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Old 12-18-2017, 09:39 AM   #421
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Originally Posted by Jolly Roger bus 223 View Post
Sorry man I don't know your engine.?
To me the thermostat housing and the water pump housing is and should be seperate from the timing chain itself and its cover?
Unless your water pump,thermostat housing and timing chain are cast as one piece which might have been an idea but never should have been produced?(my opinion)
Not suggesting it but I have seen mechanics back the bolts out enough to seperate the flanges off of whatever without removing anything. Then they would cut/slot the bolt holes to the inside and snip the bottom(cause that's where the leak will show) clean the fragments off and slip the new gaskets in with a lot of high temp silicone/gasket maker?
I don't do that but I would start with the thermostat housing and thermostat and not the timing chain cover.
If your water pump is above/around/over the timing chain cover then I would look at the weep hole in the bottom of the water pump. If it is that then the radiator fan could be blowing the coolant back onto the top of the timing chain cover and running down?
Good luck
I put up a video to try and better show you where its leaking.
Can't see it in the video, but I can actually see the spot where the water is leaking out. Its right where the front cover meets the water inlet and outlet to the block. On these engines, the front cover has the water pump mounted low and to the left. The water is pumped upwards through a channel in the front engine cover and into the top of the block. The water returns in a channel right next to it.
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Old 12-18-2017, 09:39 AM   #422
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One compressor kicks on and off, the other I don't think is doing anything.
The switches are shagged, but both front and rear blow cool air on all the settings.
To reduce it to one word,: no. The AC doesn't work. It may be within my knowledge to fix it... Except one of my couplers is hooked up to prevent a leaky fitting from leaking!

One of CB's compressors was kicking on and off, along with the condenser fan matching it, so I believe it's hitting a breaker cutoff or triggering a pressure sensor.

The other one wasn't kicking on at all.
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Old 12-18-2017, 09:52 AM   #423
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The dash air, that's the one that wasn't doing anything.
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Old 12-18-2017, 10:11 AM   #424
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That shortie needs wheelie bars and a parachute more than it needs working AC.
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Old 12-18-2017, 10:13 AM   #425
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That shortie needs wheelie bars and a parachute more than it needs working AC.
Lol
and a rad aluminum spoiler!
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Old 12-18-2017, 10:50 AM   #426
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Actually, the down blast type spoilers work great on buses. Helps keep the rear end cleaner. You see them on some of the hi-dollar rigs.
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Old 12-18-2017, 11:16 AM   #427
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I get a manual and look into what's needed to fix it. Probably hand tools and a gasket set. And about 20 hours of work.
Is it the head gasket? Looked like it. It also looks like it has been leaking for a long time if the rust stains on the block are anything to go by.

If you can, do a compression test and a cooling system pressure test.

Compression test will tell you if it's just the coolant part that is leaking. Coolant pressure test will tell you if the cooling system is being pressurized by the engine when it runs.

Either way, yeah, a new head gasket is in your future. When the head is off, have it checked for flatness or you could be doing it again fairly soon.

Good luck. It's hours of work but at least you have access.

An oil sample to Blackstone Labs is a good idea too. They will tell you how much coolant is in the oil, if any.
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Old 12-18-2017, 11:30 AM   #428
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That shortie needs wheelie bars and a parachute more than it needs working AC.
yeah usually short cycling compressors are low freon, on mine the compressors and condensor fans follow each other even in normal operation.

who made those units? are they any of the major brands (carrier, red dot, trans/air, TK)?

where is the video, i was looking for a link to it? for the water leak?
-Christopher
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Old 12-18-2017, 12:43 PM   #429
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Wow, Never saw a ISC in a shor-tay.



Lift up the hood !!!!
Yeah!!! I did good then. Thank you for y'alls help.

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Old 12-18-2017, 12:45 PM   #430
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If that's a shorty in reasonable condition with an 8.3, I'd consider buying it myself.

Is that an auction vehicle?

That's an unheard of setup in a bus. It's a unicorn, even if someone had to make it happen by swapping in the 8.3.

That's a lot like CB finding a shorty with the 466. It's worth fixing up if it needs it. I've got to be curious about how much it would take to buy that shorty.
Robin, you said that I believed in unicorns! I'm so excited that I made a good choice. $4,600, no auction. No rust, diesel, great shape. I'm in love with it!

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