OM642 CP3 upgrade
OM642 CP3 upgrade
Here you can see the pumps side by side:
The differences for the connectors are the control solenoid being reversed, and the high pressure connection is around 3mm forward on the updated unit.
The part numbers are as follows:
1600 bar, original for early OM642: A 642 070 03 01
1800 bar, found on OM642LS: A 642 070 12 01
The later pump installed on the early engine with only loosening of the wiring harness and shifting it forward a couple cm. The high pressure fuel line had to be removed and reshaped to fit the new location. Everything else was just like installing the old pump.
Here is the new pump installed:
Now everything is running, but of course I am getting a high rail pressure alarm with mid to full accelerator application since the relationship between the rail pressure, accelerator, and load are different for the higher output pump. I have contacted GDE to see if they can calibrate for this.
My CP3 pump has started rattling on my early OM642, so I decided to try and upgrade to the later pump from the OM642LS engine.
Here you can see the pumps side by side:
The differences for the connectors are the control solenoid being reversed, and the high pressure connection is around 3mm forward on the updated unit.
The part numbers are as follows:
1600 bar, original for early OM642: A 642 070 03 01
1800 bar, found on OM642LS: A 642 070 12 01
The later pump installed on the early engine with only loosening of the wiring harness and shifting it forward a couple cm. The high pressure fuel line had to be removed and reshaped to fit the new location. Everything else was just like installing the old pump.
Here is the new pump installed:
Now everything is running, but of course I am getting a high rail pressure alarm with mid to full accelerator application since the relationship between the rail pressure, accelerator, and load are different for the higher output pump. I have contacted GDE to see if they can calibrate for this.
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