Flowserve PT Series Limitorque - Manual (Page 15)

15
Limitorque PT Series Worm Gear Operator FCD LMENIM2001-00 – 01/10
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Reassembly Instructions:
1. Tap the Dowel pins (pc# 13) flush with the Flange Cover (pc# 1).
2. If the Worm Shaft components have been removed, reassemble the Worm Shaft (pc# 2) with the Thrust Washers
(pc# 7), Thrust Bearings (pc# 6), Worm Shaft Bearings (pc# 5), and Oil Seal (pc# 4).
note: The Oil Seal should be located near the end of the Worm Shaft to facilitate installing the assembly into the
Gearcase (pc# 21).
3. Lower the Quadrant (pc# 12), with the wording up, and the Worm Shaft (pc# 2) assembly, with the dashes on the
Worm Shaft Bearings facing up, into the Gearcase simultaneously.
Caution: The O-Ring (pc# 22) on the lower Quadrant journal seals the Gearcase / Quadrant interface. Check the condi-
tion of the O-Ring. If damaged, replace it.
4. Mesh the gearing on the Quadrant with the Worm on the Worm Shaft and slide into the Gearcase.
5. Repack the gearing area with lubricant, thoroughly immersing the Worm/Worm Gear interface and Bearings.
6. Apply Loctite 574 or equivalent around the Oil Seal and slide the Oil Seal down the Worm Shaft and into the
Gearcase.
7. Apply a bead of Loctite 574 or equivalent on the machined surface and around the bolt holes of the Gearcase, being
careful to avoid applying Loctite into the bolt holes.
8. Prior to installing the Flange Cover (pc# 1), place the Protective Sleeve Seal (pc# 14) against the Oil Seal.
9. Slide the Cover over the Worm Shaft and place onto the Gearcase.
10. Tap down the Dowel pins (pc# 13) in the two holes that are not tapped so that they are flush with the Flange Cover.
11. Install the Flange Cover screws.
12. Attach the Indicator Cap (pc# 19) to the Quadrant (pc# 12) noting the location of the nub on the inside of the plastic
Indicator Cap that sets in one of the drilled holes in the Quadrant.
note: The cast iron Indicator Cap is attached with two screws.
Caution: Check that the Indicator Cap is installed to correctly reflect the position of the Quadrant relative to valve
position.
13. Ensure that the Protection Sleeve (pc# 15) is against the Protection Sleeve Seal. Use the Smalley Retaining Ring
(pc# 3) to push the Protection Sleeve against the Protection Sleeve Seal if needed.
14. Place the Input Bearing (pc# 16) and Snap Ring (pc# 17) over the Worm Shaft and into the Motor Flange of the
Cover.
15. Re-insert the Key in the Worm Shaft.
16. Check the operator for proper operation. The Worm Shaft should be capable of operation by hand. Stroke through a
complete open-close cycle.