How many miles on your Cat C7

[captpar]

Got almost 70K on mine, 9 years old.

[wclogger1]

64000 on my C7, reset the valves at 45000, all were tight. No other problems with engine. Regular oil and fuel filter changes at 6000 , always use Cat filters and oil.

[4x4ord]

I've got a Cat C15 in my Peterbilt and it has 860,000 miles on it. It has never seen a Cat dealer. It gets a little warm when it's pulling hard... changing thermostats made no difference, changing the rad helped some...water pump next.

[Preacher_Man]

352K on our 2004 3126E, valves adjusted at 200K...nothing really out of adjustment. 1 Heui pump, a few injectors, then replaced all of them. Still going strong, just drove it to Virginia for a job this weekend.

[FIRE_UP]

Well,
At present, we now have 83,000 miles on our '04 Itasca Horizon 36GD with the CAT C-7 33OHP. It's been a great engine. I had the valves adjusted at about 60K miles and, made pretty much, zero difference in mileage or power. The engine ran the same after the adjustment. I just recently, at 82,000 miles, replaced my entire fan bearing assembly, belts, hoses, thermostats (CAT calls them "Regulators") and a few other odds and ends. Oh, and a failing water pump.

I had to pull both the radiator and CAC in order to perform all this maintenance/repair/replacement. Although I can remove both top engine bay covers from under the bed, getting to all the important bolts/clamps etc. for all that work would have been IMPOSSIBLE without pulling the rad and the CAC. Even though the 82K mile fan bearing was still turning, it was a tad bit noisy when I spun it by hand.

There was a youtube video about a gent replacing his C-7 water pump at a campground and, while that didn't look too bad, I wouldn't/couldn't do mine that way if someone paid me. I have plenty of pics of this recent job but, no way to show them on RV.net.
Scott

[cableguy574]

did valve lashing at 40000 and 49878 miles, and going good...:C

[vadertime]

About 59,770 miles on my 2004 Gulf Crescendo, which I've only had for 3 weeks. I put 105 miles on it myself bringing it back from the dealership. However, it is my intention to put a thousand or so on it every year until I retire in 5 years and 5 weeks from today. After that it's probably going to rack up 5,000 to 10,000 miles a year as we start touring the USA.:B

[RaenMark]

Just over 65K on our 05 Alfa See Ya! Still runs like a dream. Only thing we saw was some overheating at about 58K, bad thermostat. Had the system flushed and the radiator cleaned out.

[TexasShadow]

My motorhome has a 3126B caterpillar with 180,000 miles and runs perfect. I had holt caterpillar do the valve lash adjustment at 96,000 miles, will do again at 200,000 miles.
Bill :C 😄

[Teacher_s_Pet]

Presently 130,680. At 118,000 had several of the injector cup seals go bad. Valve lash checked at that time, all OK.

[sailor_lou]

I checked my valve lash at 40K and it took little to no adjustments, so no noticeable change in performance. I have good engine access from the top and the job was pretty easy.

Lou
05 Travel Supreme Envoy

[cableguy574]

I have 46000 on my 08 National Pacifica

[tinkerer]

58,000 on my 2007 MH with a 2006 C7. Did the valve lash at 55,000 and none of them needed adjustment.

[w4phj]

28,xxx, no issues.

Valve lash not checked yet.

Dash air is awesome !!!!!

[ncrowley]

I have 51K on mine. I had the HEUI pump go which required changing the injectors because of the metal shavings the pump put out. Expensive but covered by my extended maintenance contract.