MEGA 120E PUMP OPERATION / MAINTENANCE MANUAL
PAGE 17
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Lift off the slave head.
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Remove the main seal and diaphragms.
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Remove the o-rings from the shuttle transfer tube.
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Remove the body assembly.
•
Remove the second set of diaphragms and main seal.
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Remove the transfer tube and o-rings from the heads and body.
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Remove the remaining tie bolt caps and tie bolts.
NOTE:
All polypropylene and fluoroplastic parts, when disassembled, should be
thoroughly washed and be free from chemical residue for handling purposes.
4.7.a Quick Exhaust/Muffler Disassembly
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Remove the muffler assembly from each head.
•
Remove quick exhaust ports from heads.
•
Remove quick exhaust seals.
4.7.b Body Disassembly
•
Remove check bore plugs using 3/4” pin tool and remove seals.
•
Remove sleeves, balls, o-rings and check seat. Do not use excessive force.
•
Unthread push plate locking screw and push plate from the one side of the
shaft.
•
Remove remaining shaft and push plate from body.
•
Unthread second locking screw and push plate from shaft.
•
Unthread shaft bushing locking screw from body.
•
Using 2” pin tool, insert pins in shaft bushing locking ring located in the
master head side of chamber and rotate CCW to remove bushing. Then
push out bushing from the slave head chamber side.
4.8 ASSEMBLY
Prior to beginning assembly, inspect all parts to ensure they are clean and dry. Wear
clean, protective gloves.
4.8.a Quick Exhaust (Both Heads)
•
Insert quick exhaust seal.
•
Insert quick exhaust port in each head as shown. Tighten to 15 in-lbs. Do not
over tighten.
