GE mn-36005_series Service Manual download pdf (Page 9)

Masoneilan 36005 Series High Capacity Control Ball Valves | 5

Before proceeding determine valve action (air

to open/air to close), refer to the appropriate

figure (Figure 10 to open, Figure 11 to close)�

To obtain proper alignment, the lever must be

oriented on the shaft so that the slot in the end

of the shaft and arrows or indicator lines are

aligned as shown; with the ball in the closed

position, the distance between the top of the

bracket and the top of the pivot pin must be as

shown�

G. Slide lever (32) and lever arm (64) back onto shaft in

desired position. Slide indicator arm (35) back onto

shaft. Align bracket and slide back onto bracket

mounting studs (26) and packing flange studs (25).

Replace bracket mounting stud nuts (24) and washers

(18). Slide packing flange (23) back onto packing flange

studs (25) and replace packing flange stud nuts (24).

H. Remount actuator onto bracket and replace actuator

mounting hex nuts (75) and washers (76). Position lever

(32) and lever arm (64) so that rod end bearing (94) lines

up in lever (32). Tighten lever cap screws (34).

I. Rotate ball plug (2) to closed position. If actuator action

is air to open loosen rod end bearing locknut (93) and

adjust position of rod end bearing (94) so that holes in

lever (32) and rod end bearing (94) line up. Insert pivot

pin (39) and replace spacer rings (69) and retaining rings

(40).

When stroking valve keep hands and

equipment clear of ball plug and seal ring

to avoid injury or damage to personnel and

equipment�

J. If action is air to close place ball plug (2) in closed

position and pneumatically stroke actuator fully.

Do not exceed maximum air supply pressure�

Keep hands clear of actuator stem and linkage�

Loosen rod end bearing locknut (93) and adjust rod end

bearing (94) so that holes in lever (32) and rod end bearing

(94) line up. Insert pivot pin (39) and spacers (69) and

replace retaining rings (40).

K. For both air to open and air to close action, stroke valve

fully to ensure proper closure of ball plug and operation

of valve. It may be necessary to readjust rod end

bearing slightly by loosening locknut and rotating stem.

L. Replace handwheel assembly in bracket (62), pivot pins

(72) and retaining clips (63).

M. Replace shaft cover (42) and screw (43).

N. Set and lock indicator arm (35) to indicate plug position.

2�4�2 Changing Actuator Position Model 33, size AC only�

Before proceeding with changing actuator

position, air action or valve maintenance,

isolate valve, vent process pressure and shut

off air supply and signal air lines or electrical

lines to unit� It is recommended that the

valve be removed from the pipeline prior to

maintenance work� Keep hands and tools away

from the segmental ball, particularly when

disconnecting the actuator stem from shaft

arm as ball may rotate freely to its lowest

position�

For each valve action (air to open/air to close) the

actuator may be positioned to either side of the pipe.

Actuator position is usually determined by adjacent

piping, obstacles of various types or air piping

arrangements. To reposition the actuator and/or bracket

follow the disassembly and reassembly instructions

below.

Note: Actuator positioning should be performed

prior to installing the valve in the pipeline. To change

actuator position and/or valve action refer to Figure 1

for desired position.

A. Remove valve from process line after closing isolating

valves and disconnecting all pneumatic tubing and

electrical wiring.

B. If valve is equipped with a handwheel (Figures 13 & 16)

disengage handwheel and remove retaining clip (54-7)

and washer (54-4). Remove entire handwheel assembly

from actuator housing (31).

C. Remove pivot pin retaining clips (40), pivot pin (39).

Remove actuator hex nuts (75) and washers (76).

Remove actuator.

D. Remove shaft cover (42) and screw (43). Loosen lever

cap screw (33). Remove packing flange stud nuts (24),

bracket mounting stud nuts (24) and washers (18).

Loosen ball plug indicator arm (35).

E. If necessary, scribe a witness line on the lever (32) in

relation to the slot on the end of the shaft (5).

F. Slide housing (31) away from body until it clears bracket

and packing flange studs (26 and 25), allowing lever (32)

and indicator arm (35) to be removed from shaft. Total

CAUTION

WARNING

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CAUTION

WARNING

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CAUTION

WARNING

DANGER

CAUTION

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GE mn-36005_series Service Manual Page 9

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