Baker Hughes Masoneilan 5A Series, Instruction Manual

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Copyright 2020 Baker Hughes Company. All rights reserved. Baker Hughes provides this information on an
“as is” basis for general information purposes. Baker Hughes does not make any representation as to the
accuracy or completeness of the information and makes no warranties of any kind, specific, implied or oral,
to the fullest extent permissible by law, including those of merchantability and fitness for a particular purpose
or use. Baker Hughes hereby disclaims any and all liability for any direct, indirect, consequential or special
damages, claims for lost profits, or third party claims arising from the use of the information, whether a claim
is asserted in contract, tort, or otherwise. Baker Hughes reserves the right to make changes in specifications
and features shown herein, or discontinue the product described at any time without notice or obligation.
Contact your Baker Hughes representative for the most current information. The Baker Hughes logo,
Masoneilan, and Camflex are trademarks of Baker Hughes Company. Other company names and product
names used in this document are the registered trademarks or trademarks of their respective owners.
BHMN-5A-Actuator-IOM-34584A-0820 08/2020
Parts Reference
Ref Part name Ref Part name Ref Part name
1 Body 29 Rear cover 58 Boss cover
2 Seat ring 30 Cover screw 60 Cover-Flange
3 Retainer 31 Screw retainer 61 Gasket
4 Plug 32 Front cover 64 Stud
5 Clevis pin plug 33 Yoke 67 Stud
6 indicator dot 34 Lever 68 Nut
7 Clevis pin 35 Clevis 69 Rod End bearing
8 Bearing 36 Cap screw 70 Piston cylinder stem
9 Shaft cover 37 Lock washer 71 Piston cylinder
10 Cover screw 38 Spring Barrel 77 Limitstop
11 Bottom cover 39 Spring 78 Nut
12 Grommet 40 Diaphragm 88 Adjustable indicator
13 Packaging Flange Stud 41 Cap screw 89 Indicator screw
14 Packaging Flange 42 Diaphragm case 90 Inner O-ring
15 Packaging Follower 43 Piston-stem 91 Outer O-ring
16 Safety pin 44 Lock washer 92 Inner O-ring
17 Packing 45 Lock nut 93 Outer O-ring
18 Shaft retaining ring 46 Lock nut 94 Nut
19 Shaft 48 Thread plug 95 Inner O-ring
20 Spacer 49 Lever cap screw 96 Outer O-ring
21 Upper Guide 50 Truarc ring 100 Stop ring
22 Lower Guide 51 Handwheel Washer 101 Body Gasket
23 Packing Box ring 52 Handwheel lock 102 Bonnet
24 Warning plate 53 Handwheel shaft 103 Bonnet stud
25 Flow arrow 54 Handwheel plate 104 Bonnet nut
26 Plate screw 55 Plate screw 105 Lo-dB plate
27 Nut 56 Serial plate 106 Adaptor screw
28 Body stud 57 Plate screw 107 Adaptor