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Daniel Wilson
Daniel Wilson,
Category: Medium and Heavy Trucks
Satisfied Customers: 4373
Experience:  Owner at DJ Wilson
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Want to know why my engine brake is not working properly. It

Customer Question

Want to know why my engine brake is not working properly. It works but has no power in either cycle. It has three stages. This is on a Volvo 660 with a ISX Cummins Engine
Submitted: 9 months ago.
Category: Medium and Heavy Trucks
Expert:  cumminsdr replied 9 months ago.

What do you mean it works but no power? ? No power in the engine when it works? Or no power to the selinoids?

Customer: replied 9 months ago.
You can hear it but it does nothing to slow down the truck. Even when empty.
Customer: replied 9 months ago.
It's very weak
Expert:  cumminsdr replied 9 months ago.

In that case first you need to readjust the overhead and put the valves and brake back in spec. And if that still does not help suspect the engine break selinoids and not working properly. This is a common issue but most times the adjustment is just out. The engine brake is adjusted to 7mm and requires a special tool. Have a dealer or Cummins perform the troubleshooting and repair if needed

Expert:  Daniel Wilson replied 9 months ago.

Hi George, It is Dan. Here is the engine brake adjustment procedure and tune up kit available for your engine. Click on this link. I would have the kit installed and the overhead adjusted. I hope this helps

http://www.jacobsvehiclesystems.com/files/support/docs-pdfs/2882081.pdf

Expert:  cumminsdr replied 9 months ago.

Hi just following up. Please don't forget to rate my service.

Expert:  Daniel Wilson replied 9 months ago.

Hi George, Let me know if you still need any further help.