User Manual

Rockwell Automation Publication 1502-UM052H-EN-P - June 2013 35
Chapter 4
Maintenance
Tool Requirements
When maintenance is performed on the vacuum contactor, the following tools
may be required:
• 3/8-in. drive ratchet wrench with extension
• 3/8-in. drive torque wrench
• Standard 3/8-in. drive sockets; 7/16 in., 1/2 in.
• Open end wrenches; 7/16 in., 1/2 in., 5/8 in.
• Slot head screwdrivers; 1/8-in. wide, ¼-in. wide
• External retaining ring pliers (STANLEY-PROTO #393 or equivalent)
• Feeler gauge set (0.030 in. [0.76 mm] and 0.075 in. [1.91 mm])
• Feeler gauge set (0.010 in. [0.25 mm]) Mechanical Latch
• 2-inch C-Clamp
• Armature clamping fixture (A-B Part No. 80154-149-51)
• Digital caliper capable of depth measurement
• High potential tester
Recommended Torque
Values
Part of the contactor may have to be disassembled for maintenance or
replacement. There are appropriate torque requirements for particular bolt sizes
when reassembling the contactor. For the following bolt sizes, use the specified
torque values in Tabl e 4
.
Table 4 - Torque Values
IMPORTANT
Some components of this product incorporate Imperial hardware. Rockwell
Automation recommends the use of the appropriate tools to successfully
complete the maintenance procedure on these components. If you cannot
obtain such tools, contact your area Rockwell Automation sales office for
assistance.
#10 in. Hardware
2.7 lb•ft (3.6 N•m)
1/4 in. Hardware
6 lb•ft (8 N•m)
5/16 in. Hardware (Grade 2)
(1)
(1) All 5/16 hardware is Grade 2 unless otherwise specified.
11 lb•ft (15 N•m)
5/16 in. Hardware (Grade 5)
(2)
(2) Refer to Figure 33.
18 lb•ft (24 N•m)
3/8 in. Hardware
20 lb•ft (27 N•m)