Jump to content

Welcome To Mopar1973Man.Com LLC

We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.

How to remove the Bosch VP44 Injection Pump the quick and easy way. Takes approximately 45 minutes for me to remove the VP44 Injection pump.

 

Remove the Mopar1973Man Crankcase vent (if applicable)

DSCF6954.JPG

 

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

DSCF6955.JPG

 

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

DSCF6956.JPG

 

Move the grid heater and intake horn out of your way.

DSCF6957.JPG

 

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

DSCF6958.JPG

 

Using a 13mm socket loosen the 3 bolts holding the APPS sensor and unplug and move over toward the driver side fender.

DSCF6959.JPG

 

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.

DSCF6964.JPG

 

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. Use an oil filter wrench or a strap wrench to loosen stubborn vent covers. 

DSCF6963.JPG

 

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

DSCF6970.JPG

 

Be careful removing the nut and lock washer that you don't drop them down into the gear case. A stubby Phillips screwdriver and a magnet is handy you can slide it off the shaft onto the Phillips screwdriver. 

DSCF6971.JPG

 

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 the injection line set.

DSCF6967.JPG

 

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

DSCF6969.JPG

 

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

DSCF6972.JPG

 

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

DSCF6977.JPG

 

Now lightly pry the VP44 injection 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

User Feedback

More options...
   1 of 2 members found this review helpful 1 / 2 members

Extremely helpful. Had to undo the return and supply lines and the fuel lines were especially fun but a well put together procedure nonetheless.