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01-07-2012, 12:13 AM
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#1
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Senior Member
Join Date: Mar 2007
Location: mesa, az
Posts: 1,375
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Generator blower
the blower for cooling the generator was very noisy. my generator has a ton of hours on it and i think the blower is original.
the original is a dayton (grainger) 2C975. it is replaced by a 4TM02. $150.
the old one has brass sleeve bearings. the new one has ball bearings. it came yesterday and was dented so they have another one coming.
i did the same thing on my 1990. you have to cut the mounting plate off and weld it onto the new blower.
hopefully it will quiet things down a lot. the old one was making quite a bit of vibration noise.
later
tom
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01-07-2012, 12:44 AM
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#2
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Senior Member
Join Date: Feb 2010
Posts: 433
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Tom,
Thanks for the part number. Just checked Grainger in my area and all the stores are back ordered. Good to see they replaced the sleeve with bearings. That is an improvement. Mine works good now, but................
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Steve
Newell
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01-07-2012, 01:06 AM
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#3
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Senior Member
Join Date: Mar 2007
Location: mesa, az
Posts: 1,375
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5NRD2 is the one that replaces the 4TM02. it is $211
evidently i got the last 4TM02.
tom
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01-07-2012, 02:04 PM
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#4
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Senior Member
Join Date: May 2006
Location: Houma, LA
Posts: 886
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Tom,
Just curious; how many hours do you have on your generator?
My coach is 14 years old and I have 3500 hours on the generator. That averages about 250 hours per year. I would say that is normal.
I have heard stories that these generators can last up to 30,000 hours before they need an overhaul.
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Tuga & Karen Gaidry
1999 Newell 45 w/2 slides
Coach #512
2005 Pilot
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01-07-2012, 02:41 PM
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#5
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Senior Member
Join Date: Mar 2007
Location: mesa, az
Posts: 1,375
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Hi Tuga,
my generator has 8450 hours on it. remember my coach was owned by two different race teams. they used the generator ALL the time.
It does appear from the receipts that the kubota engine was rebuilt, but the receipts are not clear. i called the WW Williams dealer that did the work and the pulled up the same receipt and said they couldnt tell but that it looed like a a new engine had been put in. the receipt reads like they put a rebuilt kubota engine in it. i think that is the case because the engine sports a new paint job. that was only about 13000 miles ago so i assume about 500-750 genny hours. so if that is the case, the kubota was replaced at about 8000 hours. all of that is speculative based on sketchy receipts.
nonetheless, that blower has a lot of time on it. the biggest thing for me is noise. the bearings on the older blowers are brass sleeves. the new one i got has regular ball bearings. i mean the bearings on the 1" shaft that turns the squirrel cage.
my genny runs great.
later
tom
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01-07-2012, 02:42 PM
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#6
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Senior Member
Join Date: Jun 2011
Location: Home base is Palm Beach, Florida
Posts: 449
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I have 1055 hours in 8 yrs of use
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Larry & Hedy Brachfeld
2003 Double Slide, Detroit 60
Coach # 646
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01-07-2012, 02:48 PM
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#7
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Senior Member
Join Date: Mar 2007
Location: mesa, az
Posts: 1,375
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my 1990 has about 1700 hours. these engines run forever. i think if mine was replaced it was an early failure. it did say some kind of seal was leaking.
at my usage i will never put another 1000 hours on it
i wonder what the life of the genny head is?
tom
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01-07-2012, 10:29 PM
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#8
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Senior Member
Join Date: Mar 2006
Location: Indiana
Posts: 424
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Has anybody tried reworking the fan to accept replacement ball bearings?
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1993 Newell 45'#316, 1976 Trans Am 455, 1967 GTO, 1953 Chevrolet 3105 (panel truck),1952 Chevrolet 3600,1969 Airstream Overlander. Always fixing something!
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01-07-2012, 10:31 PM
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#9
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Senior Member
Join Date: Mar 2007
Location: mesa, az
Posts: 1,375
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i considered it and even asked grainger tech support if the bearings would work on it. but the bearings from them were half the price of a new blower.
i can eat up 140 bucks pretty fast running around looking for things.
tom
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01-08-2012, 06:04 PM
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#10
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New Member
Join Date: Feb 2011
Location: Courtenay, BC , Vancouver Island, Canada
Posts: 4
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A good friend of mine worked "in camp" where they used diesel 7.5KVA and 15 KVA generators for all their power. They ran their gens 24/7, and in the last few years they have been running about 8 hrs/day nad using battery banks. They would have the gens removed for replacement at 25,000 hrs. They would still be working but experience taught them it was more cost effective to replace them rather than using to fail. I don't think that our motor home gens willl last that long due to a lack of use. Mine has 1400 hrs on it
Peter Haggins
96 WB mid door
Wanderlodge
Courtenay, BC
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01-09-2012, 02:52 AM
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#11
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Senior Member
Join Date: Oct 2007
Location: Huntington WV
Posts: 1,041
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Dean,
I looked into putting sealed bearings in instead of the oilite sleeves. I could not find a direct replacement for ID and OD that would work, so I went back with the sleeve replacements from Grainger. I think they were less than twenty bucks.
Interestingly enough, the bearing books say that sleeves are quiter than ball bearings. I don't know that for a fact, just read it when I was researching bearings. I do know that when the sleeves wear, the fan produces a low freq rumble. That went away with new sleeves.
Maybe someday I'll get energetic like Tom and replace the entire unit.
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Richard Rhonda Ty and Alex Entrekin
1995 Newell # 390 DD Series 60, Allison World Trans
Subaru Outback toad
CoMotion Tandem
Often wrong, but seldom in doubt
Rhonda's chronicle https://wersquared.wordpress.com/
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01-09-2012, 02:54 AM
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#12
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Senior Member
Join Date: Mar 2007
Location: mesa, az
Posts: 1,375
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there ya go....with real data instead of my gut feel.
my blower has 8500 hours on it. it is really crusty.
tom
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01-15-2012, 04:33 AM
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#13
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Member
Join Date: Jun 2006
Location: Oklahoma City
Posts: 64
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My 2001 coach's 20KW genset (Kubota 4 cyl) has 4,000 TT. It was a NASCAR coach so they ran the generator. PowerTech, the assembler, calls this generator their 10,000 hour unit but says with proper maintenance, it'll easily go longer. I've a friend in the refrigerated trucking business, he often has way over 10,000 hours on his refrigeration units when he trades trailers. For him the engine is never a concern about reliability, it's the cooling components in his case.
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Barry & Linda Rooker
2001 triple slide, DD60, Allison
Buick Enclave
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01-15-2012, 12:31 PM
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#14
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Senior Member
Join Date: Sep 2008
Location: Thibodaux, LA
Posts: 1,221
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If you think about it a 10,000 hour life span would be roughly 600,000 miles. That's what a properly maintained diesel should do. Mine only has 1750 hours or a bit over 100,000 miles. Many more to go!
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03-04-2012, 01:23 AM
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#15
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Senior Member
Join Date: Mar 2007
Location: mesa, az
Posts: 1,375
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today i put in the new dayton blower. had to drill a few new holes and make some extra screws in the motor bracket to make it stronger. took the steel mounting frame off of the old blower and had it welded onto the new blower. then painted it gray.
of course i broke the windshield wiper fluid pump when i put in the blower. fortunately a new one was only 15 bucks at autozone so i put it in when i was done.
had to play around a bit to get the motor adjusted right. put a new pulley and belt on while i was at it.
when i first fired up the genny there was a horrible rattle, but i found that the electrical box in had put on the side was rattling so i took it off and put foam under it and all was well.
now it is all very quiet.
but as usual, i found that the genny radiator has a pinhole leak so i need to take it out to get it fixed. one thing at a time.
tom
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03-04-2012, 12:34 PM
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#16
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Senior Member
Join Date: Mar 2009
Location: south louisiana
Posts: 654
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No Tom, not "one thing at a time" sounds more like a dozen things at a time!! Looks like your are doing a wonderful job and having fun doing it.......Wish Connie and I could be there to help watch.....
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03-04-2012, 04:35 PM
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#17
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Senior Member
Join Date: Mar 2007
Location: mesa, az
Posts: 1,375
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matt, please come and visit us. coach or no coach. we have plenty of room for you and connie to stay with us.
tom
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03-05-2012, 01:23 AM
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#18
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Senior Member
Join Date: Jun 2009
Location: Idyllwild, CA
Posts: 1,340
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Matt, Did you let Tom know that you are "homeless" yet?
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have Coach will Travel
Steve & Tricia
1982 Newell 38' (built before #1) 6V92 DD, 5 Speed Allison, 12.5 KW Kohler, Couch used to make into a Bed but I fixed it!
https://newellshowcase.com/thumbnails.php?album=214
2007 Yukon, 1981 CJ7 Laredo, 2002 Honda CRV, 1955 Thunderbird, 1952 Pontiac Sedan Delivery, 1952 Ford 8N, 1958 Airstream, 1959 Glasspar 16' Avalon, Cabin in the Woods........what will I work on next
[SIGPIC][/SIGPIC]
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03-05-2012, 01:50 AM
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#19
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Senior Member
Join Date: Feb 2008
Location: Riverside, California
Posts: 1,543
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Tom, for a guy who is a short timer at home you get a lot done. All the repairs you helped me with are going strong, as I would expect. The one I did by myself is going strong too. Really enjoying the LED lights we put in. Looking forward to seeing the progress on your new coach.
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03-05-2012, 01:52 AM
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#20
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Senior Member
Join Date: Mar 2007
Location: mesa, az
Posts: 1,375
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thanks clarke. it doesnt seem like i get all that much done.
jim and gail are coming over for dinner tomorrow nite. it will be good to see them. they are staying out in apache junction for a few weeks.
tom
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