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Water pump and timing belt replacement

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Old Jun 10, 2024 | 10:08 AM
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Default Water pump and timing belt replacement

So my water pump is going out and my timing belt was done around 10k miles ago by the previous owner, do I have to replace the timing belt and on my shops computer it says I need a water pump sprocket holder and a pulley holder I was wondering if anyone here has had to use those while doing the replacement for either or both
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Old Jun 10, 2024 | 10:17 AM
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A water pump shouldn't just fail in 10k miles, I would consider that an extremely rare event for this car. I'd be concerned about the health of the belt if that were the case and DID the previous owner actually change it? Did they use a ****ty aftermarket kit? Did you mean they replaced the timing belt but not the water pump? That means they didn't use a kit and nothing else got replaced? Is the water pump even failing? What are the symptoms.

I actually don't know the answer to your question (I've never done it) but hopefully someone else will jump in who does pretty quick.
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Old Jun 10, 2024 | 10:19 AM
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Originally Posted by 400fanboy
A water pump shouldn't just fail in 10k miles, I would consider that an extremely rare event for this car. I'd be concerned about the health of the belt if that were the case and DID the previous owner actually change it? Did they use a ****ty aftermarket kit? Is the water pump even failing? What are the symptoms.

I actually don't know the answer to your question (I've never done it) but hopefully someone else will jump in who does pretty quick.
the water pump wasn’t changed, the timing belt was but the water pump is failing on me now
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Old Jun 10, 2024 | 10:23 AM
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Yikes, just the belt? I would be incredibly untrustworthy of that if it were my car if the previous owner cheaped out like that. I would personally just buy the proper aisin kit and do a full service. Now you know all of the other stuff is changed as well.
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Old Jun 10, 2024 | 11:05 AM
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Originally Posted by 400fanboy
Yikes, just the belt? I would be incredibly untrustworthy of that if it were my car if the previous owner cheaped out like that. I would personally just buy the proper aisin kit and do a full service. Now you know all of the other stuff is changed as well.
I would do this ^^. The difference in Aisin pump vs. Aisin kit is about $80 (Rock Auto). The labor to do either is about the same.
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Old Jun 10, 2024 | 12:03 PM
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Originally Posted by paulo57509
I would do this ^^. The difference in Aisin pump vs. Aisin kit is about $80 (Rock Auto). The labor to do either is about the same.
im doing the whole kit, one of my coworkers said it would be better to do the whole timing kit since the previous owner cheaped out and only did the belt
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Old Jun 10, 2024 | 12:05 PM
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Originally Posted by paulo57509
I would do this ^^. The difference in Aisin pump vs. Aisin kit is about $80 (Rock Auto). The labor to do either is about the same.
im a tech at a firestone but im just starting out and so I called a Toyota that’s close to my house and he said to come by and he would show me what kind of tool he uses
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Old Jun 10, 2024 | 12:14 PM
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http://www.lexls.com/tutorials/engine/timingbelt.html

i don't recall a special tool other than one to hold the crank while you whiz off the bolt.
i wedged an large allen key into the flexplate through the transmission access panel to lock the motor from spinning while removing the crank bolt, no need for any special tools


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Old Jun 10, 2024 | 12:43 PM
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I use the tool shown here to remove the crank bolt:

Then, I turn the crank so that when I attach a breaker bar to the tool, it becomes wedged against the bottom side of the lower left frame (driver's side for USDM)

This allows me to then attach another breaker bar to the crank bolt and remove it
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Old Jun 10, 2024 | 01:43 PM
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Originally Posted by timmy0tool
http://www.lexls.com/tutorials/engine/timingbelt.html

i don't recall a special tool other than one to hold the crank while you whiz off the bolt.
i wedged an large allen key into the flexplate through the transmission access panel to lock the motor from spinning while removing the crank bolt, no need for any special tools
alright cool this is something I was looking for, I’m replacing the whole timing parts aswell while I replace the water pump and needed to know, on Mitchell it was saying that I needed 2 special tools for it so that’s why I was unsure
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Old Jun 10, 2024 | 06:43 PM
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A good impact gun will usually spin it right out even without securing the engine from turning.
You'll typically need to remove the radiator to create enough room for the gun but it's a good idea to remove it anyway to make the entire job more comfortable.
Then there's the good ol' bump start/breaker bar method. Kinda frowned upon by many but I know many of us have done it...

It's sad, even a majority of Lexus dealers will choose to only replace the belt and nothing else.
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Old Jun 12, 2024 | 11:47 AM
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Originally Posted by bradland
It's sad, even a majority of Lexus dealers will choose to only replace the belt and nothing else.
true. it's because they work on an hourly charge "by the book". so they have to work with what the system tells them to do, not necessarily what is right in the long term. or if the customer didn't know you might as well do the WP while in there for slightly more labor.
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Old Jun 12, 2024 | 03:29 PM
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Originally Posted by timmy0tool
true. it's because they work on an hourly charge "by the book". so they have to work with what the system tells them to do, not necessarily what is right in the long term. or if the customer didn't know you might as well do the WP while in there for slightly more labor.
Really? They won't replace the other parts that Toyota says should be replaced? The tensioner and everything else are also really important...

That's just sad.
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Old Jun 12, 2024 | 04:50 PM
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When I bought my first LS the prior owner said his mechanic replaced the water pump when it started leaking but put the same / old timing belt back on. Absolutely moronic.
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Old Jun 12, 2024 | 05:24 PM
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For parts that are buried like a water pump I would use Toyota parts only, not rock auto even if they tell you it's oem. I don't know what year your car is but this is an involved repair for someone just starting out, some are easier than others.
This is a 96 and one of the simplest to do but you'd should have someone with experience close by for when you get stuck...and chances are you will have issues.




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