W123 transmisison overhaul - Use your Indie Benz Specialist

1976-1985: 230T, 230E, 230TE, 230CE, 280E, 280TE, 280CE, 240D, 300D, 300CD, 300TD,
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Joined: Sat 25 Apr, 2009 9:32 am
Model you own: w123
Location: Melbourne, Vic

W123 transmisison overhaul - Use your Indie Benz Specialist

Post by tsharkey » Thu 10 May, 2018 1:45 pm

A year ago, I called an Auto Transmission specialist to get the 722.117 transmission overhauled. It was leaking oil, flaring and reverse was as weak as. They quoted the different benz boxes over the phone and seemed to know what they were on about.

At the time of pickup, all looked in order and for 11 months everything seemed OK. Then ....

1. There was a shudder when taking off under load
2. The shift points changed when the engine was cold (coming in OK when warm)

I took it back to them and the was a very strong reluctance to take this on board. They took it for a drive and claimed the shudder was normal and the diesel was too weak to get the gear box to change gear :bs: . What to do ....

This is a daily driver that does a power of work and we didn't want it off the road for any length of time.

So I took it back and they "adjusted" something. :argue: A few days later, the shift points permanently were too high and reverse disappeared.

I took it to an independent benz specialist, asking "do you do transmissions". He looked bemused and said, we do everything on new and older benzes because their components are unique to them. Looking around his shop, there were many older benzes and he could show me a couple of torn down transmissions.

In the end, the shift points was a worn o-ring on the modulator
Reverse failed due a broken band adjustment pin - they must have cranked it to the hilt
The rear transmission mount was twisted as they had installed it incorrectly
The exhaust bracket was that runs off the rear cross member shared with the trans was missing all its rubber bushings

To be fair to the transmission folk, the shudder whilst not normal, was not their fault - a worn centre bearing on the tailshaft.

I am not 100% sure what my "fully reconditioned" transmission job actually bought me.

So, if you have require a trans repair , would recommend your local benz indie over the transmission specialist any day
W123 1981 300TD - Family Kid mover
W202 1998 C250D Factory OM605A Turbo - Partner's daily driver
W123 1982 300CD Retro fitted OM617A Turbo - Mine
W123 1984 300TD English 5 Speed Manual
W123 1982 300TD Factory OM617A Turbo (Hans) - Project
W123 1982 300D - OM617 NA (Hektor) - Son's
W123 1985 230TE - Brother's
W123 1985 300D - Sister in Law's
1962 S-Series Valiant (Tho Daimler & Chrysler divorced, still part of the extended family)

Past benzes
W114 1969 250CE - PO put in an M110 transplant and nearly sent me around the bend
W123 1981 300TD - "Matilda" - RIP hit front side & rear but left my brother + niece A-OK

Current Projects
Coupe restoration, Turbo Wagon freshen up

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Posts: 635
Joined: Thu 16 Jun, 2011 10:53 am
Model you own: w126
Location: Back in Adelaide.

Re: W123 transmisison overhaul - Use your Indie Benz Specialist

Post by julian » Sun 13 May, 2018 7:51 pm

A costly lesson, but thank you for sharing mate.
w123 240D auto Lang
A Discovery 3
An Outback 3L
Previously: 1977 300D, 1979 300TD, 1982 280SE, 1988 560SEL

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