Water Pump and Fan Clutch - My Turn
#11
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DiscoBuckeye (11-15-2019)
#14
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That's what I would have used had I not learned about the Roloc bristle disc. I think I used a razor blade when I helped a neighbor change the water pump on his DII a few years ago.
And another question --- given how much the fan clutch bolts are apparently tightened at the factory, how tightly do you torque them when installing a new fan clutch? I looked but didn't find a torque spec in the RAVE.
And BTW, no need here for drilling or cutting. The $2.17 6mm hex socket did the trick, with the help of a cheater bar on the ratchet handle. Even with that setup it took some bouncing on the cheater bar to crack them loose. I had my foot on the ring around the outside of the fan; I'll inspect it to be sure I didn't crack it in the process.
And another question --- given how much the fan clutch bolts are apparently tightened at the factory, how tightly do you torque them when installing a new fan clutch? I looked but didn't find a torque spec in the RAVE.
And BTW, no need here for drilling or cutting. The $2.17 6mm hex socket did the trick, with the help of a cheater bar on the ratchet handle. Even with that setup it took some bouncing on the cheater bar to crack them loose. I had my foot on the ring around the outside of the fan; I'll inspect it to be sure I didn't crack it in the process.
Last edited by mln01; 11-04-2019 at 05:29 PM.
#15
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Today's update.
I got everything put back together last night, and this evening I filtered the "old" coolant that I drained to change the pump through a towel and refilled the system. (I'd changed the coolant just two weeks before the water pump leak appeared so I reused it.) I took the truck for a short test drive a few minutes ago and all seems well.
Other than removing the old gasket the most difficult part of the job was removing the inlet hose. After 20+ years it was stuck pretty well to the pump inlet. No biggie, but a little frustrating.
I was delayed a couple days wrapping up the job because when I went to reinstall the belt I found it had an 8" split at one place in its length. That was surprising because the belt was only a little over 2 years old with only 13,500 miles on it. And the belt before that one lasted only 14 months and 7,600 miles. The one prior to that lasted 9 years and 61,000 miles. This may be a topic for a new thread, but I don't know why my truck has eaten the last two belts so quickly.
Here are a couple observations about bleeding the cooling system that I don't recall seeing before. Having now bled the system twice in the last four weeks they're fresh in my mind so I decided to share them here.
As I've said here several times I have never had anything but perfect results bleeding the system. I use the method set out in the RAVE. No problems. No "waterfall" noise. But there are a couple of things to note.
I got everything put back together last night, and this evening I filtered the "old" coolant that I drained to change the pump through a towel and refilled the system. (I'd changed the coolant just two weeks before the water pump leak appeared so I reused it.) I took the truck for a short test drive a few minutes ago and all seems well.
Other than removing the old gasket the most difficult part of the job was removing the inlet hose. After 20+ years it was stuck pretty well to the pump inlet. No biggie, but a little frustrating.
I was delayed a couple days wrapping up the job because when I went to reinstall the belt I found it had an 8" split at one place in its length. That was surprising because the belt was only a little over 2 years old with only 13,500 miles on it. And the belt before that one lasted only 14 months and 7,600 miles. The one prior to that lasted 9 years and 61,000 miles. This may be a topic for a new thread, but I don't know why my truck has eaten the last two belts so quickly.
Here are a couple observations about bleeding the cooling system that I don't recall seeing before. Having now bled the system twice in the last four weeks they're fresh in my mind so I decided to share them here.
As I've said here several times I have never had anything but perfect results bleeding the system. I use the method set out in the RAVE. No problems. No "waterfall" noise. But there are a couple of things to note.
- First, when I first drive the truck after having drained the system and refilling, the UltraGauge shows the temp climbing to over 200°F (and under 210°). But it stays there only a few seconds and then drops back to 188.6°. No biggie, and I don't know why it happens, but it can be alarming if you aren't expecting it.
- Next, after my typical ~10-mile test drive following a refill and bleed, the coolant level in the reservoir is always down a little. Maybe a quart or so. Again, no biggie, but it could be alarming if you aren't expecting it.
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Sixpack577 (11-07-2019)
#16
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im really just wanting a back up fan and clutch.
#17
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