Pentair MYERS D65-16 Series User Manual

26850A002 06/04/14
3
Inspect cylinders for linear grooving. If any is detected,
replace cylinders. New packing will rapidly cut or wear
out in grooved cylinders.
Assemble V-rings onto stud and lubricate the outside of
the assembly with Molykote
®
or other grease for ease in
insertion – do not use a graphite-type grease.
When installing each V-ring assembly, rotate crankshaft
until piston rod is at forward position. Place copper
gasket in position in stud using a small amount of
Permatex
®
to hold in place.
Assemble capscrew, etc., into piston assembly and push
into cylinder. Torque the cap screw to 50 ft/lbs.
REPLACING CYLINDERS
Remove packing and rotate crankshaft until piston rod
is in rear position. Insert puller through inside of cylinder
and pilot over piston rod. Insert disc into slots on puller
and slip plate over threads on puller. Screw nut on thread
of puller and snug up. Tighten nut until cylinder breaks
loose. Loosen nut and slip disc out of slots. Remove
puller and repeat to remove other cylinders.
Reasonable care and judgment should be used when
installing the new cylinder. Clean out any accumulation
of loose rust or corrosion in cylinder body. Install a new
O-ring in groove on tapered portion of cylinder and
lubricate with oil or grease. Position cylinder carefully
by hand to avoid cutting the O-ring. Drive into position
firmly, but never use a hydraulic press as excessive force
can cause damage and make cylinders very difficult to
remove for later replacement.
REPLACING VALVE SEATS - D65-16 SERIES
First remove spring retaining bar, spring and flat valve.
When removing upper valve seat, pass head of puller
through hole in valve seat before sliding wedge is
inserted alongside puller bolt. Draw down on nut at top
of bolt. When removing lower seats, drop puller bolt
through opening for upper seat and remove in same
manner. Using sliding wedge on pumps where lower
seats are the same size as upper seats.
Place new lower seat in tapered hole in cylinder body.
Hold a soft brass or hardwood round bar against seat
and drive into place. The knocker stem is in two pieces
so that it can be shortened for installing discharge seats
after suction seats have been installed.
SCREW
NUT
PLATE
PULLER
DISC

Pentair MYERS D65-16 Series Specifications

General

Brand	Pentair
Model	MYERS D65-16 Series
Category	Water Pump
Language	English