The crank is already there. You need the oil can from the Trading Post in Dusty Gulch. If you recover the calf for the cowgirl in Rock Ridge, she gives you a saddle. You can swap this for both the oil can and the gold pan (but only one at a time).
Climb inside the clock tower and put oil on ONLY the middle row of gears until each one "shines." Then turn the bottom crank to rotate the gears.
just play the game and you will find out.;)
you climb up and find the secret entrance
Only oil the the groups that goes across the center, until they don't take anymore oil. Ignore the top and bottom egdes. Turn the crank and the clock will work.
Diamond plains
Enter the door where the worker is. You have to move some boxes to get there and avoid the dinky boards. Click on the back of the clock and pour the can of oil on the gears that run through the middle. Oil each one until the gears will take no more.
in diamond plains
go to the train station
The clock tower is in Diamond Plains, to the right of the section with the marshal's office and the saloon.
After you oil the clock gears the clock will strike 3:00.
the clock is in the tower. if you go all the way to your right they are doing construction and if you go inside theres the clock!
The oil can is used to oil the gears of the clock in the clock tower at Diamond Plains, so that the clock will work again.
You oil it.