I have been passed this problem by email and I'm wondering if anyone has an answer.
We have a problem with the gearbox on Nicholas's Ferret. we've stripped it down and replaced the brake bands on 2nd gear (worn to nothing so couldn’t select 2nd gear).
Having re-assembled it, we can select 1st to 4th no problems (have adjusted the bands and bus bar clearances), but 5th gear will not engage.
When selecting 5th the bus bar rises and the pull rod starts to move the 5th gear clutch, but it all locks up before fully engaging.
The adjuster ring looks out of position to the photo’s we took before the strip down. The pull rod is well down the adjuster ring thread. If the ring is tightened up, then the bus bar and pull rod simply locks up without moving.
We cannot see anything misaligned in the 5th gear pull rod, hooks etc. Could something have slipped in the 5th gear clutch plates when the box was lifted off the gear train?
Any other ideas? Can you pass this on to anyone who can help please.