GE mn-36005_series Service Manual download pdf (Page 10)

6 | GE Oil & Gas

removal of the bracket is not required.

Before proceeding determine valve action (air

to open/air to close)�

G. Slide lever (32) back onto shaft in desired position.

Slide indicator arm (35) back onto shaft. Align bracket

and slide back onto mounting studs (26) and packing

flange studs (25). Replace 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 housing and replace actuator

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

(32) so that rod end bearing (94) lines up in lever (32)

and that the pads on the lever will contact the stop

bolts (102). Tighten lever cap screw (33).

I. Rotate ball plug (2) to closed position. Adjust closed

position travel stop (102) until it contacts the pad on

lever (32). Tighten locknut (101).

J. Rotate ball plug (2) to open position. Adjust open

position travel stop until it contacts pad on lever (32).

Tighten locknut (101).

Ensure rotation of AC actuator does not

exceed 90deg� Damage to actuator rod may

result�

K. If actuator action is air to open, rotate ball plug (2) to

open position. Pneumatically stroke actuator to open

position. 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 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�

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

position. The pad on lever should contact the closed

position travel stop (102). If it does not, repeat

adjustment as noted in step I above. Return ball plug (2)

to open position. Pneumatically stroke actuator to open

position.

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 replace retaining rings

(40).

M. 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.

N. Replace handwheel assembly in housing (31), washer

(54-7) and retaining clip (54-4).

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

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

2�5 Changing Valve Action

Note: If the valve action is to be changed it should be

done before the valve is installed in the line. This allows

a positive visual check to ensure that the ball plug is

fully closed when the actuator is in the proper position.

2�5�1 Model 33, sizes B & C only� For size AC refer

to section 2�5�2

A. If the valve is equipped with a handwheel disengage

the handwheel and remove retaining clips (63), clevis

pin (66), and pivot pins (39). Remove cap screws (70),

washers (71) and handwheel bracket (62).

B. If necessary, scribe a witness mark on the lever

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

Note: Standard lever has arrows stamped into it for

alignment. For handwheel lever use slot for alignment.

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

spacer rings (69). Remove shaft cover (42) and screw

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

Remove actuator.

Note: Spacer rings apply only on handwheel option.

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

and packing flange mounting studs. Remove lever (32),

lever arm (64) and indicator arm (35) from shaft.

Before proceeding determine valve action (air

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

CAUTION

WARNING

DANGER

CAUTION

WARNING

DANGER

CAUTION

WARNING

DANGER

CAUTION

WARNING

DANGER

CAUTION

WARNING

DANGER

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GE mn-36005_series Service Manual Page 10

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