15
O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.0522/629371 - 629923 Fax 0522/628980
E-mail:info@omacpompe.com SitoWeb:www.omacpompe.com
Rev.4 del 01/2011 O.M.A.C. s.r.l.
Chap.5 - pag.
31 Assemble the pre-assembled rear bearing, tighten the ring nut inserting a
spacer suitable for replacing the gear, in order to keep assembled the bearing
during the assembling operations
32 Set the spacers for axial shaft adjustment and assemble the shafts with the
already fi xed bearings
33 Set the O-ring gasket in its seat and assemble the bearing retainers with oil
lip seal already fi xed. Assemble the rotor case and rotors as previously descri-
bed and check the “Clearences” (see chap.1)
34 If rotor clearances are not included in tolerances as per chap. 1, disas-
semble rotors, the rotor case and adjust the spacer according to the requested
dimension. N.B. A spacer set can be requested to the manufacturer company
35 Remove the spacers used for the assembly and insert the keys for gear
drive in their seats with a lightly forced connection
36 The gear couple is composed by a fi xed
gear and an adjustable one. Assemble the fi xed
gear, then the adjustable one with untightened
screws, taking care to a fi rst approximate rotor
timing
37 Tighten the retainer ring nuts with the corre-
sponding safety washers and set rightly the sui-
ted retainer key. In order to avoid turning during
operation insert a wedge in soft material among
the gear teeth
38 Being the wedge inserted among the gears
tighten the rotor nuts, taking care of the driving
torque (see chap.1)
39 Time perfectly the rotors and tighten the
screws of the adjustable gear gradually, che-
cking the rotor timing
N.B. IN CASE OF RE-TIMING IT’S NECES-
SARY TO REPLACE THE PLANE WASHERS,
CAVED BY PREVIOUS CLAMPING
Tighten completely the adjustable gear screws
taking care of the driving torque (see chap.1)
40
Assemble the gear cover, taking care to set the
O-ring gasket and insert the key on the shaft.
Put into bearing housing the oil quantity as per
chap.1
30 - B2 - B3
B4 - B470 - B490
31 32 33
34 35 36
37 38 39
40
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