11000 Series Engine Injection Timing:

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   From the service manual on this engine it shows a static timing of 18 degrees BTDC, and a running timing of 36 degrees BTDC. My question is how is one to test the running, or dynamic timing of the engine? This "snip" is from the engine manual for the engine series:

My engine has a Roosa-Master DC series injection pump which has bench checked fine by a competent fuel shop.

Nowhere does it go into testing the running, or dynamic timing of the injection system although it could be done with a diesel timing light I'm thinking. 

There is a procedure for testing/aligning an injection pump with automatic advance, but my pump does not have this feature. 

Edited by Codger - 21 Dec 2021 at 9:28pm

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Codger Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 23 Dec 2020 Location: Utopia Points: 2041	Post Options Post Reply Quote Codger Report Post Thanks(0) Quote Reply Topic: 11000 Series Engine Injection Timing: Posted: 21 Dec 2021 at 9:26pm
	From the service manual on this engine it shows a static timing of 18 degrees BTDC, and a running timing of 36 degrees BTDC. My question is how is one to test the running, or dynamic timing of the engine? This "snip" is from the engine manual for the engine series: My engine has a Roosa-Master DC series injection pump which has bench checked fine by a competent fuel shop. Nowhere does it go into testing the running, or dynamic timing of the injection system although it could be done with a diesel timing light I'm thinking. There is a procedure for testing/aligning an injection pump with automatic advance, but my pump does not have this feature. Edited by Codger - 21 Dec 2021 at 9:28pm

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Kcgrain Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 24 Sep 2009 Location: Wisconsin Points: 769	Post Options Post Reply Quote Kcgrain Report Post Thanks(0) Quote Reply Posted: 22 Dec 2021 at 10:02am
	You have to have a special diesel injection timing device that snaps onto the injector line and "feels" the impulse.

DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 20534	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 22 Dec 2021 at 12:11pm
	18 degrees is all you need to worry about. The advance mechanism is built into the pump and you shouldn't really have to worry about it. I have a clear plastic window with marks built into it that allows you to see advance movement when the engine is running.

Codger Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 23 Dec 2020 Location: Utopia Points: 2041	Post Options Post Reply Quote Codger Report Post Thanks(0) Quote Reply Posted: 22 Dec 2021 at 8:57pm
	Thanks for the response(s) guys. No experience with these engines at all but a bit with others. Here are a few photos of my diesel timing light. It is a Sun unit and has transducers to fit most diesel pumps used up into the 1990's. The curved adapter on the left side is for Roosa-Master pumps and others that the injection lines affix to the body sides. I do have a few fuel pipes to facilitate a jumper line to make the transducers fit into the circuit, but they're not shown. I've seen those clear windows for the side of the injection pumps in the past, but have never worked with one. Next warm day I'm going to pull both the timing mark cover on the flywheel housing and pump window as I didn't install the pump onto the engine after the drive shaft seals and pump calibration were replaced and checked. I want to ensure all is correct before placing the machine into service. Thanks kindly,