Flowserve WG Series Limitorque - Manual (Page 16)

Limitorque WG Series Worm Gear Operator FCD LMENIM2101-02 – 01/15
16
4.4 WG-04 Through WG-12
Refer to Figures 4.7 through 4.12
Disassembly Instructions:
1. Remove the Hex Head Cap Screws (pc# 14), Pointer Cap (pc# 8), Gasket (pc# 31) and O-ring 1 (pc# 18).
2. Remove Retaining Ring (pc# 10) and Splined Adapter (pc# 4).
3. Remove the Hex Head Cap Screws (pc# 12), Housing Cover (pc# 2), Cover Gasket (pc# 21), and O-Ring (pc# 20).
Note: Remove O-Ring (pc# 18) if applicable 1 .
4. Remove the Input Flange (pc# 7) and Gasket (pc# 22), or remove the Spur Gear Attachment (See Section 4.5 or 4.6).
5. Remove Worm Shaft (pc# 3) with Tapered Roller Bearing (pc# 11) and Ball Bearing 2 (pc# 26) from the Housing (pc# 1).
6. Remove the Tapered Roller Bearing (pc# 11) and Ball Bearing 2 (pc# 26) from the Worm Shaft (pc# 3), if required.
7. Remove the End Cap (pc# 6) and Gasket (pc# 22).
8. Remove the Tapered Roller Bearing (pc# 11) and Ball Bearing 2 (pc# 26).
9. Remove the Worm Gear/Drive Sleeve (pc# 5), O-Rings (pc# 17), and Thrust Washers (pc# 9).
10. Remove the Stop Screws (pc# 15) with Hex Nuts (pc# 16), Packing Seals (pc# 23) and O-rings (pc# 32), if applicable.
Reassembly Instructions:
1. Install the Stop Screws (pc# 15), including the Hex Nuts (pc# 16),
Packing Seals (pc# 23) and O-rings (pc# 32), if applicable.
2. Place the lower Thrust Washer (pc# 9) in the Housing (pc# 1).
3. Replace the lower O-Rings (pc# 17) in the base of the Housing (pc# 1).
Note: Lubricate all O-Rings before installation .
4. Install the Worm Gear/Drive Sleeve (pc# 5).
5. Install the Ball Bearing 2 (pc# 26) and the Tapered
Roller Bearing (pc# 11) into the Housing bore
on the End Cap side.
6. Install the End Cap (pc# 6) and Gasket (pc# 22).
7. Insert the Worm Shaft (pc# 3) into the Housing bore.
8. Install the Ball Bearing 2 (pc# 26) and the Tapered
Roller Bearing (pc# 11) onto the Worm Shaft in the
Housing bore.
9. Replace the Oil Seal (pc# 19) in the Input Flange (pc# 7), if required.
10. Install the Input Flange (pc# 7) with Gasket (pc# 22) or
install the Spur Gear Attachment (See Section 4.5 or 4.6).
Note: Lubricate the worm gear mesh to replace lubricant lost during
disassembly (See Lubrication, Section 3).
14 29
13 28
6
22
11
26
24
1
23
16
15
3
27
26 11
22 19
7
13 28
4
17 17
9
5
9
20
18
21
2
12 30
25
24
8
31
10
(QTY VARIES)
(QTY VARIES)
(VARIES)
(VARIES)
(VARIES) 1
PC-7 IS REPLACED BY
OPTIONAL SPUR GEAR
ATTACHMENT, IF SUPPLIED
Figure 4.7 –
WG-04 through WG-12
Splined Adapter Assembly