Trouble Shooting Article Correction
Thanks go out to a sharp-eyed reader in Texas who noticed a typo in "Your Basic Model T Service, Safety & Troubleshooting Guide" on page 27. In the Oil Leaks (Starter) section it should have listed the cover screws as 14-24 instead of the modern 12-24 size.
Trouble Shooting Article - Additional Info
We heard from a few people about shining up brush style timer bars and contact brushes with 100 grit sandpaper as suggested on page 32 under the Commutator (Timer) Service section. This was the author's recommendation, however it may vary depending on the type of timer you have. There will always be differences of opinions. While it is usually best to follow the manufacturer's recommendation, you might start with a finer grit emery cloth initially and progress to medium until you achieve the smoothness you need.
As for oiling, again check to see what the manufacturer says. New Day timers have a brass brush and do not necessarily require oiling.
TW type timers have a carbon brush. The housing and contacts can be cleaned with mineral spirits and polished with a medium grade scouring pad. The carbon brush does not need cleaned or polished and should be kept dry, not oiled. It is also important to make sure you have a modern type oil seal installed in the front cover to ensure no oils gets into the timer housing. Oil will cause a problem.
And of course, Do NOT sand, clean or oil the maintenance Free E-Timer or I-Timer! Installation of a modern oil seal is still recommended on CAM the front cover to ensure no oil gets into the timer housing.