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HF-7-604 Page 42
10. Bearings and Oil Slingers Installation - Drive End
NOTICE
1. Make sure oil slinger are fully seated.
2. New oil slinger should be installed each time the bearing housing is removed.
3. The maximum load applied to this all thread rod must never exceed 5 tons.
41.
Repeat steps 26, 27 and 28 to install oil slingers on the drive end.
42.
Install three 0.030 inch shims (25) onto the idler (short) rotor shaft.
43.
Install three 0.030 inch shims (25) onto the drive (long) rotor shaft.
44.
Locate the two spherical roller bearings (12) that are to be installed on the drive
end of both rotors. The gear end bearings and the drive end bearings are the
same physical size and appear to be the same part.
45.
Apply oil to the drive and idler rotor bearing bores in the drive end bearing
housing. Lubricate internal surfaces and rollers of bearings with oil. Drain
excess oil from bearing before installation. Oil should not be dripping from
bearing in mounted position.
46.
Place a bearing over the idler rotor shaft with the numbers on the bearing
facing up. Screw the all thread rod (T3) into the end of the idler rotor shaft .
Place the bearing insert tool (T15) and the driver tool (T 22) over the all thread
rod (T3). Place the hydraulic cylinder (T28) over the all thread rod (T3) and onto
the driver tool. Place the bushing ( T7),
fl
at washer (T2) and the heavy hex nut
(T1) over the all thread rod and tighten it up against the hydraulic cylinder.
Press the bearing onto the rotor shaft using the hydraulic cylinder.
47.
Repeat step 45 for the drive rotor on the drive end.
48. Measure
the
fi
xed end (gear end) axial clearance for both rotors (with the
assembly in the vertical position and the drive end on top). This can be
accomplished by inserting feeler gauges between the end of the rotor lobe and
the inner surface of the bearing housing. This clearance should be measured
and recorded for all 3 lobes on both rotors. Compare these clearances to the
requirements for the clearance shown in table. Do not proceed with the
assembly if these measurements are not equal to or greater than the minimum
speci
fi
ed in clearance table on page 41.
49.
Position the assembly vertically with the gear end on the top.
50.
Repeat step 48 (with gear end on top) to measure and record the
fl
oating end (drive end) axial clearance.
51.
With the gear end on top, measure and record the gear end axial clearance for all three lobes on both rotors.
Note there are no speci
fi
cations on the clearance drawing for this measurement. This measurement will be used
to determine the axial movement of the bearings.
52.
Using feeler gauges measure the clearance between the rotor tips and the air cylinder. This measurement should
be taken for the drive rotor and the idler rotor. The
fi
rst measurement for both rotors should be taken on the inlet
side of the air cylinder (by going through the inlet port). The second measurement should be taken on the
discharge side of the air cylinder (by going through the discharge port). The clearance should be measured along
the entire length of the lobe and for all three lobes on each rotor. Record these clearances and verify that they are
equal to or greater than the minimum speci
fi
ed in clearance table.
Summary of Contents for HELIFLOW 8 Series
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