im putting vac pump back on my 79300sd-gasket is hard to get,seems to be only available with rebuild kit at 275 $,gasket has to have 8 holes-6 for bolts and 2 for guide pins-different than later pumps,im wondering what happens without gasket,useing some sort of permatex or useing gasket material and making one-though this is hard to get right,any advice

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95 e320,87 sdl,79 300sd

What your going to get in the kit is a paper gasket. I'd just make one yourself. Put a real light coat of permatex on it and you'll be set.

Fastlane has the gasket you're looking for by the way - http://catalog.peachparts.com/ShopByVehicle.epc?q=&yearid=1979%40%401979&makeid=63%40%40MERCEDES+BENZ%40%40X&modelid=6203%3AED%7C10000133%3AMBC%7C1509%40%40300SD&keyword=vacuum+pump&subcatid=P:240733@@Vacuum%20Pump%20Gasket&mode=PA

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Use a small ball peen hammer. Lay gasket paper over the mating face of the V/P, tap, tap, tap, presto, you have your gasket. I use a small amount of blue RTV to hold it in place when you install it.

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

The local Auto Parts store will sell the Gasket material (paper).

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84 300D, 82 Volvo 244Gl Diesel

thanks-that will work,no fastlane des not have it-part shown is for later model. pump,ive spoken to phil about it,my pump is "special"and 1500 new

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95 e320,87 sdl,79 300sd

Gasket material and ball peen hammer. It will be as good as a preformed one you buy.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Yeah, most people don't realize how different the early 116 pumps are. One very nice feature of that pump is that all the vacuum accessories are not dependent on the big line to the MC, so even if that line fails, you can still get vacuum to brakes and vice versa.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

so my vacuum pump saga is over.ive got a good used one in ,measures 25 vacuum,brakes work,shuts off very quickly,doors good,shifts better -its a miracle.after taking pump off 4 times finally realized there was a collar on old one that comes off and needs to be put on new one-duh.used new pump gasket with 6 holes and created 2 holes where guide pins go in, added some permatex to keep gasket intact and its good to go.this has taken me a week of figuring it out.now i can get pump in and out in 30 minutes,too bad i dont have to do it for a long time.so im proud of myself and grateful for this forum ,and phil.persisitence pays off.

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95 e320,87 sdl,79 300sd

I've heard a brown paper bag from a supermarket makes an excellent thin gasket. Anyone tried it?

I've used it for a reed in a foot valve and it works great.

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

When I was a kid we (the neighborhood gang) had an old Ford Model A. We used butcher paper for a head gasket, didn't last long but it was free and easy to replace

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

I've used a 12 pack carton's cardboard more than once. Better than nothing or waiting another day.

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"Knowing is not enough, we must apply.
Willing is not enough, we must do." Goethe

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1951 Chevy 3100

2003 Indian Chief Roadmaster

1983 GMC 1 ton Dually

1982 Chevy 1 ton Dually, service body (sold)

'90 GMC Suburban 6.2 "SS Veg-Burban"
(single tank WVO\diesel conversion) SOLD

'81 300D ~ Mama's car...my job (now my car)(but still my job) SOLD

'83 300sd ~ rescue car SOLD

2005 Ford Taurus (Mama's new car)(NOT my job!)

I always keep a roll of gasket material on hand.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Rosenfe, where did you source the rebuild kit, used one, etc.? Have the same pump on mine. Thanks!

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"Opportunity is missed by most people because it is dressed in overalls and looks like work" - Thomas Edison-
1979 300SD
1975 450SL
2014 Ram Cummins Megacab (tow rig)

bgiovan-i sent you a pm with info .

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95 e320,87 sdl,79 300sd

Might be good to add the info to this thread so future readers know how to source the rebuild kit.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13