Technical information

OM76_Rev J Page 26 of 28
7. While holding the Adjusting Cap (item a) stationary, tighten the Locknut (item b).
8. Operate the Jack through the entire stroke, checking for tight spots.
NOTE: If Jac/Jack has been used over only a portion of its stroke, the backlash should be adjusted in the least worn
portion of the screw.
CAUTION: Take special care not to over-tighten the anti-backlash system. Doing so may result in binding and/or
lockup between the drive nut and the lifting screw. Over-tightening can also result in a destructive heat buildup and/or
operational failure.
Figure 5-1: Jac/Jack Anti-Backlash Procedure
5.4 Maintenance Kits
The below table provides descriptions of and ASC Signal part numbers for commonly used maintenance kits:
Table 5.2: Maintenance Kits
Part # Description
221691
Ku-Band Feed Window Kit
202436
C-Band Feed Window Kit
209906-2
Lubrication Kit (Medium Modular Mount)
For 5.6m – 9.3m sized ESAs