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bigbadblazer 09-17-2018 11:10 PM

New member: Hydraulic fan question
 
Hey guys, newb here. My wife and I recently purchased an already converted 1990 Thomas transit-liner with 8.3 cummins 6cta and allison mt643. We've taken it on a number of trips already and are completely in love with it. Had a hiccup today though... This morning when I started it (luckily from the engine bay), after running for about 1 minute, I gave it a little throttle and the hydraulic cooling fan completely grenaded. I was able to shut the engine off very quickly so the pump was never starved of oil or anything, etc. After a few hours of making a mess and realizing that I'm not used to working on large diesels, I got the motor out and can't find a part number on it anywhere. So my question for you is where do you look up/buy parts from? Google has not been helpful, at least with the search terms I'm using and I need to get one on order. Thanks in advance!:Thanx:

bigbadblazer 09-17-2018 11:15 PM

4 Attachment(s)
Just wanted to add a couple of pictures of our rig.

Brad_SwiftFur 09-17-2018 11:44 PM

Try a Napa, and I don't mean one catering to auto parts. Find a Napa that deals in big truck parts. TruckPro is another possible source.

bigbadblazer 09-17-2018 11:53 PM

Ok, I know of one nearby. Plus it's out now, so I can take it along. Thanks!

Thunderbirdpilot 09-18-2018 05:29 AM

Napa will most likely have what you need, but if not you can just google the parts by the part number or model name and it should show you all the available options. You can also search by make/model/year on buspartswarehouse.com, https://www.truckid.com/ https://midwestbusparts.com/ and of course ebay and amazon



The thing is that it's not necessarily bus-only shops, many truck shops may have the parts for your 1990 Thomas too.

TJones 09-21-2018 11:34 PM

If an auto parts store cant get it try a truck or RV specific shop or parts store. Larger truck repair shops have parts counters and may stock your motor or be able to order it for you.

Ted

TJones 09-21-2018 11:42 PM

Quote:

Originally Posted by bigbadblazer (Post 291173)
Just wanted to add a couple of pictures of our rig.

Also when you get your new motor if you have to move the fittings from the old pump DO NOT OVERTIGHTEN. It looks like the failure may have been caused by the fitting being overtightened.

bigbadblazer 09-21-2018 11:57 PM

So I actually spent two days googling the part number from my service manual and came up with next to nothing. Wound up using a company in New Jersey that was able to spec out a new motor and fiberglass fan for me. Should ship next week hopefully. The price was a bit shocking... $1,500. Hopefully this is the last big repair for a while.

bigbadblazer 09-21-2018 11:57 PM

Quote:

Originally Posted by TJones (Post 291687)
Also when you get your new motor if you have to move the fittings from the old pump DO NOT OVERTIGHTEN. It looks like the failure may have been caused by the fitting being overtightened.

That's what I was thinking as well.

drew78634 09-26-2018 05:08 PM

I feel your pain. When I was bringing my 92 All American home the solenoid unit that diverts hydro oil to the fan went belly up causing my bus to overheat. I was stuck for three days waiting for the $1500 part to come in from Seattle.


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