Flowserve PT Series Limitorque - Manual (Page 21)

21
Limitorque PT Series Worm Gear Operator FCD LMENIM2001-00 – 01/10
flowserve.com
Table 4.2 – Parts List – PT50, 75
Piece # Description
1 Quadrant O-Ring
2 Gearcase
3 Protection Cap
4 Indicator O-Ring
5 Oil Seal
6 Shaft Key
7 Pinion Shaft Bearing
8 Motorized Pinion
9 Quadrant
10 Socket Set Screw
11 Jam Nut
12 Indicator Cap
13 Cover Screw
14 Flanged Cover
15 Nameplate
16 Worm Shaft
17 Worm Shaft Bearing
18 Cover Dowel
19 Spur Wheel
20 Wheel Circlip
21 Spur Wheel Key
22 Snap Ring
23 Smalley Retaining Ring
24 Protection Sleeve
25 Protection Sleeve Seal
4.5 PT60
Refer to Figure 4.6, 4.7 and Table 4.3
1. Remove the Valve Position Indicator (pc# 12) by removing the Indicator Bolts and Lockwashers (pc# 11).
2. Remove the Worm Cover (pc# 10).
3. Replace the Valve Position Indicator so that the center hub and the Segment Gear (pc# 19) maintain their orienta-
tion, or scribe a mark across the spline teeth for reassembly later.
4. Remove the Motor Flange (pc# 14) with Bearing Spacer (pc# 9) by removing the Thrust Spacer Bolts (pc# 20).
5. Remove the Thrust Spacer Shims.
note: Retain the Shims as they will be required for reassembly.
6. Pull on the Worm Shaft/Bearing assembly (pc# 3) to move the tapered roller bearing cup forward.
note: The Segment Gear (pc# 19) should be in the mid travel position in the Worm Housing (pc# 2). If the Worm
Shaft/Bearing assembly comes forward about 1 inch it will be possible to lift out the Segment Gear. If the Worm
Shaft does not come forward, remove the Frost Plug (pc# 17) from the other end of the Gear Housing and tap on
the Worm Shaft to release it from the Worm Housing.