4 speed gearbox noise

[rdssdi]

My 1969 +2 developed a whine from the transmission on deceleration only in all gears. I have removed the engine and transmission and I have disassembled and inspected the transmission.

The only fault I could find was what I believe to be excessive play of the main shaft. It can move in and out around .040 inches. All else appears normal.

Anyone solve a similar problem?

Bob

[EPA]

Have you checked the diff, it could be the nut on the pinion bearing coming loose and allowing movement on and off load.
Good luck
Ed

[rdssdi]

It sounded as if it was coming from the transmission. It was driven by me and a mechanic. Same conclusion.

The nut securing the diff flange is secure.

It is possible that the diff is the source of the noise and I and the mechanic are incorrect. Most people I speak with are uncertain as a deceleration noise in all gears is unusual.

Bob

[oldelanman]

Check the diff mountings and tie rod rubbers - if they are loose or worn the diff could be touching the chassis on over-run.