Caterpillar 3126b engines

Nothing in the procedure looks like it couldn't be done in the coach on mine. I have a 98 on a Magnum chassis. 300hp. I find it quite spirited even with the race trailer behind us.

Yep, I too would like to know just which coach(s) that have a CAT engine, would have to have that entire engine pulled, just to change injectors. There's a few posts on here from folks who've needed to have the HEUI pump and injectors replaced and, not one of them ever mentioned that entire engine had to be removed for the process.
Scott

conceptumator wrote:
I won't claim to be an expert, but my friend that takes care of the mechanics for us is most certainly what I would consider expert. When looking for our new RV, his words of advice to me were that both Cat and Cummins were great engines, but steer away from the Cat. The main reason, as I understood it, was with long term maintenance, specifically the injectors. From his description, replace of the injectors on the Cummins was simply that - pull out the old ones and put in the new ones. BUT...on the Cat, it appears you actually have to pull the entire engine out to replace the injectors. While the cost of the injectors in about the same, pulling the engine to do the work results in an additional cost of up to $6,000. Again, this is second hand to me from someone I trust, so please check and verify. I would suggest just calling a couple of Cat and Cummins dealers and getting an estimate for replacing the injectors and see what they tell you. Good luck!

This certainly does not sound accurate...never heard of such a thing. It would be interesting for you to go back and ask what particular MH he has had to do an engine pull to access the injectors. Let us know please.

Sorry, never heard of pulling either a Caterpillar or Cummins to change injectors.

I guess it could happen if a coach maker provided zero engine access.

I won't claim to be an expert, but my friend that takes care of the mechanics for us is most certainly what I would consider expert. When looking for our new RV, his words of advice to me were that both Cat and Cummins were great engines, but steer away from the Cat. The main reason, as I understood it, was with long term maintenance, specifically the injectors. From his description, replace of the injectors on the Cummins was simply that - pull out the old ones and put in the new ones. BUT...on the Cat, it appears you actually have to pull the entire engine out to replace the injectors. While the cost of the injectors in about the same, pulling the engine to do the work results in an additional cost of up to $6,000. Again, this is second hand to me from someone I trust, so please check and verify. I would suggest just calling a couple of Cat and Cummins dealers and getting an estimate for replacing the injectors and see what they tell you. Good luck!

Thanks for all the replies an none negative.They ease my mind imensely.

I have a 3126B Cat engine in my Beaver DP. 43000 miles and nothing but service. I did have the valve lash adjustment done at 30,000 miles...

I gotta say.... I love mine. 28,000lb coach pullin a 14,800lb 37' trailer, and she takes me wherever i want to go..:B:B

Well, ALMOST out of the On The Road Business:

http://www.cat.com/en_US/products/new/by-industry/on-highway-truck.html

I have the 3126-E Cat engine with 60K miles on it, and it has been a very good engine.
Difference the B engine had was the oil pan was a deep pan and took a lot more oil then the shallow E which holds 19 quarts. But you can not go wrong with a Cat engine. When I bought the coach brand new the engine had five years unlimited mileage warranty.