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High-Pressure Pump Replace (M276)
Brand: Mercedes-Benz
Model: E350
Chassis: W212
Engine: M276 DE 35
Transmission: 722.9
Project: Repair
Labor: 4 hours
Part #: 276 07 001 01，276 07 006 01
As the request of a friend, due to time constraints, the relevant content of "Benz Maintenance Manual WIS" was temporarily posted below. The specific steps will be listed later. If you have replaced the ATF according to these documents, I'll appreciate it if you make some videos or photos of the process and post them to Forum to help more people to perform this work.
Notice: Replace the high-pressure pump is one of repairing project. There are several steps to reach the position of high-pressure pump. and there also have some sealing part should be replace, preparing before you start the work.
Main Steps of replace the high-pressure pump
Drain in coolant
Disconnect the ground line from the battery
Remove air filter housing
Take off and remove the insulation from rail
Remove resonance intake manifold
Detach engine wiring harness on crash plate. (reference document)
Place engine on cylinder 1 at 40° after top dead center
Relieve fuel pressure over diagnostic socket
Relieve fuel pressure in fuel high-pressure circuit
Tightening procedure for housing of fuel system high pressure pump
Check high-pressure lines
Attach union nuts for fuel lines to rails and High-pressure pump
Inspect cooling system for leaks
Check fuel high-pressure circuit with diagnostic system
Additional Word
The repair program is written according to the repairing booklet of Mercedes and the operation by myself. There will definitely be some incorrect or immature. I appreciate it if you might leave a comment of suggestions to improve the above program, in order to benefit the DIY hobby Needs, thank you!
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