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Page 42 T46230811 Rev . J DH P ositioning System Assembly , Non P/T This Document Supports Assembly 46230811 Rev J Preventive Maintenance Schedule WAR NI NG Do not perform any preventive maintenance with power on unless …
Page 41
DH Positioning System Assembly, Non P/T T46230811 Rev. J
This Document Supports Assembly 46230811 Rev J
14. As the rotary table indexes, slowly turn the needle valve (NV1 or
NV1A) to achieve a condition in which the rotary disc stop block
firmly enters the lock assembly without causing a banging sound.
15. Push the STOP push button to stop the rotary table indexing.
16. Loosen the lock screw on the air flow control valve on the drive
assembly.
17. Adjust the air flow control valve fully clockwise and then two full
turns counterclockwise.
18. As the disc rotates, adjust the flow control valve so the disc movement
is quick but the stop blocks do not strike the lock assembly with
excessive force. The rotary disc should rotate ninety degrees in
approximately one second with both discs set at the same speed.
NOTE
It may be necessary to adjust the pneumatic slow down needle valve to
achieve this adjustment.
19. Tighten the lock screw on the flow control valve to secure the valve in
position.
20. Push the STOP push button.
Page 42
T46230811 Rev. J DH Positioning System Assembly, Non P/T
This Document Supports Assembly 46230811 Rev J
Preventive Maintenance Schedule
WARNING
Do not perform any preventive maintenance with power on unless
specifically instructed otherwise. Failure to observe this warning may
result in personal injury.
CAUTION
When performing machine maintenance, wear a wrist strap connected to
ground to prevent electrostatic discharge damage to printed circuit
boards.
Check: Perform M aintenance:
Check the rotary table
squareness Adjust as needed.
Check the rotary table air motor
drive wheel. Replace as needed.
Lubricate the rotary table lock
assembly with 10w non-detergent oil.
Lubricate the actuator on the
actuator assembly with Kendall
Super Blue grease.
Check: Perform M aintenance:
Flush and lubricate the X/Y ball
bushings with 10w oil.
Semiannual M aintenance (S): 36,000,000 Cycles
Check: Perform M aintenance:
Disassemble, clean and lubricate
the rotary table lock assembly per
the assembly drawing. Replace any
worn parts.
Lubricate the X/Y ball lead screws
with Kendall Super Blue grease.
Weekly M aintenance (W): 1,500,000 Cycles
M onthly M aintenance (M): 6,000,000 Cycles
