WARNING:
To adjust mounting plate low speed rotation, proceed
as follows:
ELECTRIC SHOCK can kill; MOVING
PARTS can cause serious injury.
•
Do not touch live electrical parts.
•
Keep clear of pinch points.
Turntable operation is required to properly adjust moun-
ting plate rotation speed.
1. Remove front cover from turntable chassis.
2. Depending on the amount of weight on the turn-
table mounting plate, adjust time-delay relay set-
ting (see Section 3-5).
4.
Manually run the program for rotating the moun-
ting plate using the BLOCK FORWARD CON-
TINUOUS mode to check the time-delay relay
setting that keeps the high-speed valve open and
low speed rotation after the relay times out
which closes the high-speed valve. Be sure to
check locking pin
speed during turntable
opera-
tion,
and adjust the pin speed control according
to Section 4-6.
5.
Make fine adjustments to the time-delay relay for
energizing the high-speed valve, and slightly
rotate adjustment knob on low-speed rotation
control
to
increase or decrease
speed
as
necessary.
IMPORTANT:
Rotating low-speed flow control ad-
justment knob counterclockwise increases final rotating
speed of mounting plate and can cause knocker block
to slam into hard stops. An initial setting of the low-
speed rotation control can be obtained by rotating the
adjustment knob fully clockwise to the closed position;
then rotate adjustment knob
one fully
turn
counterclockwise, and make fine adjustment from this
coarse setting as necessary.
Slight clockwise or
counterclockwise mtation of the adjustment knob from
its initial position will decrease or increase rotational
speed respectively after the high-speed valve closes.
3.
Loosen locknut below knob, rotate adjustment
knob clockwise to decrease rotational speed, or
counterclockwise to increase rotational speed,
and retighten locknut.
6. Steps 4 and 5 may require repeating several
times to obtain the appropriate mounting plate
rotational speed without knocker block slamm-
ing into the hard stops.
7.
Reinstall front cover on turntable chassis.
4
-
6.
ADJUSTMENT OF LOCKING PIN SPEED
CONTROL (Figure 4-5)
-
The adjustable locking pin
speed control provides a smooth, even cylinder stroke
;
by metering the flow of fluid during locking and unlock-
ing pin movement. The locking pin speed control,
located in the hydraulic line between the directional
control valves and the rod end of the cylinder, is equip-
ped with an adjustment knob to allow increasing or
decreasing pressure and exhaust flow of hydraulic oil at
pin cylinder (meter-in and meter-out flow control).
Locking Pin
Speed Control
TA-120 272
Adjustment Knob
For Regulating Oil
Flow To Control
Locking Pin Speed
Figure 4
-
5. Location Of Locking Pin Speed Control
OM-890 Page 16
