Cummins ISL valve adjustment interval

Deleted.

ScottG wrote:
Time has nothing to do with it. Wait for the mileage interval.

I agree. What is magic about 48 months if you don't have the mileage.

Cummins told me not to even thing about adjusting the valves until 250,000 miles. We are averaging about 8-10,000 miles a year. At just over 60,000 miles, no oil usage, I have the oil and filters changed every 10,000 miles. I will go over about 1,800 miles on this next change.

MM.

barlow46 wrote:
"they suggested I have it done now (due to the fact the engine is 6 years old) primarily to show that I have followed the recommended maintenance steps in the event I might need their help (beyond warranty) for a mechanical failure."

If you do need their help beyond warranty, they will be happy to help you and also will charge you the going rate for their help even if you get the valves adjusted. If you do not get the valves adjusted, you are going to receive the same help at the same price.

They may be referring to "customer good will" warranty after the written warranty has lapsed and if you have a serious engine problem, then they may assist you with the cost but you will not get that in writing.

Agree. The Cummins rep did specify that in the event of a serious problem, there are occasions when Cummins may provide some assistance but only when all maintenance has been done and documented.

In fact, at my local Coach Care they recently had an American Coach with an ISX just out of warranty (I believe he said only 2,000 miles beyond) that had dropped a valve. The shop supervisor told me Cummins was working with the customer to provide some help with the expense for repairs.

"they suggested I have it done now (due to the fact the engine is 6 years old) primarily to show that I have followed the recommended maintenance steps in the event I might need their help (beyond warranty) for a mechanical failure."

If you do need their help beyond warranty, they will be happy to help you and also will charge you the going rate for their help even if you get the valves adjusted. If you do not get the valves adjusted, you are going to receive the same help at the same price.

They may be referring to "customer good will" warranty after the written warranty has lapsed and if you have a serious engine problem, then they may assist you with the cost but you will not get that in writing.

I decided to call Cummins and they suggested I have it done now (due to the fact the engine is 6 years old) primarily to show that I have followed the recommended maintenance steps in the event I might need their help (beyond warranty) for a mechanical failure.

I do hear a bit of 'clacking' but since this if my first Cummins, I have no reference. The CAT in my previous coach sounded much different.

I have an appointment with my local Cummins CoachCare center to have the front shocks replaced and plan to ask for their opinion on the matter.

Unless there's a loud clacking, don't mess with them. Even at the service interval, their probably won't be much adjustment needed.

Time has nothing to do with it. Wait for the mileage interval.

I am waiting until the mileage interval. Those that I have talked to, indicate that when they did have the valve adjustment made, there was no adjustment needed.