TwinDisc transmission on Cummins engines, GB 36 Classic

[jimgram]

I'm installing ZF Marhers MicroCommder electronic servo-controls on my GB 36 Classic with twin Cummins 5.9 210hp engines and TwinDisc transmission.
I don't know how these transmissions work but guessing that 'fwd' is a mirror image of 'rev' (mechcanically speaking). I think the starboard prop turns CW and the port prop turns CCW. True? So the clutch lever on the port engine is pushed in the opposite direction of the starboard transmission for both engines/props to drive the boat forward or reverse?

 

[O C Diver]

I would contact customer service of the controls to see if they have information for installation on your transmissions. Some companies do a great job with support materials and technical support.

Ted

 

[Papas]

I have the twin disc / ZF Mathers MicroCommander controllers on my boat with counter rotating props, and yes, the clutch levels move in opposite directions when both controllers are in FWD or REV.

 

[DDW]

I thought the Twin Disc transmissions were controlled hydraulically (with solenoids, no levers). Mine is.

 

[Mac2]

My 1998 Twin Disc are levers.

 

[JackConnick]

My 1991 has levers.

 

[Papas]

Mine (Mathers 585CE) are twin lever electronic controls with servo's connected to push/pull cables which then connect to the engine accelerators, the transmission shifter and the transmission trolling valve (an option which I have).

 

[Raffy]

I am a ZF Mathers Distributor and have over 35 years experience on these controls and gears. So first let me state there is no forward or reverse on a marine gear. There is A rotation and B rotation, and these gears can be run in either rotation at full throttle. That is how you get different rotations out of the same transmission. When installing the Microcommander the easiest way to find which way the shift lever moves on the transmission in the ahead position is to move your old mechanical lever and then mark the transmission with F or R with a marker. Now if you don't have anything attached to the transmission you can install the MicroCommander as you always mechanically adjust the cables to go on at Neutral & Idle then you never touch the cables again. All future adjustments are made in the MicroCommander. If you crank your engine and bump it into forward and it goes into reverse it is a simple adjustment in the MicroCommander. These unit are designed to fit any Engine/Transmission application requiring a throttle and shift cable. Hope this information helps clarify the installation.