Gearbox issue.

mwimab · Jan 2, 2013

Happy new year all!

Now a few days ago i lost 4th and reverse on my auto ZF gearbox.

The next morning i went out to the car and id lost all drive completely.
Today i have changed the gearbox oil, and the screen filter inside and refilled. I have 1st, 2nd and 3rd, but NO forth or Reverse still.

If in drive, and i flick the stick into 3rd it drops to second instead?

Any ideas?

Datatek · Jan 2, 2013

Selector linkage adjustment.

lorri789 · Jan 2, 2013

AYe, gear selector interlock. In the electrical bit of RAVE somewhere.

Datatek · Jan 2, 2013

lorri789 said:
AYe, gear selector interlock. In the electrical bit of RAVE somewhere.

It's a Classic so it could be all mechanical

mwimab · Jan 2, 2013

When i Rev in Reverse i can hear something in the gearbox trying, but nothing happens

Datatek · Jan 2, 2013

mwimab said:
When i Rev in Reverse i can hear something in the gearbox trying, but nothing happens

The main forward and reverse clutches are selected mechanically by the lever, if it's failing to select there would be no drive, likewise if it's the pre-electronic mechanical selection box you would also get the wrong gear in other positions.
I suppose it's got enough oil in it?
Try a PM to james martin he's the auto box guru.

mwimab · Jan 2, 2013

Ok will do. Thanks for the help

mwimab · Jan 2, 2013

It drives and pulls fine in 1st, 2nd and 3rd.

How many clutch's are in it? If theres 2 would this mean 4th and reverse use the same clutch?

ovalandrover · Jan 2, 2013

What was the oil like when you drained it did it smell of burnt clutch and was it a nice clear red or a dirty brown?

joe1972 · Jan 2, 2013

mwimab said:
Happy new year all!

Now a few days ago i lost 4th and reverse on my auto ZF gearbox.

The next morning i went out to the car and id lost all drive completely.
Today i have changed the gearbox oil, and the screen filter inside and refilled. I have 1st, 2nd and 3rd, but NO forth or Reverse still.

If in drive, and i flick the stick into 3rd it drops to second instead?

Any ideas?

The linkage from gear selector to autobox is mechanical on a classic.
You having nothing to loose by checking all is well in terms of linkage connection, however...
It sounds like a clutch pack has gone awol. Changing the fluid n filter probably moved the crap around in there, but ultimately it's probably time to get a replacement box.

Datatek · Jan 3, 2013

mwimab said:
It drives and pulls fine in 1st, 2nd and 3rd.

How many clutch's are in it? If theres 2 would this mean 4th and reverse use the same clutch?

There's a forward clutch and a reverse clutch, then in forward you have the clutch combinations to give the different ratios.

Gearbox issue.

mwimab

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Datatek

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lorri789

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Datatek

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mwimab

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Datatek

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mwimab

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mwimab

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ovalandrover

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joe1972

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Datatek

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