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Mopar1973Man

Bosch VP44 injection pump removal the fast way!

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Here you go gang... How to remove the VP44 the quick and easy way. Takes approximately 45 minutes for me to do this much.

 

Remove the Mopar1973Man Crankcase vent (if applicable)

DSCF6954.JPG

 

Using a 10mm socket remove the air horn bolts and dipstick bolt.

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Using a 7/16 or 11mm loosen the top clamp of the boost boot.

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Move everything out of your way.

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Pack a shop rag in the intake to prevent stuff from falling in.

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Using a 13mm socket loosen the 3 bolts holding the APPS sensor and unplug and move.

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Now unplug the VP44 main connector and wire tap . This connector is a two step plug lock. Pull the release tab and wiggle the plug out then pull a bit more on the release and the plug should release fully.

DSCF6962.JPG

 

Now using a 10mm loosen the 3 bolts holding the 1,2,4 injection rail in place. Using a 3/4" wrench loosen 1,2,4 injection lines.

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DSCF6965.JPG

 

Now remove 1,2,4 injection lines as a group.

DSCF6966.JPG

 

Using a 3/4" wrench remove the overflow valve banjo and remove your supply line (may differ from mine being a big line kit)

DSCF6968.JPG

 

Now remove the crankcase vent. Just unscrews normal right hand threads. Do not pry on the nipple. 

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Now remove the pump shaft nut with a 1 1/16 inch socket. 

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Using a 23mm socket roll the alternator towards the coolant bottle to bring the keyway on the pump gear to TDC position and then install your gear puller and pull the gear loose on the shaft. 

DSCF6974.JPG

 

Now loosen the 3,5,6 lines but you do not have to remove. 

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Now you want to loosen the 2 bolts on the rear bracket with a 13mm socket. 

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Now remove the 4 nuts holding the pump to the gear case. 

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Now careful kick the 3,5,6 lines out there nipples towards the block.

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Now lightly pry the pump away from the case and remove. Check for the key in the shaft make sure its present.

DSCF6978.JPG

 

This is what you should have after removal...

DSCF6979.JPG

Edited by Mopar1973Man
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Pictures are always a PLUS.  What did you decide to do about the wire tap on your new VP44?  If I remember correctly, DAP sold a pump that allowed for a tap and a 1 year warranty, but it was a little more money.

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How often do you even use wire tap now with v2 stuff, I personally realy have no need for it anymore, maybe just to screw around.  Especially if you're going for mpg. With your bigger injectors and hybrid you may not need to tap it at all. 

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19 minutes ago, Dieselfuture said:

You said it, the power bug...

 

It true I do have a power bug. BUT! I do know my limitations and how far I can go. I'm not going to do like @TFaoro or @jlbayes that is way beyond my needs or wants.

 

18 minutes ago, trreed said:

We all knew he's had it....  Now he admits it!

 

I've always had it. I'm not going to deny that but my requirements are MUCH less than most. Actually, the MPG is the priority over the HP and TQ numbers.

 

15 minutes ago, Dieselfuture said:

You said it, the power bug...

Can't go back now denying it, it's on the record:burnout:

 

Nope. Not going to deny or go back. :burnout:

I love the feeling of grabbing a gear and the tires just ripping loose under the truck. Also fun to blast those puppies in Boise that think they got something and you eat them alive from light to light. 

Edited by Mopar1973Man
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In all fairness I do not recommend the path I took with my truck to anyone LOL

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After a week of sleeping in the garage the lazy Cummins didn't want to wake up. I ran the batteries dead attempting to get it to fire up. After fighting for a good 15-20 minutes I finally got it to light off. Now it does run I'm not seeing the wild lope I had before nor am I getting that wild aggressive timing any longer. I've only made a few short trips here locally which was getting a tank of fuel and taking out the trash. So I'll see what happens after a long haul. 

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Hopefully you get better mpg's and start playing with some tunes. They say when vp's wear out mpg drops.  My last tank playing with different tunes got me 15.4 hopefully just heavy foot...

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7 hours ago, CumminsTech said:

The ears go on high alert picking up the smallest of strange noises, brain even makes up a few sometimes😓

 

:lmao: so true 

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8 hours ago, CumminsTech said:

I guess when doing a pump just not as stressful

 

I hate to say but wrong. You know the two nuts on the block side I dropped one and never found it. Drove me crazy check everything making sure that it couldn't do any damage where ever it fell.

 

8 hours ago, CumminsTech said:

The ears go on high alert picking up the smallest of strange noises, brain even makes up a few sometimes

 

That is so true. But my problem is going from extreme heavy rattle to almost dead silent. Now I've got to figure out a good tune. I've asked @me78569 for his specs so I've got a base line to look at. 

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Weird...

 

So far the VP44 is doing good. Starts easy without grid heaters idles good. Now after the trip to Boise it got the like yet which is hard to explain. The coasting to light it sounds like Alex pulled after a run with slight surge idle that fades out. For information value I'm NOT wire tapped. Power isn't as good as with the tap, but still very strong running on the highway. MPG wise it appears to be close to the 18 to 19 range yet.

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