Timepieces are like any other machines, they need regular maintenance (2-3 years) to function properly and the fact that they have run without service for the last 30 years, and now mysteriously stopped, its really not a surprise!
- Lubricate your clock front (behind dial) and back sides,using high quality oil and grease. Correct amount of oil needed for every pivot hole:
- lack of oil means shorten run life and more wear
- to much, and oil will run down on the plate, out from pivot sink, creating a mess and leaving almost dry pivot behind.
- also escapement , levers, ratchets, striking and chiming systems, etc. must be oiled/greased.
Professional help advised.
DO NOT SPRAY WD-40 OR OIL ON CLOCK MOVEMENT
Spraying the clock movement with oil or WD-40 achieves nothing, but a problems. It actually accelerates the wear on the pinions because works like a dust magnet. For example, it's like opening the hood of a car and throwing a bucket of oil at the top of the engine instead of normal oil change.
WD-40 stands for "Water Displacement, 40th formula" it contains less than 25% of mineral oil and works like a grinder on rotating pivots and pinions. WD- 40 as bad for the clock, as an amateur with garage tools, who think's if he can change spark plugs, he can fix clocks!