
replace and set tentioner up
cheers
whole job takes less than half an hour
AnswerID: 241182

Follow Up By: Billowaggi - Sunday, May 20, 2007 at 16:39

Sunday, May 20, 2007 at 16:39
On the 1HZ the bolts do not lock up the tentioner the tentioning unit has a permanent pivot point and the bearing is held against the back of the belt by the spring, this is different to almost all other Tbelt set ups where the spring is only used for the initial tension on the belt then the tensioner is locked in position
Regards Ken.
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FollowupID: 502094

Follow Up By: Black Stump - Monday, May 21, 2007 at 15:24

Monday, May 21, 2007 at 15:24
Yep, tried that and it doesn't work on the 1HZ as Billowaggi says.

cheers
Bj
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FollowupID: 502340

Reply By: Billowaggi - Sunday, May 20, 2007 at 16:32

Sunday, May 20, 2007 at 16:32
Hi, just loosen off and screw out the two bolts that hold the tensioner to the front of the engine [you should be replacing this as well as the belt] the spring will come away and de tension. Now fit the new belt correctly timed with the belt taught on the oppisite side to where the tensioner goes, Fit the tensioner without the spring and torque the bolts and last fit the spring by hooking one end into the hole in the tensioner and stretching the other end on to the hook with a small screwdriver.
Hope this all makes sense.
Regards Ken.

AnswerID: 241196

Reply By: Member - Jiarna (NT) - Sunday, May 20, 2007 at 17:29

Sunday, May 20, 2007 at 17:29
Hi Black Stump

I changed mine recently, and made a special tool for the job. Just grind a groove along the middle of the blade of a small screwdriver, so it won't slip off the pin as you lever the end of the spring over it. Piece of cake then!!

To get the spring off, I used a pair of long-nosed pliers to pull it off. You just have to be a contortionist to get yourself in the right position to get the leverage, unless you have arms like Popeye.

Good luck.
John
Those who say something cannot be done should not interrupt the person doing it.

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AnswerID: 241209

Reply By: obee - Sunday, May 20, 2007 at 19:35

Sunday, May 20, 2007 at 19:35
this remindfs me of my turbo hilux 2001 when I got stuck half way. The mobile mech showed in the end. I had to remove the tensioner and put it in a vice to close it up and put a drill bit through the hole to keep it in. Replace belt, replace tensioner and remove the drill bit.
So easy but it had me beat. $100 dollar lesson but at least I know now.

Owen
AnswerID: 241239

Reply By: Twigiee - Monday, May 21, 2007 at 07:45

Monday, May 21, 2007 at 07:45
I have done this recently - i used a combination spanner (open end) with a small piece of coat hanger sized wire. I made a hook with the wire and looped the other end around the spanner just inside of the open end. I levered the open end of the spanner against the spring braket with the wire hook around the spring hook to pull it back. This method worked easily (first or second go) for both removal and installation.

Twigiee
AnswerID: 241344

Follow Up By: Black Stump - Monday, May 21, 2007 at 15:27

Monday, May 21, 2007 at 15:27
Sound like a good method!
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Follow Up By: Get down &dirty - Tuesday, May 22, 2007 at 13:14

Tuesday, May 22, 2007 at 13:14
Twigiee,
You are correct. No need to dismantle. Lever back using coathanger wire, replace belt and let go! Job done! 20 mins max.

GD&D
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FollowupID: 502495

Reply By: Black Stump - Monday, May 21, 2007 at 15:33

Monday, May 21, 2007 at 15:33
Thanks to all replies.

In the end I used wire cutters to pull the spring off.
To put it on required another set of hands to pull the spring using wire and me to locate the spring back in the hole.

A bit hard first time around but all in all an easy enough job to do yourself.

TIP: To ensure you haven't got the the timing out, when you have finished put the vehicle in 5th gear and push it forward manually by hand. Go far enough to rotate the crack shaft one revolution. If this all goes smoothly then you should be right to turn the key and start the motor. If on the other hand you can't push the car foward it probably means the timing is out and a piston is coming into contact with a valve - DO NOT start the motor in this case..else tears!!
AnswerID: 241402

Reply By: Al-one - Monday, May 21, 2007 at 20:40

Monday, May 21, 2007 at 20:40
Hi everyone,
When I ran out of expletives doing my 80 series I made up a tool using a turnbuckle with a hook to engage the spring at one end and a couple of 'D' schackles at the other end to reach a point near the edge of the inside mudguard in line with the spring direction. I drilled a hole through the lip of the mudguard, drilled a 5mm hole through a 8-10mm bolt, placed it through the hole and put a small 'D' schakle through the 5mm hole and joined the whole lot up and used the turnbuckle to stretch the spring until it was level with the spigot and pushed it across. It seems a long winded explanation but it made the job extremely easy to do then and in the future.
Cheers,
Al-one
AnswerID: 241468

Follow Up By: Member - Hughesy (NSW) - Tuesday, May 22, 2007 at 20:17

Tuesday, May 22, 2007 at 20:17
Al-one, thats what I call "thinking outside the square" well done mate. If it works then there is nothing wrong ith it. ;))
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