Sharp SH-920 Instruction Manual page 24

Table longitudinal traverse (Fig. 7a, 7b, 7c)
7.
7.1 Switch on power source "SB1"
7.2 Switch on hydraulic pump motor, "SA2"
7.3 The table directional arm L2 should be able to turn for left of right an angle
about 15 degrees from its neutral position.
7.4 Turn clockwise the table longitudinal control level L1 slowly until the table
starts to move, the table will get its maximum speed when it turns to 90
degree.
7.5 If the table starts jerkily, there may be some air bubbles in the hydraulic
system. The air bubbles can be removed easily if you operated the table at
slow speed with its full stroke and stop a little while at both ends, repeat
these processes several times.
7.6 If the table dogs T1, T2, fixed on the table T-slot, bump against table
directional arm L2 due to some causes, L2 will slip out an angle from
direction control shaft L3 (see Fig. 5a) and cause the table unable to travel
automatically. In such case, the remedy is as followings:
7.6.1 Turn L1 to its valve closing position (pump is in operation) to stop table
moving.
7.6.2 Take away table dogs T1, T2 or move it apart from L2, this is necessary
for avoiding fingers being clamped by table dogs and L2.
7.6.3 Take off arm L2 from its shaft L3 (Fig.5d) and turn L3 to a position with
its marked line in a perpendicular direction as shown in Fig.5b. then re-
put L2 on L3 in its correct position (as Fig.3)
7.6.4 Turn L1 by left hand about 60 degrees for low table speed.
7.6.5 Turn L2 right and left (about 15-20 degrees) by right hand, if still can't
make the table move right and left, adjust L2 to other position on L3
and try turn L2 right and left again. Time after time you can find the right
position for L3.
7.6.6 Disassemble L2 from L3 (Fig.5d) and adjust L2 at its right position and
then secure it firmly on L3.
7.6.7 During this adjusting process, it needs that with left hand to control L1,
and right hand to turn L2 simultaneously.
7.6.8 This is a troublesome work, and requires lots of patience to try again
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