Hi to all who may read this. I have a 2010 Jungheinrich TFG316S with a hydrostatic drive. The serial number is FN412924.
It is an ex Asda fleet truck with approximately 9000 hours.
The problem seems to be that for whatever reason, the hydraulic line which pressurises the brakes to disengage the parking brake is only releasing one side. I initially thought it was a mechanical fault specific to the nearside brake, however this morning it locked the other side, then unlocked both before returning to it's nearside locked state. Hope that makes sense!

I called a local forklift service engineer who wasn't very complimtary of the amount of electronics on the truck, then disappeared to call some friends who might be able to give him some ideas.

Any advice received would be very much appreciated. Thanks.