fuel injector pump on IH 444 diesel tractor

how do you remove the fuel injector pump on a IH 444 diesel tractor. How do you set the engine so you know where the correct location is when you return the pump.

Hi Ducks, It has been 40 years since I changed
one.
This is the way I did it right or wrong:
1)Clean the pump and area around pump and blow
with air gun.
2)Scribe line between pump and mounting on pump
drive gear housing.
3)Remove front cover off pump drive gear cover.
4)Scribe a line on timing gear and pump drive
gear. This line will be used during re-install of
pump.
5)Disconnect all fuel and injector lines from pump
and cover lines and port ends to prevent dirt
contamination.
6) Loosen the 3 screws in the pump drive gear.
7) Remove 3 nuts from pump mounting bolts.
8) Remove 3 screws from pump drive gear.
9) Grab pump and wiggle and pull towards rear of
tractor and pump should come out of drive gear. Be
careful not to drop dowel pin into timing gear
housing.
There is a paper gasket on the pump and the timing
gear cover that should be replaced.
Re-install using reverse procedure and making sure
scribe marks are aligned.

Here are some other posts from archives about BD-
154 and injection pump:

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 snapring 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.


B-275

Timing marks are on the flywheel and clutch-
housing cover. You have to take the dust shield
off to see them. Set at TDC for #1 cylinder. If
the CAV rotary pump is original - there is a
scribe-line on the front mounting-flange that get
lines up with mark on the engine. There is also a
scribed line on the injection-pump rotor that you
can't see unless you take of the timing window
from the pump.

Pump has a 3 bolt drive hub with a pin in the
drive gear that enters the drive hub groove for
proper timing. Pump also has a scribe line on one
flange ear that aligns with the scribe line on
timing gear case. Don't need to time this one to
remove and replace the pump. Only way to get it
way off is if the gear is installed wrong.

JimB
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