Author Topic: Injection Pump removal  (Read 1584 times)

mauro12

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Injection Pump removal
« on: August 04, 2020, 07:08:36 »
Hi guys, I have a general question. When you remove the injection pump from the car, it’s necessary to drain the engine oil and coolant too? Or you can leave them? Thank you
Mauro Pisani
250sl 1967 5speed zf manual

mauro12

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Re: Injection Pump removal
« Reply #1 on: August 04, 2020, 08:29:08 »
In addition to what I’ve just asked, since I’m going to have my injection pump calibrated, I would like to give to my bosch dealer the right seals ( I think is cheaper to have from our sources , rather than from bosch ). I found on sls shop a seal kit for the inj pump. Do we need other seals or this is the only kit that exist? Is it sufficent? Thank you.
Mauro Pisani
250sl 1967 5speed zf manual

ja17

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Re: Injection Pump removal
« Reply #2 on: August 04, 2020, 15:23:36 »
It is not necessary to drain the engine oil. You may wish to drain the coolant since you have the WRD coolant hoses connected to the IP.
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
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mauro12

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Re: Injection Pump removal
« Reply #3 on: August 04, 2020, 15:40:26 »
Thanks for your answer. It seems quite complicated to remove , at least for me.
Mauro Pisani
250sl 1967 5speed zf manual

mistertj

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Re: Injection Pump removal
« Reply #4 on: August 04, 2020, 20:34:45 »
It goes without saying to make sure the engine is at 20° after TDC and not 180° off. Easy check is to see where the distributor rotor is pointing. Should be just after the #1 position. The first time I removed the injector pump, just pinched off the hoses but there was always a drip. All the subsequent times, just drained a gallon out of the radiator. I found it less messy.