5 Spd Getrag Gearbox 717.420

Gerhard van Rooyen

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Helo

My gearbox is with acompany being overhauled. The replacement bearings from MB need to come from Germany and are hellishly expensive. I was thinking to go to Bearing Man to tray and match.

Any other alternative suggestions are very welcome.

Thanks.
 

Gerhard van Rooyen

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So I have asked a parts guy that I know to look into the problem of a 5th gear which the JHB dealer said they cannot get.
It seems like there are some of the parts that are out of stock both in SA and in Germany, the only way then to find out whether the part is obtainable or not is to put through an order to Germany and see what happens. I have recently done this with another part and it seems like it could be successful.

Regarding the 5th gear required - he could get a price of R8745, which is the last price the part sold for.

I will now try from all alternative MB Parts suppliers - any suggestions are very welcome!

*Could it be possible to machine such a gear if one had a good sample?
 

Andrew

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That gearbox has this unfortunate 5th gear reputation esp with more powerful engines.

There is a Mercedes (as opposed to Getrag) gearbox called 711.113 which is a strong reliable gearbox that takes both LH and RH starter engines that you might find to be a cost effective alternative. They are hens teeth in SA, but even so I have found two of them locally over the years. Otherwise they can be sourced in Europe for around €650 rebuilt, plus shipping, plus shifter, plus rods, plus bell housing, plus custom centre prop shaft.

Then: Dirk Wentzel and Tony Ackermann I believe, originally pioneered the recipe, and I know Alan has perfected it, to use a modern CDI C class 6 speed behind the M10x and M60x type engines. Perhaps this would be the best fit on your case? I am sure Alan can chime in re the costs and pitfalls.
 

Alan

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Yes Andrew, while I like the 6 speed I would have preferred the original 5 speed. Firstly the mods one has to do to fit it properly (includes a body lift).
And you now have 6 gears that are closer together but 6th gear is not as low as the 5th gear of the original box.
Problem with second hand gearboxes is that they might have the same issue as the one you are trying to replace. But one does get lucky.
 

Gerhard van Rooyen

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That gearbox has this unfortunate 5th gear reputation esp with more powerful engines.

There is a Mercedes (as opposed to Getrag) gearbox called 711.113 which is a strong reliable gearbox that takes both LH and RH starter engines that you might find to be a cost effective alternative. They are hens teeth in SA, but even so I have found two of them locally over the years. Otherwise they can be sourced in Europe for around €650 rebuilt, plus shipping, plus shifter, plus rods, plus bell housing, plus custom centre prop shaft.

Then: Dirk Wentzel and Tony Ackermann I believe, originally pioneered the recipe, and I know Alan has perfected it, to use a modern CDI C class 6 speed behind the M10x and M60x type engines. Perhaps this would be the best fit on your case? I am sure Alan can chime in re the costs and pitfalls.

This sounds like a specific supplier - do you perhaps have a name or alternatively point me in the right direction?
 

Gerhard van Rooyen

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Gents we have found two Companies that seem confident that they can manufacture the gear. They will confirm and provide a price once they receive a sample.

Are there any of you that would be interested in buying one as a spare while we are busy making them?
Please indicate interest asap. we can them confirm orders once we receive the price.
 

460LeoG

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I'm going with this as I cant stomach throwing a 5sp G gearbox to scrap because of one damaged gear...
 

Gerhard van Rooyen

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So Gear & Axle Centre in Durban can make the two gears which make up the 5th gear. The price for this (one set) is R3750 ex VAT. With more sets the price will come down slightly, how much depends on quantity.

Apparently gears have to be grinded to reduce operating noise - IE if gears are not grinded it will work fine but have a hum while engaged. This is apparently a very costly excercise.
The above price excludes grinding.

Firstly - If anyone is interested, please indicate to me by Thursday.
Second - If anyone knows of a place that can grind gears at a reasonable price, please let me know.

Thanks.
 

Gerhard van Rooyen

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The story and frustration continues.

Cape Gear Manufacturers assured me that they can manufacture the 5th gear and its matching gear, and that they are the only company in South Africa that can grind angled and helical gears. Isent them the old gears from the gearbox to copy from. After 8 months, many phone calls, messages and excuses I received the gears. Upon reassembly of the gearbox, Enduro Gearbox Centre in JHB (excellent service, highly recommended) let me know that the new 5th gears causes the box to not turn. the gears are not cut to the correct depth to mesh properly.

Ihave already spent a lot of money on the gearbox so abandoning is the last option.

So I am in a bit of a predicament. If anyone has any ideas or can point me in the right direction to find either working 5th gears for this gearbox, or another solution, please let me know.

GL275
717.420

I think that 717.421 and 717.422 has the same internals, not 100% sure.

TIA
 

Gerhard van Rooyen

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So according to Xentry the following 5spd gearboxes have the same 5th gear that I need for my gearbox:

G-Gearboxes:
717.420 (GL275) [230GE]
717.421 (GL275) [280GE]
717.422 (GL275)

Sedan - pre-W202 ie: 123, 124 - and I think some 126's also used some of them.
717.400 (GL275 A)
717.401 (GL275 B)
717.402 (GL275 C)
717.404 (GL275 E) 4-speed

If anyone has one of these gearboxes or parts of it that you don't need anymore, or where I can find this, please let me know.
 
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