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Field Service Procedure – Replacement Pol Motor Kit, USAT 

 

Page 7 of 7 

Document No 

136481 Rev A

 

Copyright © Sea Tel, Inc 2012 - The information contained in this document is proprietary to Sea 
Tel, Inc.  This document may not be reproduced or distributed in any form without prior written 

consent of Sea Tel, Inc.  

 

 

 
11. Verify the tension of the belt by pressing on it at the 
central position between the motor pulley and the main 
drive sprocket. There should be a little give, but the belt 
should be tight enough that the axis will drive correctly, 
without skipping on the teeth of the pulley. If the belt is too 
tight/loose repeat the previous step until the belt tension is 
correct and tighten all three of the screws. 

 
12. Install the pol motor bracket to the feed using the 
hardware removed in step 3. Apply Loctite 242 to the 
thread. 

 

*Note:

 Angle the bracket away from the connector to 

allow sufficient clearance to connect the  

 
13. Connect the reflector harness D-sub connector to the 
motor connection using the hardware removed in step 1. 

 
14. Insert the pol pot connector into the bracket and 
connect the reflector harness connection.    

 
15. Secure the pol motor harness to the body of the motor 
using a cable tie.  

 

Summary of Contents for Sea Tel

Page 1: ......

Page 2: ...nstalled on the feed assembly of the USAT to monitor the stabilization of the feed assembly offering the performance of a 3 axis pedestal 4 Verify the Range of Motion Note Do not try to drive the pola...

Page 3: ...to move and the pol count doesn t change then the pot has failed and is outputting a default value No drive will be issued to the pol motor as the value is out of the range which the system operates...

Page 4: ...physical problem such as the belt slipping on the motor pulley 6 3 Troubleshooting Pedestal Errors Servo Limit and Stability Limit 1 Reinitialize the pedestal does it drive correctly or at all If none...

Page 5: ...turn will rotate the motor pulley and shaft and it should be apparent if there is a dead spot as the rotation will feel taught at that position Caution Be extremely careful rotating the pedestal arou...

Page 6: ...or replacing the pol motor on the USAT series antennas Sea Tel kit part number 125266 1 motor part number 124700 Caution Power down the pedestal before following this procedure 1 Using a 1 Phillips sc...

Page 7: ...ctive pot assembly Apply Loctite 638 to the motor shaft and secure the set screw with Loctite 222 using a 1 16 Allen wrench Note For further information refer to the Loctite Procedure 121730 provided...

Page 8: ...gh that the axis will drive correctly without skipping on the teeth of the pulley If the belt is too tight loose repeat the previous step until the belt tension is correct and tighten all three of the...

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