OPERATION:
Grip-Master units are adjusted for proper holding pressure at
the time of assembly. Increased pressure can be obtained by a
slight- counter-clockwise turn of the adjusting screw (after first
loosening the cover plate). Decrease pressure by a clockwise
turn of the adjusting screw. The amount of turn necessary can
be determined by the results obtained. The maximum pressure
setting is not necessary for adequate holding power. If it is
difficult to depress the locking lever, the setting is on the heavy
side. When just normal hand pressure is required to lower the
lever to horizontal position, this is the proper setting of the
adjusting screw. It is best when re-setting the locking
mechanism to adjust to absolute maximum, then reduce
pressure down to about middle range for ease of operation.
Turning too far in either direction will cause the center bar to
lock. For maximum machining accuracy, clamp vise to the
work table using the two side lugs.
MAINTENANCE:
The locking mechanism of Grip-Master units must be oiled
occasionally in the oil hole provided therefor. Keep bars and
locking mechanism free from dirt and chips.
If a Grip-Master unit becomes inoperable, disassemble the
locking mechanism in this manner:
1.
To remove center bar (3) of a vise, place handle in locked
position and remove the shoulder screw which attaches it to
the movable jaw. (On models prior to 1958, the center bar was
press fit into the movable jaw; bar can be removed by inserting
a 1/4" pin in the knock-out hole in the movable jaw casting.)
2.
Place handle lever (5) in vertical position.
3.
Remove screws and cover plate (20).
4.
Remove spring pressure on locking ring (6) by turning
adjusting screw (17) counter-clockwise.
5.
All locking mechanism parts can then be removed.
Clean and check each part for wear or damage. Replacement
parts are available for immediate shipment from factory stock,
or you may order through your local Heinrich distributor.
REASSEMBLE all parts of
Standard Locking Mechanisms
as per the exploded view, setting adjusting screw to desired
(Cont. on next page)
