GE mn-36005_series Service Manual download pdf (Page 12)

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

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).

I. 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.

J. Replace handwheel assembly (54) in bracket (31),

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

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

3�0 Maintenance

3�1 Bracket Subassembly – Model 33, sizes B &

C only� Refer to section 3�2 for size AC

3�1�1 Disassembly

When disconnecting actuator rod end bearing

from shaft arm, the ball is likely to rotate

toward the bottom of the valve body� Keep

hands and tools away from the ball�

A. Remove screw (43) and shaft cover (42) or positioner if

so equipped.

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

rings (69).

Note: Spacer rings apply only on handwheel option.

C. Remove actuator mounting nuts (75) and washers (76)

and remove actuator from bracket (31).

D. If valve has handwheel, remove retainer clips (63), clevis

pin (66), pivot pins (72). Remove handwheel assembly

from bracket.

E. Loosen cap screw (33) and indicator arm (35). Remove

packing flange stud nuts (24) and bracket mounting

stud nuts (26) and washers (18).

F. Scribe a witness mark on the lever (32) indicating

relative position to the slot in the end of the shaft (5).

G. Slide bracket (31) off studs and shaft, removing

indicator arm (35), lever (32), lever arm (64) and packing

flange (23).

H. Remove bearing (47) from bracket. Examine all parts for

wear and/or damage. Replace if necessary.

3�1�2 Reassembly

Note: If the valve is equipped with a handwheel the

lever consists of two separate arms which are a

MATCHED PAIR and are not interchangeable with any

other pair. The sequence of assembly is to place one

lever over the shaft then the lever arm (64) insert pin

(68), and then the second lever arm onto the shaft then

slide the shaft into the bracket and bearing.

A. Replace ball bearing (47) in the bracket (31).

B. Place ball plug (2) in closed position. Slide bracket (31)

partially over shaft. Ensure all packing box parts are

in place and then slide packing flange (23) onto shaft.

Slide lever (32) onto shaft on its former position. Slide

handwheel lever arm (64) and second lever (32) onto

shaft if valve has handwheel. Replace indicator arm

(35). Slide bracket fully onto mounting studs (26); ensure

shaft (5) is properly located in bearing (47). Replace lock-

washer (18) and bracket mounting stud nuts (24) and

tighten. Replace packing flange stud nuts (24).

C. Pull shaft out to bottom against bearing. Replace

actuator and install washers (76) and nuts (75). Slide

lever (32) on shaft so that it is lined up with rod end

bearing (94). Tighten lever locking screw (33).

D. If valve action is air to open place ball plug (2) in

closed position. Loosen rod end bearing locknut (93)

and adjust rod end bearing until holes in lever (32)

and rod end bearing (94) line up. Install pivot pin (39),

spacers (69) (handwheel only) and retainer rings (40). If

valve action is air to close, place ball plug (2) in closed

position and pneumatically stroke actuator fully.

Do not exceed maximum air supply pressure

specified on the valve nameplate�

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

fully to ensure proper closure of ball plug and operation

of valve. Tighten rod end bearing locknut (93).

When stroking valve keep hands and

equipment clear of ball plug and seal ring

to avoid injury or damage to personnel or

equipment� Do not exceed pressure specified

on the valve nameplate�

F. Replace shaft cover (42) and screw (43) (or positioner if

so equipped).

G. Replace handwheel assembly in bracket (62) and

CAUTION

WARNING

DANGER

CAUTION

WARNING

DANGER

CAUTION

WARNING

DANGER

CAUTION

WARNING

DANGER

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GE mn-36005_series Service Manual Page 12

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