Mittler Bros Machine & Tool 550 - Manual (Page 3)

GENERAL MAINTENANCE
Before using your Shrinker or stretcher a small amount light weight grease as outlined below make your tool work smoother
and prevent wear.
Lubricate (light weight grease) the pivot point between the pressure arm (#2) and the fulcrum arm (#3).
Lubricate (light weight grease) on Shrinker Upper & Lower Pressure V Block (#12 & 12A).
Lubricate (light weight grease) on Stretcher Upper & lower Pressure Block (#156 & 156A).
Clean the jaws occasionally. Blowing them out with an air hose helps but it doesn't do the job thoroughly. Vacuuming helps to
get filings out. The best way to maintain the jaws is to periodically disassemble them and clean as follows:
1. Remove Shrinker or Stretcher cartridge (cover/jaw assembly) by loosening four socket head screws.
2. Take out upper jaws and V blocks (Shrinker) or upper jaws and pressure block (Stretcher) as a single
assembly. Be careful! DO NOT lose the spring between the jaws!
3. Remove suspension wire.
4. Take notice as to how the Shrinker jaws are inserted. A small jaw is opposite a larger jaw, top to bottom.
5. Clean the two upper jaws with a non-hazardous metal cleaner and a file card (brush). DO NOT use a wire
brush or a wire wheel.
6. Always brush in the direction of the Teeth (with the grooves).
7. Clean the V block (Shrinker) or pressure block (Stretcher).
8. Re-assemble the upper jaws and set aside.
9. After removing the two machine screws at the lower end of the cover, remove the bottom jaws by lifting and
taking out as a single unit with the V block (Shrinker) or pressure block (Stretcher). Clean all as described
previously.
10. Replace jaws. Be careful to locate larger Shrinker jaw opposite small Shrinker jaw. When replacing the V
blocks (Shrinker) or pressure blocks (Stretcher), chamfered corners face front.
11. 0il jaws lightly when not in use for extended periods.
12. For best operating results, clean the jaws after every job.