'89 560sel, 113,000 miles. front of suspension pump leaking. I've seen several threads mention re-sealing the pump, nothing about how or whether there may be a repair kit. Does not seem to be leaking into the engine, only all over the outside. Thanks.

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Earl McLain
'02 C230 Kompressor
'89 560 SEL "Frau BlueCar" (retired April 2004)

Never seen an external leak from any of those pumps, all the same way back to 1976!
Only replacement parts are an O-ring, shaft seal, & mounting gasket.

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

Kind of figured that given the low number of posts. Have had a little fluid in that area for the 3 years i've had the car, but everything was clean after the timing chain job, and i can see that only the bottom half of the susp pump is getting oily. hydraulic reservior lowers slightly each day, and the drips dropping from the trans cooler line have that sticky feel of Febi suspension fluid. P/S fluid is staying level and the loss would be too small to notice in as engine oil rising. Don't see the mounting gasket as a FastLane item, and there are 5 or 6 pages listed in PartShop when i search for "gasket", no clue which of 50 or so it might be!! Would a gasket sealer work there?

__________________
Earl McLain
'02 C230 Kompressor
'89 560 SEL "Frau BlueCar" (retired April 2004)

MB part numbers are 001-997-01-47 for the pump shaft seal.
010-997-43-45 for the o-ring.
114-236-00-80 for the mounting gasket.

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

greenacres,
DId this exact job, The problem is that the seal is done through good machining with rubber only working to support the good tight machine fit. I had no luck resealing mine. It slowed down but did not stop. I found a used pump for $100 and popped it on, now the engine is dry as a bone. I talked to my mechanic and he said when these usually leak from the front seal they are almost impossible reseal. The rear seal is easier to do and can be rebuilt more sucessfully.
m

__________________
Martin Ingram
Colorado Springs
2005 320 CDI
2006.5 VW Jetta TDI
1991 560SEL (179000 Sold)
1972 280SEL 4.5 ('The Lead Sled' 320000 miles when sold.)
1972 220D (225000 when sold)

I'll keep an eye out for a used pump. If the failure rate is very low, should be a safe bet when i find one.

__________________
Earl McLain
'02 C230 Kompressor
'89 560 SEL "Frau BlueCar" (retired April 2004)

Spent much of saturday chasing little drips. In the process, i'm thinking it is more likely P/S fluid than hydraulic fluid. The P/S pump was pretty clean, but the area around the low pressure return hose is the wettest. Since the P/S fluid looks so much like the hydraulic fluid, is there any way to dye one of them to get a better feel? Given the location of the seepage, the fan blows it all over once it's out. Thanks.

__________________
Earl McLain
'02 C230 Kompressor
'89 560 SEL "Frau BlueCar" (retired April 2004)

not sure of using a dye, but low pressure hose replace ment is easy and very cheap@$15 for the hoses and 40 mins to do the work.
m

__________________
Martin Ingram
Colorado Springs
2005 320 CDI
2006.5 VW Jetta TDI
1991 560SEL (179000 Sold)
1972 280SEL 4.5 ('The Lead Sled' 320000 miles when sold.)
1972 220D (225000 when sold)