International 424 injection pump problem

CJW100

Member
Well I?ve got yet another injection pump problem driving down the road and engine just died dead nothing at all so after messing with fuel and finally decided it wasn?t a fuel issue so I pulled the timing cover on the injection pump and it wouldn?t spin when the engine was turned so i pulled the front cover and when I pulled it off three bolts fell out two stripped really bad and one broke in half. I found new bolts and pulled the pump off to make sure it still turned free and everything seems good so now the only problem is I don?t have a clue in the world how to time this tractor no flywheel degree cover anywhere I could find. Going to run into town tomorrow to see if I can find an I and t manual but thought I?d ask here to see if someone knows exactly what to do. Thanks Caleb
 
Hi this is from a archived post on this site:
I also just rebuilt a BD154. I might note that the timing gear marks can be a bit deceiving due to the idler between the crank gear and the injection pump drive gear. Mine runs really nice. Fires right up after using the glow plugs when cold, but after she is warm, it takes right off.

Been a while since I've timed a CAV/Lucas injection pump, bear with me. If you pull the rectangular cover off the side of the pump (held on with 2 small bolts) you will see the side of the cam ring. It will have a scribe mark on it the you can see move in the window as you turn the pump driveshaft. When that scribe mark lines up with the square end of the snap-ring holding the cam ring in the pump body, the pump will be at start of injection. You need to know the static timing mark used for setting start of injection, usually either marked on the flywheel or front pulley, not sure on a 414, but on many engine it is right at TDC. Rotate the crankshaft in the direction of engine rotation, (to take up any lash in the timing gears) until the engine timing marks line up, with #1 cylinder on top of compression stroke. At that point match the marks in the pump and lock her down to the front plate. Turn the crankshaft back 45 degrees and bring it forward again and recheck both sets of marks. Readjust if needed, reinstall window cover plate and bleed pump. Guessing on fuel pump timing and getting too much advance can be fatal to the engine if it is expected to work hard. I refuse to use the external scribe marks on the pump and front front cover, seen them out by over 1/8 inch on a regular basis. Hope this helps.

See photo below from BD-144/BD-154 IH Engine Service Manual concerning timing gear alignment at TDC.



cvphoto37834.jpg
 

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