Flowserve WG Series Limitorque - Manual (Page 20)

Limitorque WG Series Worm Gear Operator FCD LMENIM2101-02 – 01/15
20
4.5 Single Reduction Spur Gear Attachment (1S)
Refer to Figure 4.13
Disassembly Instructions:
1. Remove the Socket Head Cap Screws and Input Flange (not shown) from the Cover (pc# 4).
2. Remove the Hex Head Cap Screws (pc# 12) and Cover (pc# 4).
3. Remove all traces of the Cover Gasket (pc# 9).
4. Remove the Input Shaft/Pinion (pc# 3) and Ball Bearings (pc# 6) from the Cover (pc# 4).
5. Remove the Ball Bearing (pc# 10) and Retaining Ring (pc# 5) from the Worm Shaft.
6. Remove Gear (pc# 2) and Key (pc# 8) from the Worm Shaft.
7. Remove the Socket Head Cap Screws (not shown) which mount the Spur Gear Attachment to the
WG Gearbox and remove the Spur Gear Housing (pc# 1)
8. If disassembly of the WG Gearbox is required, see Sections 4.3 or 4.4.
Reassembly Instructions:
1. Install the Spur Gear Housing (pc# 1) on the WG Gearbox, ensuring proper gasket is installed between
Gearbox and Spur Gear Housing (see Section 4.3 or 4.5).
2. Install Gear (pc# 2) onto the WG Gearbox Worm Shaft with Key (pc# 8). Fasten with Retaining Ring (pc# 5).
3. Install Ball Bearing (pc# 10) onto the Worm Shaft.
4. Install Ball Bearing (pc# 6) into the Spur Gear Housing (pc# 1).
5. Install the Input Shaft/Pinion (pc# 3).
6. Install Ball Bearing (pc# 6) onto the Input Shaft/Pinion (pc# 3).
7. Replace the Cover Gasket (pc# 9).
8. Replace the Oil Seal (pc# 11) in the Cover (pc# 4).
Note: Lubricate the Spur Gearing. See Section 3.
9. Install the Cover (pc# 4), mounting with Hex Head Cap Screws (pc# 12).
10. Install the Input Flange (not shown) onto the Cover (pc# 4) using Socket Head Cap Screws (not shown).
Note: Replace any worn or damaged O-Rings or Gaskets to ensure proper sealing and operation.