Gearbox reverse switch

[JohnnyMac]

Probably like blowing in the wind but still trying to find a Syncro reverse switch (191919823D). Bought a whole gearbox hoping that the switch was a good one but unfortunately it was just as faulty as mine. Now have a gearbox for sale. The 823 switches operate the relay but in first gear it does not release the diff lock. Not sure how long the diff would stay locked when going forward.

[Chris S]

It will not release the diff lock until you select 2nd or 3rd gear, it is not supposed to, it keeps the diff locked in 1st so you have more chance of rocking a stuck car out when it is sitting in deep ruts

[JohnnyMac]

Hi Chris, Well thats interesting as I had presumed it did the opposite as on page 73 (89 Instruction manual) 67 (88 instruction Manual) it says the gear lever must be moved into 1st gear to switch off the rear wheel lock then on Page 122 / 113 says engage 2nd or 3rd gear to release lock but also to reintroduce freewheel action 1st gear to be selected briefly, all a bit confusing really. I am just waiting to receive a wiring schematic book for this model so I will be interested to see how all this operates. But as you have indicated it makes more sense for 1st gear to continue with the diff locked. So now I am presuming that going into 2nd or 3rd there will be no further electrical contact and the vacuum will just die away naturally – maybe wrong but I cannot see any switch operation in these two gears. Thanks for your reply Chris – always a minefield of information.

• This reply was modified 4 years, 8 months ago by JohnnyMac.

[Chris S]

Any chance you can scan the manual for all of us on here please?

[JohnnyMac]

Well I have photoed the relevant bits but for some reason I cannot send them

[JohnnyMac]

Will try again in different form

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[JohnnyMac]

Well not very clear I am afraid but most must have a Golf Instruction Manual to view the relevant bits.

[LD50]

* rotated the pics for easier viewing

My website | My Youtube channel (both mostly bike related)

[JohnnyMac]

A couple more which had me thinking

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[JohnnyMac]

Circuit diagram is useful if one has to have the diff locking on a separate operating switch

• This reply was modified 4 years, 8 months ago by JohnnyMac.

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[LD50]

just a thought re the reverse switch – could we perhaps 3d print a copy of one if we had one to work from?

idk solidworks or cad packages particularly but i have a friend wiht a 3d printer if someone can work up the model?

• This reply was modified 4 years, 8 months ago by LD50.

My website | My Youtube channel (both mostly bike related)

[Chris S]

it is not usually the switch body which wears out but the small return springs rust out & the internal electric connections get dirty & no longer connect to make the circuit(s).

Good idea though, there must be lots more NLA small plastic parts that could be 3D printed?

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