Jonn has been working on the gearbox of our 1973 Rover P5. Here are his notes:
Take car outside and warm up. Test gearbox. Car pulls itself forwards and backwards at idle in forward and reverse gears respectively. Tighten connection to rev counter. Wire fans direct to ignition fuse. Refit dash trim. Check levels and top up coolant.
Diagnose knock when reversing. Warm car up and drive forward and backwards. Knock from? Only in reverse and only when applying throttle first time. Unless you lift off and accelerate again then it will knock again. Sounds and feels like gearbox. Get Rob in car and demonstrate what is happening and he agrees, it does sound and feel like a gearbox issue.
Drive around yard and align steering wheel. Remove and straighten and resecure. Refit centre horn push and secure.wheel. Remove and straighten and resecure. Refit centre horn push and secure.