Water pump replacement-86 Toyota Pickup

[Sarki]

Time to replace the water pump. Haven't done one in years and can't recall the proper procedure on using some form of gasket sealant with the supplied gasket or not. Have a new factory pump and gasket in the garage but don't feel like doing the job 2X because of a screw-up that causes it to leak.
Bit of a PITA job as the truck has power steering as well as A/C to move out of the way.
This is the carbed 22R engine, not that it would make a difference.
If sealant should be used, recommendations on a specific brand would be appreciated.
Couple of pictures for your viewing pleasure!

 

[SMKS]

What does the factory service manual say?

 

[Sarki]

I have the factory manual and it makes no mention at all either way. I think I used some form of permatex gasket cement on other cars in the past but that was lots of years ago and the brain is a bit cloudy these days!

 

[Mike.ASC]

If you clean the gasket surfaces properly and there is no corrosion pitting and the timing chain cover is perfectly flat then no sealer is needed , however I prefer using permatex spray a gasket in the aerosol spray can because it is easy to get a thin uniform coat .

Mike

 

[Sarki]

If you clean the gasket surfaces properly and there is no corrosion pitting and the timing chain cover is perfectly flat then no sealer is needed , however I prefer using permatex spray a gasket in the aerosol spray can because it is easy to get a thin uniform coat .

Mike

Thanks for the advice Mike. Would I being spraying that on both sides of the gasket and then mounting the pump?

 

[brownbagg]

its simple, I have three of them trucks for the last, well since 85. all you got to remove is the fan.

 

[Mike.ASC]

Thanks for the advice Mike. Would I being spraying that on both sides of the gasket and then mounting the pump?

Yes .

 

[Garage5.9]

I personally have put a very thing layer of RTV on the water pump side and laid the gasket on the pump (RTV helps keep gasket aligned as well as fill in any inperfections in the metal) Then i do the same on the other side of the gasket again a very thing coat. Make sure to clean the mating surface really well with a 3m or similar abrasive pad

 

[wornoutoldman]

I personally have put a very thing layer of RTV on the water pump side and laid the gasket on the pump (RTV helps keep gasket aligned as well as fill in any inperfections in the metal) Then i do the same on the other side of the gasket again a very thing coat. Make sure to clean the mating surface really well with a 3m or similar abrasive pad

Silicone is not meant for use as a gasket sealer. It can/will cause the gasket to squish out and ruin the gasket. Using RTV on a gasket has a lubricating effect on it, usually causing the gasket to slip out of place, rendering it useless.

I prefer http://www.gasgacinch.com/gasgacinch_003.htm for most jobs.

 

[cgv69]

Sorry I can't help with your question but I had to comment on your truck...

That's a beautiful old truck! Nice job keeping it that clean and well maintained!

 

[Sarki]

Sorry I can't help with your question but I had to comment on your truck...

That's a beautiful old truck! Nice job keeping it that clean and well maintained!

Thanks for the kind words. The interior is 100% original and in nice shape as well. No cracks in dash and still original seat cover. She has 86K original miles. I try my best to keep it in good shape. Some a-hole took a key to the passenger side a few years back while it was parked at a job location. She still has the original paint so I never repaired the scratches from the key. Has a few minor scrapes and dings here and there but overall she looks nice. These older Toyota's rust like crazy so this one NEVER sees rain/snow as I have alternate vehicles for that. Not a speck of rust on the body, frame or bed....she's my baby!

 

[6768rogues]

I use High-Tac from Carquest. It will stick the gasket on so it doesn't get out of place putting the pump on.

 

[crabjoe]

No need to use RTV or any sealant. Just make sure you use a torque wrench to make sure the pressure is even.

 

[chris142]

be carefull with those 8 or so small bolts. they are a fine thread and screw into the aluminium timing cover.don't take much to pull the threads.I usually put a dab of sealer on the engine side to fill any gaps that my scraper may have left. just a dab smeared withj. my finger! not a huge glob. your supposed to screw it together not glue it.

 

[Kevin C]

While your doing the pump check the condition of your harmonic balancer. The rubber will fail over time. You have low miles on yours but it is a couple of years old.

 

[c/o say]

Permetex hi tac on the waterpump let it set up then place your gasket on the water pump and bolt it on. The hi tac is just used to hold the gasket in place not for sealing thats what the gaskets for. Hi tac comes in a spray or brush on.

 

[cgv69]

She has 86K original miles.

That's amazing for a 25+ year old truck. A friend of mine back in the day had an identical one in red (it was brand new back then) and I use love driving it but for some stupid reason I ended up buying a Nissan "hard body" instead? Wasn't a bad truck but I always wished I had gotten the Toyota.

 

[Tim Kennedy]

Sarki: Truck is virtually identical to one I had -- for me the easiest thing to do was drain & remove radiator/take everything off -- water pump/hoses,etc. Clean all mating surfaces the best you can -- I have small carbide tipped scrappers I use -- clean all surfaces[on the engine as well as the new pump] with alcohol on a rag -- I then put a very thin bead of blue RTV compound on the pump then smear it thin with my finger -- put gasket on the pump, then a thin bead on the engine itself & use finger to get it thin & re-assemble. Cleaning all surfaces for me is the key. I always put new hoses/clamps + new anti-freeze in -- a case of while I'm in there -- better now than broke down somewhere. Oops! - almost forgot -- don't forget to add a can of water pump lube to the coolant too.

 

[Sarki]

Sarki: Oops! - almost forgot -- don't forget to add a can of water pump lube to the coolant too.

Water pump lube....never heard of it but I'll check that out.
Thoughts on anti-freeze? Alloy/aluminum head so I'm thinking to go with the Toyota factory anti-freeze instead of the yellow Prestone from Autozone.
What's the thought on that, worth spending the extra coin for the red long life Toyota anti-freeze as they say it's designed for use with aluminum heads.

 

[camarotoolman]

Nice truck with a carb. The fuely ones are PAIN. i JUST DID THE OIL PUMP SEAL ON MINE, I'd do that too when its all apart. imo.

 

[chris142]

the bearings and seals on your water pump are sealed. there's no reason to add a lubricant to the coolant as it does nothing but contaminate the coolant. if you are working on a 32 Ford that would be different

 

[Mike.ASC]

Most yellow/green coolant/antifreeze now comes in long life that is also compatible with aluminum so I wouldn't pay the "Toyota" price . No need for water pump lubricant on your application since your wp has bearings that are sealed from the cooling system so they are not exposed to the coolant/antifreeze unless there is a bad seal which at that point your wp would need replacing due to a leak .

Mike

 

[Cougar67]

Have you checked out www.yotatech.com ?
There are many threads on the topic. The thing I've taken away from it is that most seem to replace the timing chain and water pump at the same time. Nice truck!

 

[Sarki]

Have you checked out www.yotatech.com ?
There are many threads on the topic. The thing I've taken away from it is that most seem to replace the timing chain and water pump at the same time. Nice truck!

Just took a look at the site you mentioned in your post. That is a great site. Looks like I need to do a bit more than originally planned. The simple water pump replacement will now become a more involved overhaul.
The new plan is to pull the head, send it out for resurfacing (aluminum head), replace the head gasket as well as all the timing components such as the cam gear, chain, tensioner and upgrade to metal chain guides. I'm sure a few other parts will be needed along the way as well.
The problem here is finding the time for this project. May have to hire out as it might be above my comfort level as well as finding the time for this project. I work fire investigations in NE area and this is getting into the busy season.
Looks like the truck will be hibernating in the garage for the winter months.

Any Toyota techs out there in the NY Metro/Dutchess County area looking for a side job!!??

 

[brownbagg]

there no need to have the head resurface unless it has overheated before,

 

[Mike.ASC]

I'm only a short distance away from you in southern Md. If you want to drop it off I would be happy to take care of it for you . I've been in the business for 30 years now and I'm very good at it .

Mike

 

[Sarki]

there no need to have the head resurface unless it has overheated before,

Never overheated and to my knowledge never been removed before. Just thought being aluminum and having it off it would be a good idea to have it checked and resurfaced if needed.

 

[Rust]

Thats in awsome shape.
I had 5 toy trucks and I'm onto an '08 Tacoma.
I traded an '87 in and blew the head gasket (as result of overheating)on the way to the dealership..still gave me the $1000 trade in even though it arrived on a flatbed..lol

I've gotten away with a skimcoat of the copper permatex on both sides of the water pump gasket..to bad i never put in that new thermostat..lol... but I would have used copper permatex there too.