Unibloc-Pump 54001010P20H6010T12E, Руководство по эксплуатации и обслуживанию

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30 UNIBLOC-PD Operation & Service Manual: PD200-576
4.5.1 Bearing housing Disassembly
Remove the front cover, rotors, housing and shaft seals as de-
scribed in section 4.4. Drain oil from the bearing housing by
removing the drain plug, if available, or by removing the cover
(7). Open the tab on the tabwashers (12) and remove them and
the slotted nuts (13). With a rubber mallet, strike the ends of the
shafts where the tabwashers were located to loosen the gears
(8) and remove them. Be sure not to damage the threads on the
shafts. The keys (21) will now be exposed and can be removed
with a flat tipped screwdriver. Continue striking the shafts with
the rubber mallet to push the shafts and the oil seals (23), which
will get damaged and will have to be replaced, out of the bearing
housing. Each shaft will have one bearing (9) located next to a
shoulder. To remove them, if necessary, do so with a hydraulic
press or tap with a punch or sleeve on the edge closest to the
shoulder. Use caution to prevent damage to the shaft shoulder.
Tap the bearing cups, (9) and (10), in a circular pattern to re-
move them from the bearing housing. Behind cup (9) are the
shim rings (11) which can now be removed.
4.5.2 Bearing housing Assembly
See section 4.5.2.1 for complete pump assembly. The steps
for assembly assume that the pump has been completely
disassembled. Make sure all parts are clean and free of
debris before proceeding. New oil seals are required to
complete the assembly.
4.5.2.1 Pump Assembly - Stainless Steel
Rotors
Insert the shim rings (11) into the front bores of the bearing
housing (6). Oil the front (9) and rear (10) bearing cones
and tap them into the bearing housing so that the tapered
edge can be seen when looking into the bearing housing.
If the bearings have been removed from the shafts, they
must be pressed on with a hydraulic press before the shafts
are installed into the bearing housing. Oil the shafts at the
bearing seat location and slide the bearings on so that the
text on the bearing shoulder will make contact with the
shaft shoulder. Use extreme caution to not damage the
bearing components or the splined shaft end when using
the hydraulic press. Place a non-metal object between the splined shaft end and the hydraulic press to prevent damage to the shaft.
Insert both shafts and stand the pump on the splined ends. Slide the rear bearings on, tap the keys (21) into place, and then slide on
the gears (8), shoulder side towards the bearings. Make sure the timing marks are aligned. Tap on the gears to seat the bearings prop-
erly. Slide on the tabwashers (12) and thread on the slotted nuts (13). Slide on the rotors (3a) and place a nonmetal object between
the rotors to keep the shafts from turning. Tighten the nuts so that the shaft rotating torques shown in section 5.3 are achieved. The
torque can be measured by inserting the rotor bolts (14a, 14b) in the splined shaft ends with the rotors on. Do not set the tabs on the
tabwashers. Remove the rotor bolts and rotors. Push the rotor housing (1) onto the dowels (20) in the bearing housing and tap gently
with a rubber mallet to seat it properly. Insert the housing studs (15) and secure them with the split washers (44) and hex nuts (43).
The UNIBLOC 200, 250, and 275 have one piece studs (15) and do not use items (43) and (44). To tighten these studs lock two M6
nuts against each other on the stud end. Slide the rotors (3a) on to the corresponding shaft. One rotor and one shaft will be marked
with identical symbols. Secure the rotors with the rotor bolts (14). Measure the clearances between the rotors and the housing. If
the measured values at positions 8-11 do not correspond with those listed in section 5, then the shim ring(s) (11) must be changed.
Remove the rotor bolts, rotors, studs, and then the housing. Unscrew the slotted nuts and remove the tabwashers. Remove the shafts,