Manual Controlled Tester
Quick Setup of Tester

Purpose:

To have a slight drag on the "flat" of the sliding gage pin 'F', at the same time that the full weight of the vertical shaft 'K' is on the specimen to be tested.

Process:

  1. Jog motor until rocker arm lift cam is at it's lowest position, so as to clear the cam follower bearing.
  2. Have the rocker arm setting on the flat of the sliding gage pin 'F'.
  3. Loosen the nose piece thumbscrew and the brass eeight screw that holds the vertical shaft 'K', then slide the vertical shaft 'K', up and down to get 'O' ring to rest on the specimen while the rocker arm touches the flat on "pin" 'F'.
  4. Re-tighten the brass weight thumbscrew.
  5. Turn the brass weight fine adjustment screw 'J' until the rocker arm has slight drag on the flat of the pin as you slide the pin in and out. This will set the rocker arm parallel with the base of the machine while the load is upon the specimen.
  6. Tighten the nosepiece thumbscrew against the vertical shaft to maintain this position.
  7. Move the sliding gage pin from under the rocker arm before running tests.

The older style machines can also be set this way, making the use of the rear indicator obsolete.

This adjustment will also have to be made if the specimens are different thickness.