OM642 High pressure fuel pump installation
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2012 S350 Bluetec 4MATIC; 2011 ML350; 2005 C230k;
OM642 High pressure fuel pump installation
Does somebody know how to install high pressure fuel pump on OM642 engine? Does it needs adjustments or timing? According to WIS step 10 "Position piston of cylinder 1 on crankshaft to ignition TDC" Does this mean to put crankshaft pulley to TC position?
Also is not clear how to adjust position of drive gear relative to high pressure pump in step 20.
I had leak on camshaft plug, so I removed the pump, but now I have problem to install the pump because the manual is not clear and I don't want to damage the engine with stupid mistake.
Attached is WIS document
Also is not clear how to adjust position of drive gear relative to high pressure pump in step 20.
I had leak on camshaft plug, so I removed the pump, but now I have problem to install the pump because the manual is not clear and I don't want to damage the engine with stupid mistake.
Attached is WIS document
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From: V E G A S
1922 Ford Model T / no OBD
The pump delivers constant pressure, so technically doesn't need any timing.
I still would follow WIS as there might be different factors in assemble.
#20 tells to position teeth vertically.
I still would follow WIS as there might be different factors in assemble.
#20 tells to position teeth vertically.
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From: New Hampsha
'17 GLS450, '14 GLK250, Grandpa's Roadster
There are two TDCs. One is the TDC-ignition you're looking for. The other is TDC-exhaust. As you turn it over, approaching TDC-ignition the cylinder will forcefully expel air. If you put your thumb over the plug hole the air will force it off. On the exhaust stroke little or no air will be expelled (because the exhaust valve is open) and you can easily keep your thumb over the hole.
I would use a soft plastic rod to test for piston movement. Wood is OK, too. When the rod moves up the piston is coming up. You want to stop when the TDC mark on the crankshaft aligns with the timing pointer. The rod will stop moving, and if you go past it will start back down. Going back and forth a little (10 degrees or so) is OK, but you want to align the marks while turning the crank in the normal (CW) direction. Otherwise, always turn it in the normal direction, ClockWise.
I would use a soft plastic rod to test for piston movement. Wood is OK, too. When the rod moves up the piston is coming up. You want to stop when the TDC mark on the crankshaft aligns with the timing pointer. The rod will stop moving, and if you go past it will start back down. Going back and forth a little (10 degrees or so) is OK, but you want to align the marks while turning the crank in the normal (CW) direction. Otherwise, always turn it in the normal direction, ClockWise.
