19-09-2019, 01:28 PM
Having been precariously sealed for a few weeks with PTFE tape, the old 3/4 14 tpi gearbox plug was successfully replaced today by a larger one - 1/2" BSP - with the car over a pit. The original threads were very damaged and the old plug would only come out when pulled downwards whilst being rotated. Then, once the old oil had stopped dripping, an 18.7mm drill (with added grease to collect the swarf) was used to clean up the hole. Finally, a high quality tap (also greased) on a half inch rachet drive was used to create the new thread. This delicate and skillful operation was carried out by my friend Ken, in whom I have considerable confidence. A newly made brass plug with a nylon washer then sealed well. The oil level is back at 19mm below the top of the filler hole.