Ponton Hydrak issues !

1953-1961: 180, 180a, 180b, 180c, 180D, 180Db, 190, 190b, 190D, 190Db, 220a, 220S, 220S cabrio., 220S coupe 220SE, 220SE coupe, 220SE cabrio.
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efirestorer
C Class
Posts: 46
Joined: Sat 26 Sep, 2009 11:21 am
Model you own: w180

Ponton Hydrak issues !

Post by efirestorer » Sun 24 Apr, 2016 10:22 am

A cautionary note for hydrak owners. Recently became aware of a Hydrak car being sold for less than reasonable because owner had problems with gear change and wanted to be rid of it because of the gear change problems. He had tried another gear box but that did not solve the problem. Not many understand hydraks , in his case had he spoken to an understanding person , he could have been advised not to bother changing the gear box but to concentrate on getting the vacuum system up to scratch - much simpler than changing a gear box. He did try a different vacuum power cylinder - but not a NEW one - much better to do a simple check of rubber diaphragm by disconnecting clutch connection rod and vacuum pipe - then pushing in stub of rod and then holding thumb over vacuum entry point ( blocking it ) - if the rod then moves out - LEAKING diaphragm which is an easy fix - much better than changing gear box. Also you should check that vacuum reservoir is not leaking - a little more fiddly but still much easier than the gear box. Any leaks lead to gear change and engine running problems.
The less than reasonable was I believe $3000. a not inconsiderable sum to miss out on - though then a bargain for the new owner.
Hydraks do perform brilliantly but need attention to the vacuum system more than anything else.

220SEB
C Class
Posts: 39
Joined: Tue 16 Feb, 2016 4:59 pm
Model you own: I don't own one

Re: Ponton Hydrak issues !

Post by 220SEB » Sun 24 Apr, 2016 9:58 pm

efirestorer wrote:A cautionary note for hydrak owners. Recently became aware of a Hydrak car being sold for less than reasonable because owner had problems with gear change and wanted to be rid of it because of the gear change problems. He had tried another gear box but that did not solve the problem. Not many understand hydraks , in his case had he spoken to an understanding person , he could have been advised not to bother changing the gear box but to concentrate on getting the vacuum system up to scratch - much simpler than changing a gear box. He did try a different vacuum power cylinder - but not a NEW one - much better to do a simple check of rubber diaphragm by disconnecting clutch connection rod and vacuum pipe - then pushing in stub of rod and then holding thumb over vacuum entry point ( blocking it ) - if the rod then moves out - LEAKING diaphragm which is an easy fix - much better than changing gear box. Also you should check that vacuum reservoir is not leaking - a little more fiddly but still much easier than the gear box. Any leaks lead to gear change and engine running problems.
The less than reasonable was I believe $3000. a not inconsiderable sum to miss out on - though then a bargain for the new owner.
Hydraks do perform brilliantly but need attention to the vacuum system more than anything else.
Hi I'm in the market for a Ponton, is it on Gumtree or?

Rodney

efirestorer
C Class
Posts: 46
Joined: Sat 26 Sep, 2009 11:21 am
Model you own: w180

Re: Ponton Hydrak issues !

Post by efirestorer » Mon 25 Apr, 2016 9:44 am

Sorry 220SEB , car has been sold at the reduced price - new owner should by now have a well sorted Hydrak.

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Mercmad
Mercedes Demigod
Posts: 7931
Joined: Sun 11 Sep, 2005 9:01 pm
Model you own: w109
Location: Brissy
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Re: Ponton Hydrak issues !

Post by Mercmad » Thu 19 Jan, 2017 7:07 pm

thats a pity, it's not complicated to repair but getting the gearbox out sometimes involves a bit of labour. The vacuum tanks do rust over 60 years and should always be checked.

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