Octanejunkie's T4R project - 99 SR5 4WD 5-speed

Good on ya for getting the proper crank tool. I Macgyvered a solution with a strap wrench to remove the crank bolt. After I broke it, I dally'd up a tow strap..... real cowboy shit.....lol. Next time I'll get the proper holding fixture for the crank. I knew better, my issue is I have a whole Mac tools box full of specially tools that don't get used very often anymore. I have a hard time justifying some of the specialized stuff now. But it's one of those things you just have to do it. Unless you want to build a toll. I wasted a bunch of time trying Mickey Mouse it.

Pulling the crank pulley ain't bad. Tim's video does an excellent job with the nuance of it. You'll have to play with a bit because it's not hard to bottom out and bend stuff on the puller.

Overall, it's really not a bad job at all actually. In Tim's video, he goes into depth talking about how to get the tensioner tightened back up. Honestly, that's the most challenging part. Playing with it, and finding the right combination of sockets and extensions that you have to access that hard to reach bolt from underneath. Just be patient, and don't cross thread anything on the tensioner. A good headlamp is key here.

I know many people will change the cam shaft seals with the valve covers and the end caps still in place. I had a horrible experience with mine as I broke a cap when I was prying out the seal on the driver head ham fisting it like a moron. I really lucked out as I found a used set of caps on eBay. The part I scratched wasn't on the seal surface so I locked out. I did a plastigauge, and holy shit it was in spec. Definitely dodged a bullet there. I now have the proper seal puller tool, but I'm not sure I'd even use it. That was a shitty experience for me.

If you really want to get rowdy, power flush the entire cooling, system forward and backwards up and down. Run an OEM thermostat. The OEM thermostats are vastly different than the aftermarket ones. I can't help but think there is a reason for that.

Overall, it's not a bad job. The radiator comes out with a few bolts on the shroud and radiator. Has its own hangars even. Super nicely engineered system actually. Probably the easiest radiator I've ever pulled.
 
Good on ya for getting the proper crank tool. I Macgyvered a solution with a strap wrench to remove the crank bolt. After I broke it, I dally'd up a tow strap..... real cowboy shit.....lol. Next time I'll get the proper holding fixture for the crank. I knew better, my issue is I have a whole Mac tools box full of specially tools that don't get used very often anymore. I have a hard time justifying some of the specialized stuff now. But it's one of those things you just have to do it. Unless you want to build a toll. I wasted a bunch of time trying Mickey Mouse it.

Pulling the crank pulley ain't bad. Tim's video does an excellent job with the nuance of it. You'll have to play with a bit because it's not hard to bottom out and bend stuff on the puller.

Overall, it's really not a bad job at all actually. In Tim's video, he goes into depth talking about how to get the tensioner tightened back up. Honestly, that's the most challenging part. Playing with it, and finding the right combination of sockets and extensions that you have to access that hard to reach bolt from underneath. Just be patient, and don't cross thread anything on the tensioner. A good headlamp is key here.

I know many people will change the cam shaft seals with the valve covers and the end caps still in place. I had a horrible experience with mine as I broke a cap when I was prying out the seal on the driver head ham fisting it like a moron. I really lucked out as I found a used set of caps on eBay. The part I scratched wasn't on the seal surface so I locked out. I did a plastigauge, and holy shit it was in spec. Definitely dodged a bullet there. I now have the proper seal puller tool, but I'm not sure I'd even use it. That was a shitty experience for me.

If you really want to get rowdy, power flush the entire cooling, system forward and backwards up and down. Run an OEM thermostat. The OEM thermostats are vastly different than the aftermarket ones. I can't help but think there is a reason for that.

Overall, it's not a bad job. The radiator comes out with a few bolts on the shroud and radiator. Has its own hangars even. Super nicely engineered system actually. Probably the easiest radiator I've ever pulled.

Thanks for the detailed response!

I forgot to include the Lisle sell puller tool, I ordered that a few weeks ago when I found it on sale. I decided my time is worth more than a few hundred in tools I may only use once or twice, plus they are not expensive, so F it - I ain't got no time to fiddly-f around jury-rigging sheet.

That being said, I will do the valve covers at a later date, and I plan to swap injectors, so more time lol and I don't have enough time to do it all plus I like to clean everything thoroughly, so that adds exponentially more time...

Speaking of which, the bottom left front corner (driver) of my engine is filthy and it looks like the leak I'm chasing may not be new, but just increasing. I will post pics but before I crack a bolt I will clean this area as best as possible.

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Yes, but that won't tighten it/torque it lol
Easy...

XDT_8905-01_700x700.jpg


-Charlie
 
Was responding to [MENTION=643801]Romeo1[/MENTION] removal Macgyvering, It's always good to c someone properly re-torquing the bolt.
I've bump-loosened damper bolts in every car I have. The only speciality tool required is a remote starter lol

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It likely won't

I used a long piece of 2x2x.25" angle iron with a cutout for the crank bolt and 2 holes for bolting to the damper.
Loosening it stops on the frame, tightening it hit the ground and allowed me to torque everything up solid.
 
Pinpointing the leak

Here is the bottom, front driver corner of the engine, taken from below (best view) it's obviously very dirty and has probably been leaking an accumulating dirt and dust for a year. Last several wheeling trips have been especially dirty, the entire truck is muddy, but this is the only weep spot
46a90e341f13199333c37c4210cabd75.jpg


I pressurized the cooling system, it took up to 16psi before "the leak" started. It's really more like seepage, and only after the engine has hit operating temperature... My suspicion is that once I turn off the engine, coolant temperature increases, pressure increases, and the seepage occurs. Under normal operating temperatures between 180 to 190°, no leaks occur.

Here is the area where seepage started, circled, under pressure
b7a453158b89dc6893447d919f0764ee.jpg


Without disassembling the front end, it appears that the leak is coming from underneath the front cover, probably the water pump.

I plan to hit that whole bottom corner with degreaser and medium pressure water and see what comes off, and how much is oil soaked versus just coolant and dirt
 
Water pump leaking ? As it's right above the area. How about the thermostat bolts....or the coolant hose hooking from the oil cooler as it's on the back of the water pump next to the thermostat?

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Water pump leaking ? As it's right above the area. How about the thermostat bolts....or the coolant hose hooking from the oil cooler as it's on the back of the water pump next to the thermostat?

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It could potentially be from the thermostat housing, but I would have to remove that to verify. It doesn't look like it's coming from the oil cooler hose outlet in the thermostat housing, it's coming from above and behind the thermostat

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It could potentially be from the thermostat housing, but I would have to remove that to verify. It doesn't look like it's coming from the oil cooler hose outlet in the thermostat housing, it's coming from above and behind the thermostat

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Behind the thermostat housing is the water pump. I had a microscopic seep in the water pump on one of mine before it let loose. It was an aftermarket water pump that gasket or surface failed. Replaced and just did the timing belt job at the same time with all the seals to resolve that issue. :-) (aircabin oem mfg kit)
 
Can you put that UV liquid stuff in the coolant in order to expose where the leak is coming from? Or can you not put it in coolant? I've heard of people using it in their oil to expose oil leaks but it may be a thought to use it in the coolant.
 
Behind the thermostat housing is the water pump. I had a microscopic seep in the water pump on one of mine before it let loose. It was an aftermarket water pump that gasket or surface failed. Replaced and just did the timing belt job at the same time with all the seals to resolve that issue. :-) (aircabin oem mfg kit)
I think I'll have to pull off the timing belt cover/thermostat housing to see any more than I can see now, and obviously I need to clean the area, although the dirt actually allows me to see the weeping pretty easily. According to the sticker on the core support, the timing belt was last replaced about 54k miles ago - I assume the water pump was done at the same time, but you know what they say about assumptions. Not sure what quality parts were used, either.

Can you put that UV liquid stuff in the coolant in order to expose where the leak is coming from? Or can you not put it in coolant? I've heard of people using it in their oil to expose oil leaks but it may be a thought to use it in the coolant.

I'm sure I could, but it's pretty obvious where the leak is generally coming from...
 
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Received the Aircabinman kit yesterday, everything looks good but as someone mentioned on another forum, that kit only includes one idle tension roller for the timing belt, and there are two on our engines...
81adbef9eaca694640c24fadf70fa4e7.jpg


I found the same NSK roller at Yota Shop for $40 shipped, OE #13503-62040
2079d9da34bd3b5b293149968fdedf30.jpg


I suspect it's probably prudent to buy it and replace it while I'm in there...
 
On the kit I bought, both were there. One on the tensioner and the other one between the cams.

Mine we seeping in the middle and didn't go on to the crankshaft, I had a fun time pulling off the timing gear on the crankshaft to change the front main oil seal. :/ I think there are pictures of that in my build thread somewhere.

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Received the Aircabinman kit yesterday, everything looks good but as someone mentioned on another forum, that kit only includes one idle tension roller for the timing belt, and there are two on our engines...
81adbef9eaca694640c24fadf70fa4e7.jpg


I found the same NSK roller at Yota Shop for $40 shipped, OE #13503-62040
2079d9da34bd3b5b293149968fdedf30.jpg


I suspect it's probably prudent to buy it and replace it while I'm in there...
That's the one between the camshafts I believe. :)

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Received the Aircabinman kit yesterday, everything looks good but as someone mentioned on another forum, that kit only includes one idle tension roller for the timing belt, and there are two on our engines...
81adbef9eaca694640c24fadf70fa4e7.jpg


I found the same NSK roller at Yota Shop for $40 shipped, OE #13503-62040
2079d9da34bd3b5b293149968fdedf30.jpg


I suspect it's probably prudent to buy it and replace it while I'm in there...
Looks like it has both in your kit. I see 2 rollers listed.

Sent from my SM-A536V using Tapatalk
 
Received the Aircabinman kit yesterday, everything looks good but as someone mentioned on another forum, that kit only includes one idle tension roller for the timing belt, and there are two on our engines...
81adbef9eaca694640c24fadf70fa4e7.jpg


I found the same NSK roller at Yota Shop for $40 shipped, OE #13503-62040
2079d9da34bd3b5b293149968fdedf30.jpg


I suspect it's probably prudent to buy it and replace it while I'm in there...

There's only an idler and tensioner pulley for the timing belt and both look to be there. Maybe they were missing the ac belt tensioner pulley?
 

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