Gorman-Rupp Pumps 3D-E1.5 1P 883504 and up - Manual (Page 30)

D SERIES OM-03604
MAINTENANCE & REPAIR PAGE E - 14
shaft and secure it with the snap ring (13). Be sure
the drive gear seats against the snap ring.
Install the washer (5) onto the drive shaft and slide
the assembled drive shaft and gear through the
bearings in the gear housing. Install the same
thickness of shims (34) as previously removed. In­
stall the washer (38) and drive shaft key (36). Press
the eccentric cam (33) onto the shaft and secure
with the snap ring (37).
Press the pinion bearing (32) into the gear housing
until the closed end is flush with the outer face of
the bore.
Press the internal gear (15) onto the pinion shaft
until it seats squarely against the pinion shoulder.
Position the spacer washer (30) in the gear hous­
ing and slide the pinion shaft through the washer
and into the pinion bearing.
Press the pinion bushing (18) into the bearing
housing until fully seated.
Slide the assembled pinion drive shaft and bear­
ings (25, 25A and 26) into the bearing housing (16)
until the bearing (25A) is fully seated against the
bore shoulder.
Press the oil seal (23) into the adaptor (22) with the
lip positioned as shown in Figure 4. The outer face
of the oil seal should be just flush with the face of
the adaptor.
Install the washer (19) in the bearing housing.
Press the oil seal assembly (21) into the bearing
housing until fully seated. Be careful not to roll or
damage the oil seal lip on the pinion keyway.
Install the housing gasket (6) and secure the cover
plate (7) to the bearing housing with two of the
capscrews and lockwashers (8 and 9).
If the locating pins (17) were removed, press new
pins into the gear housing (1). Install the gasket
(14) and position the bearing housing (16) over the
internal gear (15) and against the cover plate so
that the locating pins align with the holes in the cov­
er plate. Be sure the teeth on the drive pinion (26)
mesh with those on the internal gear (15). Tap
against the bearing housing with a soft‐faced mal­
let or wood block until the pinion bushing (18) fully
engages the pinion shaft (31).
Secure the cover plate and bearing housing to the
gear housing with the remaining attaching hard­
ware (8, 9 and 10).
NOTE
The two longer capscrews (10) must be installed in
the two lower holes in the gear housing.
Install the drive key (20) in the drive pinion.
(Figure 1)
Install the coupling half (12) on the drive pinion (26,
Figure 4).
Secure the gearbox assembly (8) to the diaphragm
ring (36) with the hardware (25 and 26). Connect
the coupling halves and check alignment as de­
scribed in Section B.
Secure the coupling guard (9) to the base with
hardware (22 and 23).
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.