26 UNIBLOC-PD Operation & Service Manual: PD600-677
4.5.2 Bearing Housing Assembly
The following steps assumes that the pump has been
completely disassembled. Make sure all parts are clean
and free of debris before proceeding. New
Oil Seals
and
O-Rings
are required to complete the assembly, as well
as new
Bearings
, if applicable. Lubricate all bearing,
gear, oil seal, and shaft contact surfaces with oil. These
surfaces are highlighted in red below (see fig. 4.16).
Slide the
Front Bearings
on the
Drive and Lay Shafts
(see fig. 4.17).
Fix the
Drive and Lay Shafts
taking care not to dam
-
age the shaft seal and oil seal areas. Press on the
Front Bearings
using a hydraulic press and sleeve.
Place a clean, smooth steel plate on the splined end of
the shaft to protect it. Assembly sleeve
6190A
with the
proper bearing contact lip and guide is available from
Unibloc-Pump (see section 6.3.2). Make sure the sleeve
does not damage the threads or surfaces of the shaft
(see fig. 4.18).
If press is not availabe, it is possible to install the bear
-
ings by heating them before placing on the shafts. For
detailed instructions contact your distributor or Uni-
boc-Pump.
Make sure the bearings seat firmly against the shaft
shoulders (see fig. 4.19).
Slide on the
Shoulder Rings (Front Bearing)
. Thread
on the first
Slotted Nuts (Front Bearing Retaining)
and
tighten to secure the shoulder rings to the bearings. Slide
on the
Tab Washers (Front Bearing)
and then thread on
the
Slotted Nuts (Front Bearing Locking)
and tighten.
Lock both slotted nuts by bending at least one tab washer
tab into each nut (see fig. 4.20).
fig. 4.16
fig. 4.17
ASSEMBLY SLEEVE (P.N. 6190A)
FRONT BEARING
STEEL PLATE
SPLINED END
fig. 4.18
FRONT BEARING
SHAFT SHOULDER
fig. 4.19
FRONT BEARINGS
SHOULDER RINGS
(FRONT BEARINGS)
SLOTTED NUTS
(FRONT BEARING RETAINING)
SLOTTED NUTS
(FRONT BEARING LOCKING)
TAB WASHERS
(FRONT BEARINGS)
fig. 4.20