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Stan
Stan, Mercedes Technician
Category: Mercedes
Satisfied Customers: 3526
Experience:  Technical support engineer
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does a Mercedes om404 engine require a special tool to refit

Resolved Question:

does a Mercedes om404 engine require a special tool to refit the fuel pump?
Submitted: 2 years ago.
Category: Mercedes
Expert:  Stan replied 2 years ago.
Stan :

Hello,
Please let me know the VIN of the truck, or full engine number. Will do my best to find the pump installation instructions and the order number of pump installation tool.
Best regards,
Stan

Customer:

Hi

Customer:

Engine is a v12 OM404 engine no 404 901-000000130 it is a marine unit

Customer:

We have had the fuel pump rebuilt and we have been informed it needs to have an alignment tool. We are not 100% sure as we think it can be done manually

Stan :

The assembly device is needed to seat the pump correctly before tightening it's mounting bolts.

Customer:

Hi, link not working

Stan :

Strange, it opens in a different window on my side. It is a pdf document

Customer:

just comes up as HTP404

Stan :

https://www.dropbox.com/s/o1dqdtxodrfn10p/OM444_Removal%20and%20installation%20of%20the%20injection%20pump.pdf?dl=0

Stan :

try this

Stan :

It should not be a problem to align the pump before tightening the bolts without the special tool.

Customer:

ok stan, thank you for help

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