brandt ranch
Tustin Ranch, CA USA
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Joined: 09/02/2003
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CAC?
Brandt Ranchers, and Bailey, the Golden, too!
'05 Expedition 37U, CAT C7/Allison 3000MH
'04 Jeep Wrangler Sahara
FMCA 333981
Life Time Good Sam Member
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BillofPA
York, PA
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Joined: 10/06/2007
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CAC. Charge air cooler.(in turbo circuit).
Jenny & Bill
2004 H/Rambler Ambassador 34PDD
Cummins ISC330 Allison 6 speed
2003 Chevy Malibu Toad
Our new Yorkie, Daisy.
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wolfe10
Texas
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Joined: 10/08/2000
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CAC= Charge Air Cooler= Inter-cooler= After-cooler
All the same thing. It takes hot intake air from the turbo and cools it to close to ambient temperature.
Intake air coming out of the turbo can be over 300 degrees F. Cool air is denser and gives more HP and MPG, hence the use of a CAC.
Brett Wolfe
1997 Safari Sahara 3540
EX: 1993 Foretravel 36' U-240
FMCA Forum: www.community.fmca.com/index
Diesel RV Club:http://www.dieselrvclub.org/
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J Walker
Oakton, Va
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Joined: 06/12/2003
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Although I don't have a CAT engine I was thinking about the serpentine belt length relative to this thread. On my Cummins ISB I changed my serpentine belt last summer using a cross reference Gates belt instead of the Cummins belt. Three weeks ago I started my MH and found the alternator seized. My thought is that the Gates belt was shorter than the Cummins belt. It seemed much more difficult to install because I had to move the tensioner further. I am wiser now and I just hope my water pump didn't get damaged.
Jim Walker
2000 34' Damon Ultrasport DP
2009 Malibu
Brake Buddy
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wolfe10
Texas
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Jim,
Yes, improper belt tension can and will take out bearings.
Causes can be incorrect length belt, incorrect tensioner, use of different than speced alternator, A/C, etc (anything driven by that belt). Additionally, pulley mis-alignment can take out not just the belt, but cause excessive bearing wear.
I know of one manufacturer who had a rash of hydraulic pump failures. The cause-- excessive belt tension. Cure-- re-drill the detent hole in the pump bracket 15 degrees from OE hole to give less (but sufficient) belt tension.
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EdNdonna
Tipton,Calif.
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Joined: 05/10/2005
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I just got done putting in a grease able fan hub.
5M-6509... Seal O Ring $3.05
134-5690...Bracket $83.65
6I-9235...Bearing $52.42
123-0856...Shaft $55.81
100-4026...Retainer $87.12
Also a grease hose to reach it easily from Napa auto parts...7151229 $7.99
2006 Fleetwood Bounder 34H Cat C7 300hp
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Joeycockerspaniel
Cumming, GA
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Joined: 10/17/2006
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Great info, guys. When I gave the broken serpentine belt to the Cat service Meg, he gave it to one of his guys to go and check to see If they had one in stock, the assumption being that it was the correct belt. So now I need to call the McRae on Monday and make sure that he is going to the book to find the right belt rather than assume that the right belt was in place. The previous repair facility may have installed the wrong belt. Got it. Great conversation. I appreciate the help.
Hank
Hank & Winde
Cumming, GA.
2006 Forest River Charleston
CAT C7
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Joeycockerspaniel
Cumming, GA
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Forgive the auto correctings. I think you get what I was saying.
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brandt ranch
Tustin Ranch, CA USA
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Great info edNdonna.
Looks like it is a change over of a few items but under $300. Can't understand why I got charged about $200 for just my bearing, but when you are stuck in the desert at 10:30 at night, you tend not to complain too loudly.
CAT owners, bookmark this threa.
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brandt ranch
Tustin Ranch, CA USA
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Joined: 09/02/2003
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oh, and edNdonna, I almost bought the same floor plan in 2005!
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