Baker Hughes Masoneilan 21000 Series, Instruction Manual

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Parts Reference Table for Models 51/52/53 Actuators
Ref
No.
Description
Ref
No.
Description
Ref
No.
Description
1 Yoke 24 Hexagon bolt 47 Locking pin case
2 Piston rod S/A 25 Spring lock washer 48 Pin
3 Lower spring button 26 Indicator plate 49 Spring
4 Spring 27 Cross recessed head screw 50 Hexagon socket set screw
5 Hexagon socket head cap screw 28 Exhaust pipe 51 Guide key
6 Spring lock washer 29 Spring lock washer 52 Worm gear
7 Spring tube 30 Plug 53 Spacer tube
• 8 Guide bushing 3 31 Piston S/A 54 Adapter
9 Compression bolt • 32 Guide bushing 55 Set screw
10 Upper spring button • 33 O ring (Piston rod) 56 Worm
11 Thrust bearing • 34 Rod scraper • 57 Bearing
12 Compression nut 35 Hexagon bolt 58 Retaining ring
13 Separator plate Model 52/53 36 Spring lock washer 59 Hand wheel shaft
14 Cylinder tube 37 Gear box 60 Key (Worm)
15 Cylinder tube 38 Gear box cover S/A 61 Key (Handwheel)
• 16 Guide ring • 39 O ring 62 Retaining ring
17 Top plate • 40 Thrust bearing 63 Handwheel
18 Set screw 41 Adjustment screw 64 Grip
19 Center bolt 42 Locking nut 65 Directional plate
20 Hexagon nut 43 Adjustment nut 66 Self locking nut
• 21 O ring (Piston, Top plate) 44 Piston rod engagement 67 Operating information plate
22 Split clamp • 45 Bearing 68 Drive screw
23 Indicator arm 46 Retaining pin 69 Separator plate (Model 51)
• Recommended Spare Parts 70 Volume chamber tube
Table 8 - Models 51/52/53 Actuators Parts List