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12-31-2014, 03:58 PM
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#1
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Senior Member
Gulf Streamers Club
Join Date: Mar 2011
Location: Central Texas
Posts: 3,796
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Cummins B5.9 exhaust gasket--$7000
Does $7000. sound about right? I have a Cummins B5.9 mechanical 12 valve that had exhaust manifold leak. Took to service company and they replaced with new manifold and gasket, $1162. Couple of weeks later, after two short trips totaling 300 miles, still showing smut from leaking. Took back, now it seems that one of the tabs on head that the exhaust manifold bolts into is broken and I need a new head! They said it was probably a manufacturing defect in head from 23 years ago and it just now broke because of the stress of installing a new exhaust manifold. OK, this is one of the possible explanations of what happened. So I find a new head for $621 delivered to shop. Thermostat, exhaust and head gaskets, and other parts were $1000.00. Mechanic that did R&R turned in 49 hours of shop time and took 14 weeks. Service writer said that too many hours and only charged 43 hours at $100 per. That was about $7083. Sounds about right huh?
AB&T Diesel
Round Rock, Texas
ronspradley
__________________
'95 Monaco Windsor DP 32' Cummins 5.9
Toads '96 Tracker 4x4, '06 Honda CRV AWD
Life's too short to drink diet soda. 
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12-31-2014, 04:07 PM
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#2
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Senior Member
Join Date: May 2014
Location: Henderson, Nevada
Posts: 1,224
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You want to hear the truth??
__________________
2005 Newmar DS 4023, Spartan Chassis, ISL 370 Cumapart, 2008 Jeep Rubicon 4dr, 2015 Kia Soul, 1969 Italian & 2004 Akita
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12-31-2014, 04:18 PM
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#3
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Senior Member
Gulf Streamers Club
Join Date: Mar 2011
Location: Central Texas
Posts: 3,796
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Quote:
Originally Posted by DMTTRANSPORT
You want to hear the truth??
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Pretty sure I know what the truth is, but yea, sure, give it to me.
ronspradley
__________________
'95 Monaco Windsor DP 32' Cummins 5.9
Toads '96 Tracker 4x4, '06 Honda CRV AWD
Life's too short to drink diet soda.
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12-31-2014, 04:47 PM
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#4
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Senior Member
Join Date: Jul 2014
Posts: 35,423
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What a heart breaking story. How many hours to do it wrong, the first time.
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12-31-2014, 05:13 PM
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#5
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Senior Member
Vintage RV Owners Club Fleetwood Owners Club
Join Date: Mar 2013
Location: c above
Posts: 5,525
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 So sorry to hear that. I just had my MH in for Gennie repair @ a Cummings/Onan repair shop. $500.00 / $500.00 estimate.
$67.00 parts $400 something labor and that was after the service writer took off $100 bucks from the machinates time sheet. They got you good though. Sorry for the bad news.
Anything said about warranty usually they give 30 day or 1200 mile at least.
I think that is the norm here in MN.
Happy New Year,
Tim
__________________
1982 Pace Arrow P30 454
KarKaddy SS, Toad: 2009 Genesis
Tim, Joe and Lilly too. Mpls Minn.
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12-31-2014, 06:16 PM
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#6
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Senior Member
Gulf Streamers Club
Join Date: Mar 2011
Location: Central Texas
Posts: 3,796
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I have a year warranty on the new head I purchased. When they finished the work after 14 weeks, I drove home and worked on it for a couple of days. Installed EGT, turbo boost, and temp gauge because this old MH never had any gauges. Then loaded up to go out of town for weekend after Thanksgiving. Engine stopped a half mile from house and I called wrecker from my road service and had towed back to shop. This was Friday after Thanksgiving and they were closed but two guys were there working on personal project. One of them was the mechanic that worked on my MH. Asked if he could look at it and he said sure. Asked if he could look at it then, and he said no, he was not working for the shop, that he was not supposed to be there. Told him I was not supposed to be there either. He said nothing, did nothing. He looked at it the following Monday and it was just the wire going to the fuel pump had fallen off. Anyway, I only wanted to get the MH away from them. Which I have done. It has traveled a hundred miles since I got it back. I am hoping this engine is now fixed.
Anyone have a feel for how many hours a shop would charge to remove and replace a head on this B5.9? I know it is harder because of the pusher location.
ronspradley
__________________
'95 Monaco Windsor DP 32' Cummins 5.9
Toads '96 Tracker 4x4, '06 Honda CRV AWD
Life's too short to drink diet soda.
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12-31-2014, 06:22 PM
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#7
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Senior Member
Gulf Streamers Club
Join Date: Mar 2011
Location: Central Texas
Posts: 3,796
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Quote:
Originally Posted by twinboat
What a heart breaking story. How many hours to do it wrong, the first time.
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5 hours charged to do the original exhaust manifold gasket replacement.
ronspradley
__________________
'95 Monaco Windsor DP 32' Cummins 5.9
Toads '96 Tracker 4x4, '06 Honda CRV AWD
Life's too short to drink diet soda.
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12-31-2014, 07:11 PM
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#8
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Dec 2013
Location: S.W., Michigan
Posts: 686
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This is one reason I own a gasoline engine RV.
Sorry for your misfortune. 
__________________
2003 Winnebago WFG33V Adventurer - 8.1 Gas, Workhorse Chassis - Medium Titanium Metalic
"For GOD'S sake, be human"
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12-31-2014, 07:16 PM
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#9
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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Sounds like they overtorqued the new manifold and broke the flange.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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12-31-2014, 07:26 PM
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#10
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Senior Member
Winnebago Owners Club Ford Super Duty Owner
Join Date: Mar 2009
Posts: 1,129
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Quote:
Originally Posted by Tomtall
This is one reason I own a gasoline engine RV.
Sorry for your misfortune. |
+1!
__________________
Ole and Anne Anderson, Highland, Michigan
'02 Adventurer 32V, Ford F-53, ours since 4/08,Hankooks, Konis, SeeLevel, CHF
'84 CJ-7 , 5.3 Chevy, 3" lift, 33's, Detroit Locker, Fiberglas tub, winch, hi-lift
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12-31-2014, 07:32 PM
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#11
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,903
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Quote:
Originally Posted by Mr_D
Sounds like they overtorqued the new manifold and broke the flange.
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I agree! If the mechanic did not follow the Cummins torquing procedure, I'm quite sure that's what happened.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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12-31-2014, 07:50 PM
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#12
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Senior Member
Gulf Streamers Club
Join Date: Mar 2011
Location: Central Texas
Posts: 3,796
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Over-torquing would be my guess also. My problem is that I do not know how to prove that. I asked South Plains Cummins in Austin and showed them the old, broken head. They said it could have been installation error, and it could have been a defect in the original 23 year old casting. So, unless someone can tell me how to proceed, it is just my guess against theirs.
ronspradley
__________________
'95 Monaco Windsor DP 32' Cummins 5.9
Toads '96 Tracker 4x4, '06 Honda CRV AWD
Life's too short to drink diet soda.
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12-31-2014, 07:51 PM
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#13
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Senior Member
Join Date: Jul 2014
Posts: 35,423
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I retired from a large truck and construction equipment shop with a crew of many different caliper mechanics. The mechanic probably cross threaded it putting it in, or snapped it off, taking it out and did a bad job drilling it out and re-threading it. Some mechanics will not own up to their screw ups and service writers are not mechanics. They take the word of the mechanics.
I just find 49 hours of labor shocking.
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12-31-2014, 09:30 PM
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#14
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Junior Member
Monaco Owners Club
Join Date: Dec 2014
Posts: 4
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On Mitchell on demand in a 93 d350 5.9 the shop time for R&R head gasket is 7.3 hrs
__________________
Mike and Paula
1991 Monaco Dynasty
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