Ok, so I pulled the valve body for check / cleaning and to see whether the seals on the accumulator piston were cracked / bad. The piston seems to be sloppy in the bore and so I called the dealer and gave them the part number to order a replacement....they said it was unavailable.

Actually, I wouldn't mind replacing all the piston seals, but I'm not sure if they're available.

part # 1262775332

Any ideas about what to do about this?

Thanks

Steve A

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Steve A
92 W140 OM603
97 VW Jetta TDI
90 Passat variant TDI 6 speed MT
94 Chevy K1500 6.5TD
05 E320 CDI
+ others

A picture of the part might be handy, so we all don't have to log into EPC to see it.

Might one of the "shift kits" have the parts you seek?

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James Marriott
2003 Buick Regal
1983 300D (228k, frau Auto)
1996 Suburban K2500 (192k, 6.5 turbo diesel/4WD towmaster 10,000)
www.engineeringworks.biz
1987 300SDL junker 170k
1982 300SD junker, 265k

You can't see it on EPC, the trans valve body breakdown doesn't go far enough. The part number is from the piston itself.

It looks like a K1 / K2 piston except it's beige and not quite as large.

Thanks
Steve A

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Steve A
92 W140 OM603
97 VW Jetta TDI
90 Passat variant TDI 6 speed MT
94 Chevy K1500 6.5TD
05 E320 CDI
+ others

Maybe the Superior shift kit has that piston -

http://www.peachparts.com/shopforum/showthread.php?t=237763

Sixto
87 300D

Thanks Sixto, I already perused all of the trans threads I could find looking for some reference to this particular piston. I'm not sure if the superior shift kit has anything other than springs but I will take a closer look.

Steve A

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Steve A
92 W140 OM603
97 VW Jetta TDI
90 Passat variant TDI 6 speed MT
94 Chevy K1500 6.5TD
05 E320 CDI
+ others

Many pistons in an auto trans appear "sloppy", sometimes they are made like that & use the seal to support them. There are plenty of junked trans about, maybe you need to see if you can find another trans & have a look at the part.

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Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving

I would love to, however, in my neck of the woods there aren't all that many junk MB (ZF) transmissions to pick from. Yards around here don't keep core piles of anything anymore, they all send it to scrap processing as quickly as they can. I might know of one trans that wouldn't yet be gutted, I'll have to check and see. Thanks for the tip, it jogged my memory about a car I know of, unfortunately I think it's standing in water right now, which makes getting the valve body a pita.

steve a

__________________
Steve A
92 W140 OM603
97 VW Jetta TDI
90 Passat variant TDI 6 speed MT
94 Chevy K1500 6.5TD
05 E320 CDI
+ others

650-348-3990

http://www.peterschmid.com/

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'84 300SD sold
124.128