Post Maintenance Check - OMAC B Series Operation And Maintenance Manual

30
Assemble the rotor case as previuosly
described; tighten the retainer ring nut with the
corresponding lock washers and set rightly the
retainer keys. In order to avoid turning during
operation insert a non metal wedge between
rotors
31
If clearance are not included in tolerances
as per cap.4.3, untighten the screws which lock
the back bearing supports, remove the spacers
and adjust them according to the requested di-
mension.
N.B. a spacer set can be requested to the manu-
facturer company
32
Time perfectly the rotors and tighten the screws of the adjustable gear gradually checking the rotor timing. You can reach the adjustable gear through
a window arranged on the top of the bearing housing
33
Tighten completely the adjustable gear screws taking care of the driving torque as described in chap.4.5
N.B. IN CASE OF RE-TIMING IT'S NECESSARY TO REPLACE THE PLANE WASHERS, CAVED BY PREVIOUSLY CLAMPING
34
Assemble the gear cover, taking care to set the O-ring and insert the key on the shaft. Put into gear box the oil quantity as per chap. 1
B550-B660-B680 PUMPS DRIVE SHAFT POSITION INVERSION
1
To invert the position of the drive shaft, one must completely disassemble the shafts from the pump body, as per instructions
above.
IMPORTANT!
Re operation n. 20: mark the B rotors, bearings supports (/%) and the adjustment spacers (11) to position them on the same shaft during assembly.
2
Remount the shafts in inverted positions, each with its details marked during disassembly. The gears must stay
in the original position with the same tooth and opening in the previous position to keep the timing. When the assembly is complete, check that the
clearances and the timing are within the tolerances under chapter 4.3. Introduce the amount of oil indicated in chapter 1.

5.10 POST MAINTENANCE CHECK

After maintenance activities, one must carry out tests to ensure the proper operation of the LDPU, before restarting the unit. To carry out these tests refer
to the check-list of section 4.5.1 of this manual.
20
Chap.5 - pag.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy
E-mail:info@omacpompe.com SitoWeb:www.omacpompe.com
30
33
O.M.A.C. s.r.l.
Tel.0522/629371 - 629923 Fax 0522/628980
Rev.4 del 01/2011 O.M.A.C. s.r.l.
31 32
34