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 > Your search for 'cummins isb' found 45 matches.

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  Subject Author Date Posted Forum
RE: Looking at new Gasser

We've been looking at a new Winnebago Adventurer 38Q. Love the floor plan and features. Seems less expensive to operate due to lower maintenance costs. Currently have '05 DP with Cummins ISB. Pretty much have a handle of fuel/maintenance costs/trade-offs. Questions are: Will I miss the air bags? Why? Will the brakes need replacing more often? Will the lower torque be noticible? What advantages do a fiberglass roof have over TPO or EPDM? With out airbags you will get a lot of "rock and roll"! Especially around curves.
Pop-Pop C 03/04/14 01:43pm Class A Motorhomes
RE: Class A Fuel Mileage

Over the last 30,000 plus miles we are about 9.5 mpg overall driving about 65 while towing a Chevy HHR. On flat ground out west (WITHOUT a strong head wind) getting over 10 mpg would be common. Late model Cummins ISB engines can get great mileage in a 33-38 ft MH.
okgc 02/21/14 11:39am Class A Motorhomes
RE: Looking at new Gasser

We've been looking at a new Winnebago Adventurer 38Q. Love the floor plan and features. Seems less expensive to operate due to lower maintenance costs. Currently have '05 DP with Cummins ISB. Pretty much have a handle of fuel/maintenance costs/trade-offs. Questions are: Will I miss the air bags? Why? Will the brakes need replacing more often? Will the lower torque be noticible? What advantages do a fiberglass roof have over TPO or EPDM? Probably, smoother ride. No. Probably not, if you drive conservatively. Both the same, many will argue fiberglass is better but unfortunately there is no real proof, just opinions.
phnguyk 02/18/14 08:09pm Class A Motorhomes
RE: Looking at new Gasser

We've been looking at a new Winnebago Adventurer 38Q. Love the floor plan and features. Seems less expensive to operate due to lower maintenance costs. Currently have '05 DP with Cummins ISB. Pretty much have a handle of fuel/maintenance costs/trade-offs. Questions are: Will I miss the air bags? Why? Will the brakes need replacing more often? Will the lower torque be noticible? What advantages do a fiberglass roof have over TPO or EPDM? I would not leave the dealer without adding air bags,
Pop-Pop C 02/18/14 06:49pm Class A Motorhomes
Looking at new Gasser

We've been looking at a new Winnebago Adventurer 38Q. Love the floor plan and features. Seems less expensive to operate due to lower maintenance costs. Currently have '05 DP with Cummins ISB. Pretty much have a handle of fuel/maintenance costs/trade-offs. Questions are: Will I miss the air bags? Why? Will the brakes need replacing more often? Will the lower torque be noticible? What advantages do a fiberglass roof have over TPO or EPDM?
cochise49 02/18/14 10:56am Class A Motorhomes
RE: Synthetic oil change-over

I had to do a little research on this because I run a Cummins ISB and wasn’t as familiar with Cat. From page 15 Table 6 of the Caterpillar on-highway diesel engine fluids recommendations guide dated November 2009. This is the newest one I could find. SAE 10W-30 is the preferred viscosity grade for the following diesel engines when the ambient temperature is above –18*C (0*F) and below 40*C (104 *F) C7, C-9, C9, 3116, 3126. This chart also shows a 5W-40, 10W-40 and 15W-40 as being acceptable. Also hear is what it has to say about Synthetic Base stock oils. Synthetic Base stock oils are acceptable for use in Caterpillar engines and in Caterpillar machines if these oils meet the performance requirements that are specified by Caterpillar for a particular component. The highest level of protection is Cat ECF-3 or API CJ-4 oil category performance requirements. On page 17 Cat does say if you do the proper oil analysis you can extend the oil change interval. The diesel engine operates at much higher internal temps than a gas engine. It is only because they have much bigger cooling systems that they will run at the proper temperatures. You can do a search and find a large number of posts about coaches over heating. Most from dirty radiators. When I see EGT temps 1200 deg + when pulling a long hill I am glad I have oil that will stand up to it. I also like to get oil to the turbo as fast as possible and to give it maximum protection. The oil today is not the oil of our youth. 50 years ago I would never run less than strait 30 weight oil and never one of those new multi grade oils. Today I run Mobil 1 5-40 Turbo diesel Truck. This oil meets or exceeds Caterpillar ECF-2, ECF-3 and also meets API CJ-4, CI-4 PLUS, CI-4, CH-4/ SM, SL, SJ. Bill
WILDEBILL308 02/06/14 08:59pm Class A Motorhomes
Transmission oil change in Cummins ISB 5.7 diesel

How difficult is it to change the transmission oil and filter in a Cummins ISB 5.7 275 hp diesel? Know I should also change the filter. Also, where is the transmission filter located. Saw some information it is in the pan. Is that a simple task and will I have to replace a gasket? Thanks for feedback.
1ozark 02/04/14 07:05pm Class A Motorhomes
RE: A Diesel at Idling RPM’s .......

My Cummins ISB Manual advises to avoid long periods at low idle due to carbon buildup. More info and other effcts here: RV Diesel idling (Waking my neighbors when leaving the RV Park normally not my concern, if they haven't left by 9am they should at least be awake.-- Just kidding!!!)
hooligan 02/01/14 01:36pm Class A Motorhomes
RE: 03 Cummins 5.9?

But if your going to look at a 2003 motorhome with a Cummins ISB 5.9, it could very well be a 2002, or even possiblily a 2001 Cummins engine. So be careful. If you can get the engine #, you can call Cummins Care (800-343-7357) and they should be able to tell you. Here's some more info: Cummins ISB 53 Block And Brian, would you please PM or email me!!! Pat
wny_pat 01/20/14 09:19pm Class A Motorhomes
RE: Cummins power

Back to OP question More info: The Fleetwood Excursion 33A has a Cummins ISB 6.7L with 300hp and 660 ft-lbs at 1,600 rpm. The Tippen Allegro RED 33AA has the Commins ISB 6.7L with 340hp at 2600rpm and 660 ft-lbs at 1,600 rpm. Thus the reason for my original question. The new Thor Palazzo also has a 300hp Cummins ISB Thor Palazzo specs I suspect the loss of 40hp makes it cheaper to buy. .
okgc 01/19/14 08:48am Class A Motorhomes
Cracked Exhaust Manifold

I just noticed a complete break in my exhaust manifold. I can fold a piece of paper twice (four sheets) and easily slide it completely through the manifold (see pic below). A couple questions: 1) For the last 6 - 8 months, I’ve noticed the exhaust brake doesn’t do much. Could it be the exhaust brake baffle is working, but the pressure is escaping through that crack? 2) is this a “must fix right away” item? 3) Any recommendations on where to get a new manifold (i.e. does brand matter)? It’s a 1999 275 hp Cummins ISB in a Freightliner XC chassis. http://i56.photobucket.com/albums/g191/cvd01x/IMG_20140110_143802_521_zpspwqvryly.jpg (I'd just hosed off the inside of the engine compartment, thus the wet spots on the manifold) http://i56.photobucket.com/albums/g191/cvd01x/IMG_20140110_144015_004_zpsvijlputz.jpg Thanks,
CVD 01/12/14 09:55pm Class A Motorhomes
RE: Cummins power

More info: The Fleetwood Excursion 33A has a Cummins ISB 6.7L with 300hp and 660 ft-lbs at 1,600 rpm. The Tippen Allegro RED 33AA has the Commins ISB 6.7L with 340hp at 2600rpm and 660 ft-lbs at 1,600 rpm. Thus the reason for my original question. I have never heard of a 6.7 with 300/660 and I'm thinking this is may be a mistake in their literature. It could be a 300/620. Cummins 6.7 300 HP
ScottG 01/11/14 07:53pm Class A Motorhomes
RE: Cummins power

More info: The Fleetwood Excursion 33A has a Cummins ISB 6.7L with 300hp and 660 ft-lbs at 1,600 rpm. The Tippen Allegro RED 33AA has the Commins ISB 6.7L with 340hp at 2600rpm and 660 ft-lbs at 1,600 rpm. Thus the reason for my original question.
Johnofbham 01/11/14 07:41pm Class A Motorhomes
RE: Breakdown Information

Winnibago, Journey 2002, 34' Cummins ISB 275hp, Allison 2000, Freightliner Chassis. Put them on you check list. Also recommend that you carry a spare, as the are not found in local auto stores. You will have to get them from FL parts. According to FL to get going until you can replace the part, you can simply disconnect the battery and connect both circuit breaker leads together on one terminal reconnect the battery as a temporary measure without harm. Gypsy1, thanks for the really good info! However, I would like to add that before you bypass that breaker to get going, old make sure it wasn't actually doing its job correctly in the first place. Otherwise one could end up in a real world of hurt. Jeff
Spizzer 01/04/14 08:31am Class A Motorhomes
RE: Winnebago Journey 34B

A good friend of ours has a 2003 34', not sure of the model signification. They purchased it new in 2004 and love it. It has the 330 hp CAT (C7). They looked at the 32' which had the 300 hp Cummins ISB but he said it porpoised a bit on the highway. He absolutely did not want anything larger than 32' but I convinced him to go two feet larger and get the C7 engine. He is glad they did, they love it. It has made a couple of trips to Alaska in the last decade. Mike.
zmotorsports 01/02/14 09:18am Class A Motorhomes
RE: Breakdown Information

Winnibago, Journey 2002, 34' Cummins ISB 275hp, Allison 2000, Freightliner Chassis. While traveling thru Delaware in November, as I pulled up to a traffic light the engine stumbled and quit. The normal dash lights were all out, nothing associated with the chassis seemed to have power. The ignition key, and all gauges dead. After being towed off the road to a rest area, I began trying to determine the cause of the situation. First I checked the battery's both house and chassis. Both battery' banks we're showing more than 12.6 volts. Checked for loose cables or any obvious problems. Tried the auxiliary start relay to see if that would power the starter, no such luck. Checked the front automotive circuit breakers and fuzes, and the buss that powers them, no power? Called the Freightliner 24/7 Customer Service (800) 385-4357, and described my problem. Much to my surprise the Freightliner tech was extremely knowledgeable. He walked me through the diagnostics and we determined that the culprit had to be the main chassis battery 135 Amp circuit breaker. The FL tech described in detail exactly where the breaker was located and how to bypass it to determine if it was bad. The breaker is located on the drivers side behind the rear wheel attached to a flange below the rail. Not to be confused with a similar breaker assembly on the passenger side in the same location which is for the engine intake air starting aide. The test of the breaker revealed it was ok, but in the process I noticed that one of the. Wires attached to it seemed to be loose and arked as I moved it around. Simultaneously a relay chattered and the dash powered up. I cleaned and tightened the connections, the relay held and everything powered up. Engine started ect. The location of both of these breakers is below the rails and may be in or near the road debris stream when the vehicle is moving. It is likely that water/moisture is sprayed on these assemblies when driving in the rain. Put them on you check list. Also recommend that you carry a spare, as the are not found in local auto stores. You will have to get them from FL parts. According to FL to get going until you can replace the part, you can simply disconnect the battery and connect both circuit breaker leads together on one terminal reconnect the battery as a temporary measure without harm.
Gypsy1 12/26/13 12:23pm Class A Motorhomes
cummins ignition problems

Just purchased a 2000 Winnebago with a 5.9 Cummins ISB. It had been sitting in a field for several years and has rust issues on the undercarriage. Had problems with the ignition right from the start as I would have to turn the key several times before it would fire up until one day it would not turn over. Replaced the starter solenoid which had failed but still no start. I was able to Hotwire the rv to start it up as we had a trip planned the next day, drove 500 miles no problem parked and then the engine would not turn off. Any suggestions?
dec17 11/29/13 06:27am Class A Motorhomes
RE: Tiffin DP Breeze

The Breeze is narrower and not as tall as most Class A coaches. Current HP is 240. The Breeze also has IFS. The next model up is the Allegro RED which uses the Cummins ISB engine. It is available in 33, 34, and 36 ft models. The RED is your standard 102" wide 7 ft ceiling motorhome. The shortest Phaeton (Cummins ISL) is 36 ft. Your best bet is the tiffinrvnetwork.com for comments from owners.
luvlabs 11/16/13 12:55pm Class A Motorhomes
RE: who has 340-hp Cummins 6.7 turbo 2500 Allison

Our sig coach has the Cummins ISB 6.7 and Allison 2500. We are at about the same weights and flat tow our Jeep Grand Cherokee. It's not a rocket ship but the combination goes down the road without problems. We seem to be averaging right at 10mpg running at 65. It will loose some when the wind blows or if we are doing a lot of climbing. It never gets below 50 even on the steepest hills. Keith
kedanie 11/11/13 03:41pm Class A Motorhomes
RE: 2001 monaco knight 36r with 260 cummins

I agree that the Cummins ISB would be under powered for that coach.
RayChez 11/09/13 04:37pm Class A Motorhomes
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