4ZE1 timing belt replacement

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Re: 4ZE1 timing belt replacement

Postby batman » Sun Apr 25, 2021 9:55 pm

Thanks for the part number.
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Re: 4ZE1 timing belt replacement

Postby dankly1 » Mon Apr 26, 2021 4:34 am

This is a great thread! Going to come in very handy when I change Suzie's belt in a few months.

Cheers
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Re: 4ZE1 timing belt replacement

Postby islandscrub » Mon Apr 26, 2021 12:19 pm

batman wrote:If it hasn't slipped then putting the stripe Dsuzu recommended would be a good idea. I'm going to check my balancer and mark it just in case.


I took a quick look at the balancer and it definitely has some chips missing from it, I can't even really see the timing mark anymore. Probably time for a new one!
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Re: 4ZE1 timing belt replacement

Postby batman » Mon Apr 26, 2021 1:02 pm

I agree.
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Re: 4ZE1 timing belt replacement

Postby islandscrub » Wed Apr 28, 2021 3:18 am

DSUZU wrote:
djangofly wrote: I have heard the rumors of the balancers slipping, but this is kind of absurd

Two of the main causes of balancer failure are fatigue from age and heat and overtightening the belts. Tight belts cause the rubber section to constantly flex, weaken, and fail.
I recommend painting a stripe from the center hole to the outer pulley. This will always be easily visible and any slippage will cause the stripe to be misaligned. Dennis


Dennis,

Any tips on what 'tight enough' should be? The manual says about 10mm at the widest spaced point on the belt, but even this seems a bit tight to me. My PS pump is/was making a bit of a whir and wondering if my belt is too tight.

Mahalo!
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1994 Isuzu Pickup 4x4
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Re: 4ZE1 timing belt replacement

Postby djangofly » Sat May 01, 2021 4:17 pm

Does anyone have the accessory belt routing diagram for an 89 LS with power steering and A/C? I plan on having this completely finished tomorrow.

Also, I am not a fan of the OEM hose clamps. I find them really hard to use, and naturally, broke one. In any event, new cut to fit upper and lower radiator hoses are installed at least.
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Re: 4ZE1 timing belt replacement

Postby batman » Sat May 01, 2021 9:29 pm

I'll try to post a picture of my 2.6,4ze1 on the engine stand with belt routing. The smog pump has been deleted.
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Re: 4ZE1 timing belt replacement

Postby djangofly » Sat May 01, 2021 10:09 pm

Good looking engine!

Thanks, that is helpful. I only took pictures from above and the angle is kind of tough to pick put detail.

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Re: 4ZE1 timing belt replacement

Postby batman » Sat May 01, 2021 11:55 pm

Your welcome, hope this helps- Batman!
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Re: 4ZE1 timing belt replacement

Postby djangofly » Wed May 05, 2021 1:59 pm

Draincock arrived and appears to be a match. If yours is yellow, I would suggest ordering a new one now as these ship from overseas.

Image

If you are desperate for a replacement in short order, this bolt with a rubber washer will fit. Not a common size or thread count, FYI:

Image

Will finish the belts in the next couple days and then it is fingers crossed this thing better start time.
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Re: 4ZE1 timing belt replacement

Postby islandscrub » Wed May 05, 2021 2:05 pm

The draincock you got has a nice deep channel. The one that came on my replacement radiator has a piddly little one and it takes FOREVER to drain. I'd pull it out full flow but I have curious dogs I want to keep safe.
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Re: 4ZE1 timing belt replacement

Postby djangofly » Wed May 05, 2021 2:59 pm

I am just glad I was able to obtain the correct replacement - I wish I hadn't filled the radiator with the temporary bolt in there though. Going to be fun swapping that out!
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Re: 4ZE1 timing belt replacement

Postby DSUZU » Wed May 05, 2021 4:16 pm

FYI, for draining radiators (which I had to do a few times on my Spacecab). I use the small black plastic mortar mixing tray / pan from Home Depot or any other box store (a clean one). They are big enough to catch most of what comes out and even most of the drips that run along the frame or steering components. Then they are light and flexible enough to pour the contents into a proper container. If reusing the coolant, I pour through an old hand towel to catch any debris. Dennis
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Previously owned: 1987 Trooper II LS, 1989 Trooper (parts only), 1994 Trooper 3.2 Auto, 1997 Rodeo 2.6 5 speed, 1993 shortbed pickup 2.3 (project - sold) 1992 Rodeo 4x4 LS (parts car, devoured by Spacecab needs) plus some 70 plus other non Isuzu vehicles over the years. 1994 Amigo devoured to provide head and EFI system.
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Re: 4ZE1 timing belt replacement

Postby batman » Wed May 05, 2021 8:54 pm

Thanks for the info!
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Re: 4ZE1 timing belt replacement

Postby djangofly » Sat May 08, 2021 1:32 pm

Belts are in and everything is running like a top. Thanks for all of the assistance, everyone!

Ended up with an unintended radiator flush, new upper and lower hoses, draincock (to be installed as temp. bolt fix is holding fine). Along with the recent valve adjustment and replacement of virtually all of the vacuum hoses, I think this is it other than cosmetic stuff and basic maintenance for awhile!

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Re: 4ZE1 timing belt replacement

Postby batman » Sat May 08, 2021 8:41 pm

Glad you got it fixed-Batman!
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Re: 4ZE1 timing belt replacement

Postby djangofly » Sun May 09, 2021 4:53 pm

For bonus points, I topped off the dead AC today with a can of 134a and it actually works!
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Re: 4ZE1 timing belt replacement

Postby batman » Sun May 09, 2021 7:47 pm

Nothing like having ac this time of year!
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