Komatsu H75051 Operation & Maintenance Manual page 411

ATTACHMENTS AND OPTIONS
6.
Loosen the nut (1), and adjust the position of proximity
switch (3) so that the rear end (A) of the bar (2) is matched
to the center of sensory surface (B) of the proximity switch
(3).
7.
Adjust the range "c" with nut (1) so that the tip (C) of pro-
tector (5) protrudes 0.5 to 1.0 mm from the sensory sur-
face (B) of all proximity switches (3).
8.
Loosen the bolt (4), and adjust the clearance "d" between
the bar (2) and the sensory surface (B) of all proximity
switches (3) so that it is within 3 to 5 mm, and fix it.
Tightening torque: 14.7 to 19.6 Nm {1.5 to 2.0 kgm}
9.
After adjustment, run the engine to raise the boom. Check that the lever automatically returns to "HOLD"
position at the point where the fork becomes horizontal, when tilting back the fork after fork DUMP opera-
tion.
LOADING AND UNLOADING OPERATION
The following is the explanation how to operate the fork but it does not explain all of the occasions. It may vary
according to the work situation.
Perform the operation of the fork by the most safe and efficient way in each situation.
HANDLE FORK
6-11