Flowserve WG Series Limitorque - Manual (Page 22)

Limitorque WG Series Worm Gear Operator FCD LMENIM2101-02 – 01/15
22
4.6 Double Reduction Spur Gear Attachment (1SD)
Refer to Figure 4.14
Disassembly Instructions:
1. Remove the Socket Head Cap Screws (pc# 19) and Input Flange (pc# 18) from the Cover (pc# 12).
2. Remove the Hex Head Cap Screws (pc# 14) and Cover (pc# 12).
3. Remove the Helical Gear/2 nd Set Pinion Subassembly.
4. Remove all traces of the Cover Gasket (pc# 13).
5. Remove the Input Shaft/Pinion Subassembly from the Cover (pc #12) by removing the Retaining Ring (pc# 16).
6. Remove the Retaining Ring (pc# 4) and Ball Bearings (pc# 11) from the Input Shaft/Pinion (pc #9).
7. Remove the Ball Bearing (pc# 8) from the 2 nd Set Pinion (pc# 5).
8. Remove the Retaining Ring (pc# 4) and the Helical Gear (pc# 2) from the 2 nd Set Pinion (pc# 5).
9. Remove the Retaining Ring (pc# 4) and the Helical Gear (pc# 2) from the Worm Shaft.
10. Remove the Socket Head Cap Screws (pc# 20) from the Spur Gear Housing (pc# 1) and remove the
Spur Gear Housing (pc# 1) from the WG Gearbox.
11. 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 4.4).
2. Install the Helical Gear (pc# 2) on the WG Gearbox Worm Shaft with two Keys (pc# 3). Fasten with Retaining
Ring (pc# 4).
3. Insert the Bushing (pc# 10) into the end of the Input Shaft/Pinion (pc# 9).
4. Install the Ball Bearings (pc# 11) and Retaining Ring onto the Input Shaft/Pinion (pc# 9)
5. Install the Input Shaft/Pinion with Ball Bearings (pc# 11) into the Cover (pc# 12) using Retaining Ring (pc# 16).
6. Install the Ball Bearing (pc# 6) in the Spur Gear Housing (pc# 1).
7. Assemble the Helical Gear (pc# 2) on the 2 nd Set Pinion (pc# 5) with two Keys (pc# 7). Fasten with Retaining
Ring (pc# 4).
8. Install the Ball Bearing (pc# 8) on the 2 nd Set Pinion (pc# 5).
9. Install the Helical Gear/2nd Set Pinion Subassembly in
the Ball Bearing (pc# 6).
Note: Lubricate the Spur Gearing. See Section 3.
10. Replace the Gasket Cover (pc# 13).
11. Install the Cover (pc# 12) with Input Shaft/Pinion Subassembly onto the Spur Gear Housing, ensuring proper mesh of
gear teeth on Input Shaft/Pinion (pc# 9) and Helical Gear (pc# 2), and alignment of Ball Bearing (pc# 8) with Cover (pc# 12).