Gig Adjustment; Belt Tensioning And Replacement; Rail Alignment And Rotation; Maintenance & Adjustments - Foley United 388 Assembly And Service Manual

MAINTENANCE ADJUSTMENTS
GIB ADJUSTMENT
The four gib set screws should be adjusted by loosening the
four lock nuts and then turning in the set screws while turning
the horizontal infeed handwheel. Adjust the gib for a snug
movement of the slide and gib. To adjust all four set screws, it
will be necessary to move the slide from front to back. NOTE:
The slide must be fully in front of the gib screw when making
adjustments. DO NOT adjust the gib screw without the slide
positioned adjacent.

BELT TENSIONING AND REPLACEMENT

To adjust belt tension loosen the two set screws on the Head
Support and push the grinding head forward to tension the belt,
making sure to hold the head square and retighten the set
screws. Head squareness is shown on page 7 of the Operator's
Manual. After correctly tensioning the belt, check your tension
with a
5 lbs [2 kg] load applied approximately in the center of the belt,
you should observe 1/8" [3 mm] of deflection. See FIG. 17. To
change the belt, remove the two belt guards, and loosen the set
screws on the Head Support. Push the grinding head in against
the internal spring and remove the belt. Install the new belt
and reverse the sequence making certain to reinstall the guards.
DO NOT OVERTIGHTEN OR PRY ON THE
GRINDING HEAD TO TIGHTEN. DAMAGE
COULD OCCUR TO THE MOTOR OR GRINDING
HEAD BEARING.

RAIL ALIGNMENT AND ROTATION

The front (away from the operator) carriage rail is adjustable
in horizontal and vertical planes. The rear rail (nearest the
operator) is adjustable only in the vertical plane. Using a
PRECISION straight edge adjust the rails using the set screws
(#54) and locknuts (#57) as shown on pages 16 and 17.
After extended use, the carriage bearings will start to wear tracks
into the carriage rails. To minimize this, it is recommended that
once a year or every 300 hours of operation the carriage rails
should be turned. Loosen the set screws holding the carriage
rails and turn the rails so the bearings run on a new track.
Retighten the set screws. After rail turning, recheck rail
straightness.
9
9
FIG. 17