Gorman-Rupp Pumps 16C2-F4L 913960 thru 1013565 - Manual (Page 30)

10 SERIES OM−00725−06
MAINTENANCE & REPAIR PAGE E − 12
INSTALLATION OF NEW DEPARTURE OR
BCA/FEDERAL MOGAL 5300W SERIES BEARINGS
(OPEN OR ENCLOSED IMPELLERS)
INSTALLATION OF MRC/SKF 5300M OR
FAFNIR 5300W SERIES BEARINGS
(OPEN OR ENCLOSED IMPELLERS)
LOADING
DIRECTION OF
THRUST
BALL LOADING
GROOVE POSITIONED
AWAY FROM IMPELLER
GROOVE
DIRECTION OF
THRUST
LOADING
BALL LOADING
GROOVE POSITIONED
TOWARD IMPELLER
GROOVE
After the bearings have been installed and allowed
to cool, check to ensure that they have not moved
away from the shaft shoulders in shrinking. If
movement has occurred, use a suitable sized
sleeve and a press to reposition the bearings
against the shaft shoulders.
If heating the bearings is not practical, use a suit-
able sized sleeve, and an arbor (or hydraulic) press
to install the bearings on the shaft.
When installing the bearings onto the
shaft, never press or hit against the outer
race, balls, or ball cage. Press only on the
inner race.
Slide the shaft and assembled bearings into the in-
termediate bore until the inboard bearing (45) is
fully seated against the bore shoulder. Be careful
not to damage the oil seal lip on the shaft threads.
When installing the shaft and bearings into
the bearing bore, push against the outer
race. Never hit the balls or ball cage.
Apply a light coating of oil to the lip of the outboard
oil seal (41), and press it into the bearing cap (38)
with the lip positioned as shown in Figure 2. The
face of the oil seal should be just flush with the
outer face of the bearing cap.
Install the wavy washer (42) and bearing cap gas-
ket (36), and secure the bearing cap to the interme-
diate with the capscrews (37). Be careful not to
damage the oil seal lip on the shaft keyway.
Lubricate the bearings as indicated in LUBRICA-
TION at the end of this section.
Securing Intermediate And Drive Assembly To
Engine
(Figure 3)
If the drive pins (4) were removed from the drive
plate assembly (3), install the new pins by pressing
them into the drive plate and peening the ends. Se-
cure the drive plate assembly to the engine fly-
wheel with the hardware (8 and 9).
If the dyna flex joints (7) were removed from the
drive arm assembly, lubricate the O.D. of the re-
placement dyna flex joints with a fine film of rubber
lubricant (Parker O Lube or equivalent), and press
them into the drive arm until centered.
Install the impeller shaft key (5) and press the drive
arm assembly (6) onto the impeller shaft.
Make certain that the drive plate and drive
arm assemblies are mounted in accor-
dance with the dimensions shown in Fig-
ure 3. THESE DIMENSIONS ARE CRITI-
CAL. If the drive arm assembly is not prop-
erly positioned on the shaft, a preload con-
dition can cause premature bearing failure.