countersinking for a duplex chain
Posted: Tue Aug 30, 2022 10:01 am
A couple of pictures for Nettie.
The plate was countersunk off the engine but can be done fitted. Use a vacuum cleaner to remove the swarf whilst countersinking.
The countersink being used is the correct 82 degrees for UNF screws but a 90 degree will suffice. Loctite the screws in place.
When fitting the duplex gears make sure that the teeth are aligned using the shims between the crank sprocket and crank shoulder.
This is the correct BMC spanner but a deep impact socket or heavy duty ring spanner will suffice.
- Front engine plate countersink 6.jpg (52.84 KiB) Viewed 276 times
- Front engine plate countersink 7.jpg (73.03 KiB) Viewed 276 times
The countersink being used is the correct 82 degrees for UNF screws but a 90 degree will suffice. Loctite the screws in place.
When fitting the duplex gears make sure that the teeth are aligned using the shims between the crank sprocket and crank shoulder.
This is the correct BMC spanner but a deep impact socket or heavy duty ring spanner will suffice.
- Crankshaft bolt spanner 1.jpg (71.58 KiB) Viewed 273 times