3
Limitorque B320 Series FCD LMENIM3201-02 – 01/15
flowserve.com
Contents
1 Introduction 5
1.1 Purpose 5
1.2 User Safety 5
2 Product Capabilities and Features 6
2.1 Initial Inspection and Storage Instructions 6
2.2 Product Identification 7
2.3 Inspection and Recording 7
2.4 Storage Procedure 8
3 Operator Weights 9
4 Installation Instructions 10
4.1 Safety Precautions 10
4.2 Safety Practices 11
4.3 Installation 11
4.3.1 Installing an Operator with a Threaded Stem Nut 11
4.3.2 Installing an Operator with a Blank Stem Nut (B320-10 through -90, one-piece) 11
4.3.3 Installing an Operator with a Blank Stem Nut (B320-90, two-piece) 12
5 Lubrication 13
5.1 Lubrication Inspection 13
5.2 Factory Lubricant 13
5.3 Minimum Lubricant Qualities Required 14
6 Disassembly and Reassembly 15
6.1 Disassembly and Reassembly of B320-10 through -80 16
6.1.1 Disassembly 16
6.1.2 Reassembly 16
6.2 Disassembly and Reassembly of B320-90 20
6.2.1 Disassembly 20
6.2.2 Reassembly 20
6.3 Disassembly and Reassembly of Spur Gear Attachments 21
6.3.1 Disassembly of 3:1 Spur Gear Attachment for B320-10 through -40 21
6.3.2 Reassembly of 3:1 Spur Gear Attachment for B320-10 through -40 22
6.3.3 Disassembly of 6.3:1, 10.3:1, and 10.8:1
Spur Gear Attachments for B320-50, -70, and -80 23
6.3.4 Reassembly of 6.3:1, 10.3:1, and 10.8:1
Spur Gear Attachments for B320-50, -70, and -80 23
6.3.5 Disassembly of 5:1 Spur Gear Attachment for B320-90 25
6.3.6 Reassembly of 5:1 Spur Gear Attachment for B320-90 25
6.3.7 Disassembly of 17.5:1 Spur Gear Attachment for B320-90 27
6.3.8 Reassembly of 17.5:1 Spur Gear Attachment for B320-90 27
7 How to Order Parts 30