Unless your MD injection pump was switched sometime, it has a type A IH pump with a primary and scavenger pump on the rear with 3 lines plumbed to it. 400 may have a type A or B, If its a B type there will be 2 lines plumbed to primary pump and no scavenger side. A drip tube is used on the bottom of B type pump and none on A. If you switch from one type pump to the other some of the lines will need replumbed. Model number of pumps is on a metal tag on side of pumps. Some adjustment may be needed when switching certain pumps to a different engine and some will be okay.
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Today's Featured Article - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
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