OM-01490
D SERIES
MAINTENANCE & REPAIR
PAGE E - 15
Secure the gearbox assembly (10) to the dia
phragm ring (37) with the hardware (26 and 27).
Connect the coupling halves and check alignment
as described in Section B.
Secure the coupling guard (11) to the base with
hardware (22, 23 and 24).
Lubricate the gearbox as described in
LUBRICA
TION
.
Plunger Rod Reassembly And Installation
(Figure 3)
If the eccentric bearing (2) was removed, clean the
bore of the eccentric cap (1) with a cloth soaked in
cleaning solvent.
Most cleaning solvents are toxic and
flammable. Use them only in a well‐ven
tilated area free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent contain
ers.
Use a suitably sized dowel and an arbor (or hy
draulic) press to install a new eccentric bearing (2)
into the eccentric cap until fully seated.
Slide the plunger rod (14) through the upper dia
phragm plate (8). Install the flat washer (7), spring
(6), spring washer (5) and jam nut (4). Compress
the spring to the dimension shown in Figure 3 by
tightening the jam nut.
Install the T‐type lockwasher (3). Apply `Loctite No.
242 Threadlocker' or equivalent compound on the
plunger rod threads and screw the eccentric cap
on until tight.
NOTE
The lubrication fitting (15) in the diaphragm plate
must face the same direction as the lubrication fit
ting (16) in the eccentric cap.
Lubricate the eccentric bearing (2) with a thin coat
ing of No.2 lithium base grease.
Diaphragm Installation
(Figure 3)
Position the diaphragm (9) on the upper dia
phragm plate, making sure the lip is properly
seated. Slide the studs (12) in the lower diaphragm
plate (11) through the holes in the upper plate and
secure with the nuts (13).
(Figure 1)
Install the plunger rod assembly (28) onto the ec
centric cam (33, Figure 4) and secure with the snap
ring (7).
Install the eccentric guard (1) and secure it with the
hardware (2, 3, 4, 42, 43 and 44).
Lubricate the plunger rod assembly as described
in
LUBRICATION
, Section E.
Secure the diaphragm pot assembly (36) to the di
aphragm ring (37) with the hardware (33, 34 and
35).
Suction And Discharge Check Valve
Installation
(Figure 2)
Inspect the check valve components and replace
as required. Subassemble the check valve weights
(27 and 30) and check valves (31) with the hard
ware (28 and 29).
If the inboard discharge flange (23) was removed,
clean the mating surfaces and install the gasket
(19). Secure the flange to the diaphragm pot with
the hardware (21 and 22).
Subassemble the valve seat (25) and discharge
check valve (26) to the discharge elbow (1) with the
weights positioned as shown in Figure 2. Secure
with the hardware (3 and 4).
Clean the mating surfaces of the valve seat and dis
charge flange (23). Install the gasket (24) and se
