Mitsubishi Electric LY2-3750-B1T Instruction Manual page 12

HOW TO USE
3 . Installing the feed regulator bracket
Should it be necessary to dismount and the feed
regulator bracket and its related parts, use the
procedure explained below.
Note: If the feed regulator bracket is poorly
positioned, the resultant alternating movements
may be too short or long, causing defective
machine operation.
( 1 ) Set the clearance between special screw
Ⓐ located on the regulator stud and the
side wall of the machine arm to 26.5 mm as
illustrated to the left. (Use a 26.5 mm spacer
between these parts. This facilitates the
operation.)
( 2 ) With the feed regulator stud held as
explained in step ( 1 ) above, adjust the feed
regulator bracket. This adjustment should
insure a clearance of 12 mm between
the periphery of pin Ⓑ located on the
feed regulator bracket and the top cover
mounting face located on the arm. Tighten
screws Ⓒ.
4 . Feed pitch adjustment of feed foot
The ratio of the upper feed amount (of the feed
foot) to the lower feed amount (of the feed dog)
has been adjusted to 1:1. However, the feed foot
feeding amount can be increased or decreased
depending on the operating conditions.
( 1 ) Loosen the nut located on the upper feed
rock shaft crank (left), and shift to adjust
the position of the square block upward or
downward.
Upper position: Feed pitch → Small
Lower position: Feed pitch → Large
Ⓑ
Ⓒ
12 mm
Nut
— 9 —
Feed regulator stud
26.5 mm
Ⓐ
Feed regulator bracket
Upper feed rock
shaft crank (left)