1979 300sd,, I have the black primer pump. In searching thru the pump threads, I have read that the old white pumps have to be unscrewed then pumped..
Do the black pumps have a screwed in ,stowed position?

Going to do a Diesel Purge and filter change tomorrow and this is something I was wondering about during my research.

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Second owner 1979 300SD 250K miles.
1995 Ford Lightning
66 Mustang
87 5.0 Mustang
08 Ford Edge
46 Willys Jeep
89 Transalp
97 Dodge Ram 2500 Cummins..

nope, the black handle style pumps do not require any storage position.

John

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

Thanks VStech..

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Second owner 1979 300SD 250K miles.
1995 Ford Lightning
66 Mustang
87 5.0 Mustang
08 Ford Edge
46 Willys Jeep
89 Transalp
97 Dodge Ram 2500 Cummins..

Not to mention the new style also does not require that you put a pan under the car to catch all the fuel barfing out past the handle as its predecessor.....

Are you sure about that? I have never seen, for sure, the later style MB/Bosch type priming pump. However, I have seen many, on various applications, over time.....my tractor has 2, one for priming the Injection Pump, and one for a "Cold weather Start" setup that injects some extra diesel just ahead of the intake valve......bith of those have a screw down, closed position.....as does every other one that I have ever seen!!!

My old style priming pump, does leak when in use, but is secure when properly closed.....and I don't use it all that often, just when I change filters, or if I need to troubleshoot or repair my injection system....I do my best, so far successful, to not run out of fuel!!!

SB

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Diesels:
'85 300D, "Max, Blue Benz", 155K, 27.0 MPG
'84 190D 2.2, "Eva, Brown Benz", 142K, 40.2 MPG
'77 240D (parts car)
'67 Eicher ES 202 Tractor "Otto" (2cyl, Air Cooled, 30HP)
Gassers:
'94 Ford F-150, "Henry", 170K (300 Six) 17.5 MPG
'85 190E 2.3, 148K....Parts Car
'58 Dodge W300M Powerwagon (Flat Fenders) Less than 10 MPG

The new, black Bosch pump requires no storage. Just screw it in and there it is, ready to be pumped.

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1983 MB 300SD Turbo Diesel

This may sound like a dumb question but I need to replace my old style one with a new one. Do you have to pump fuel thru the system after doing the change before you can start up or not?

- Peter.

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2021 Chevrolet Spark
Formerly...
2000 GMC Sonoma
1981 240D 4spd stick. 347000 miles. Deceased Feb 14 2021
2002 Kia Rio. Worst crap on four wheels
1981 240D 4spd stick. 389000 miles.
1984 123 200
1979 116 280S
1972 Cadillac Sedan DeVille
1971 108 280S

the only dumb question is the one left unasked. that and which brand oil to use... anyway, if you get it in without much spillage, you may not need to bleed it out, but plan on bleeding a few pumps anyway. John

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!