ZF 4hp 22 TQ Lock up LR Disco 1 3.9 EFI

[jimbob]

Hi,

Ive got a strange problem, tranny has 50,000 km on it after a stage 1 rebuild, by a well known re-builder.

Last week just pulled of from a start, and my TQ lock up point has moved from 80 - 85km/h down to 65 - 70 km/h.

No gears are slipping still pulls well, dropped the fluid still cherry red no bits in the ATF so i'm lucky there!

Speaking to ZF for a list of parts i need, at present looking at the governor end / the three O rings, this assembly locks up the TQ.

Am i on the right track, is there anything else apart from a blocked filter, that could cause this?

Cheers

Jim

[jimbob]

After stripping the rear off the autobox i found three O rings that were torn up, that are all part of the mechanical governor.

Refitted with new from Jpat in Bristol drives like new, smooth gear changes every time.

Well pleased.

[ChrisJC]

Good news.

Chris.