Limitorque WTR Series - Disassemble WTR-430 through 575; Disassemble SGA; Disassemble WTR; Reassemble WTR-430 through 575

WTR Series
Maintenance
WTR Installation & Maintenance Manual 330-15000 • Revision A • August
5.3.5 Disassemble WTR-430 through 575
5.3.5.1 Disassemble SGA
Piece numbers refer to Figure 6.2.
1. Remove the Key (piece #11) from the Input Pinion (piece #23).
2. Remove the Housing Cover (piece #21) by removing the Cap Screws (piece #15).
3. Remove the Input Pinion (piece #23) and the Output Gear (piece #22).
4. Remove the small Housing (piece #20) by removing the Cap Screws (piece #30).
5. Remove the Key (piece #24) from the Pinion Gear (piece #5).
If not Double Reduction SGA, go to Step No. 8.
6. Remove the Key (piece #11) from the Input Gear (piece #5).
7. Remove the End Cover (piece #17) by removing the Cap Screws (piece #16).
8. On the WTR-575 only, remove the Packer (piece #8).
9. Remove the top Cover (piece #2) by removing the Cap Screws (piece #16).
10. Remove the Input Gear (piece #5) including the Bearings (piece #6) and the Shim
(piece #19).
11. Remove the Gear Sub-Assembly (piece #18) and the final Output Gear (piece #4).
12. Remove the main SGA Housing (piece #1).
5.3.5.2 Disassemble WTR
Piece numbers refer to Figure 6.2.
If the units are for use in buried service applications:
• The Pointer Cap (piece #7) is replaced with a non-rotating sealed cap.
• The input shaft will be sealed with extra O-rings, a bronze sealing ring and a soil pipe
support.
1. Remove Pointer Cap (piece #7), Housing Cover (piece #2), and Motor Adapters (if
supplied).
NOTE: Three jack screw holes are provided in the housing cover to aid in removal.
2. Remove End Caps (piece #8 and #8A).
3. Withdraw Wormshaft assembly (piece #3) complete with Thrust Bearings (piece #10) and
Shims (piece #16).
NOTE: Note the number and position of any shims that are present. Gasket compound
must be used on all metal/metal faces.
4. Remove Drive Sleeve (piece #5) from Housing (piece #1).
5.3.6 Reassemble WTR-430 through 575
1. Perform Steps 1 through 4 listed in Disassemble WTR in the reverse order to reassemble
the WTR.
2. Reassemble the SGA by reversing the order of the disassembly steps shown above.
NOTE: Note the number and position of any shims that are present. Gasket compound
must be used on all metal/metal faces.
5-4