FRBH, FRBHX AND FRBHS USER INSTRUCTIONS ENGLISH 71569178 20-08
Page 44 of 60
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6.10.2
Line bearing
a) Pack the line bearing with grease if the bearings are
being grease lubricated.
b) Lightly lubricate the pump shaft [2110] at the line
bearing position. Install the radial ball bearing [3011]
on the shaft. Use an induction heated or hot oil bath
to first heat the bearing [250
F recommended],
press the bearing on shaft with the aid of a sleeve
designed to push the inner race only. Note that the
bearing must remain square to the shaft during
assembly and that the inner race must seat on the
shaft shoulder. Protect the bearing by wrapping with
a clean, lint free cloth.
6.10.3
Thrust bearing
a) Pack thrust bearing with grease if the bearings are
being grease lubricated.
b) Place the thrust bearing clamping ring [2542] loosely
over the shaft on the largest diameter.
c) Install the angular contact bearings [3031] on the
pump shaft [2110] using the same procedure as
described in step 6.10.2. The bearings are mounted
back to back as shown.
d) Slide the bearing lockwashers [6541] on the shaft
and fit the bearing lock nut [3712]. Tighten the
locknut snugly and allow to cool. Check the
tightness and bend one tab on the lockwasher into a
slot in the locknut. Protect the bearings from
contamination.
e) Carefully install the lip seal [4300.1] in the thrust
bearing housing [3230] by pressing it squarely into
the bore. The primary sealing lip [spring loaded] on
seal should be installed facing the bearing. A small
amount of sealant may be applied on the O.D. of the
seal prior to its' installation.
f) Install the square head plug or grease fitting on the
tapped hole in the thrust bearing housing flange.
Lubricate the O-ring [4610.4] with the bearing
lubricant and assemble it into the groove of the outer
circumference of the thrust bearing housing [3230].
g) Lubricate the inside bore of the thrust bearing
housing [3230] and assemble it over the thrust
bearings. Care must be taken to prevent damage of
the seal on the shaft.
h) Using capscrews and lockwashers, attach the thrust
bearing clamping ring [2542] to the thrust bearing
housing [3230]. Lock the threads using Loctite 242
or equivalent.
The thrust bearing clamping ring [2542] is
provided with one extra hole midway between two
adjacent bolt holes to permit free oil flow. On oil
lubricated units, this hole must align with the cast oil
return at the bottom of the thrust bearing housing bore.
For grease lubricated units, this hole should be oriented
away from the cast oil return slot at the bottom the thrust
bearing housing bore.
Tighten the capscrews evenly ensuring that the clamp
ring is not distorted and gap to the bearing housing is
even all around. Tighten in accordance with Table 6.6.
6.10.4
Frame assembly
6.10.4.1
Frame 1, 2 & 3
a) Place the bearing frame in a vertical position with the
large flange resting on wooden support blocks
sufficiently high to allow the shaft from contacting the
floor when it is installed.
b) Lift the shaft assembly into a vertical position and
lower it into the bearing bracket [3130]. Note the
square head plug (or grease fitting in the thrust
bearing housing [3230] must align with the threaded
plug [6578] in the bearing bracket [3130].
6.10.4.2
Frame 4 for 18FRBH274 & 20FRBH304
only
a) Assemble the adapter [1340] to the bearing bracket
[3130].
6.10.4.3
Frame 4 only
a) Place the shaft assembly in a vertical position with
the thrust bearing housing [3230] resting on the
flange face and supported by blocks or clamps.
Access to one through hole in the thrust bearing
housing is required to attach one bolt.
b) Lift the bearing bracket assembly [3130] vertically and
lower over the shaft assembly. Manually guide the line
bearing outer race into the bearing frame bore. Ensure
that the thrust bearing housing [3230] and frame [3130]
are oriented as in Step 6.10.4.1 b). This will ensure that
the oil return slot in the thrust bearing housing [3230] is
properly located.
6.10.4.4
All frames
a) Install at least one thrust bearing housing to bearing
frame hold down capscrews complete with
lockwasher to prevent the assembly from coming
apart when lifting.
b) Place the bearing frame assembly into a horizontal
position.
