First Products UA60T, Руководство оператора и список запчастей

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First Products UA-60T Operator’s Manual
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22
Timing the Rotor Shaft
1. Use marker pen to assist with aligning timing
marks between rotors. Mark two rotor shaft flats
180 degrees apart next to the threaded end (see
Figure 19 and Figure 20
) . The marked flats
would have to align with the timing marks on
any rotors not removed during servicing.
2. Install the required components in the sequence
shown in parts break down (page 35), double-
checking the timing mark locations and spacer
as each rotor is installed.
NOTE: The spacers must be fully seated in each
adapter counterbore before tightening. Do Not
forget to place the bearing stampings on each of the
shaft bearings during reassembly.
3. Replace the 1-1/8" hex jam nut and rotate each
rotor occasionally as the nut is torqued to 350 ft-
lbs. If any rotor locks up, the bearing adapters in
the rotor are probably not phased 180 degrees
apart or the spacers are not fully seated.
Figure 19 Rotor Timing Mark Reference
IF THE BEARING ADAPTERS ARE NOT
PRECISELY TIMED 180 DEGREES APART IN
EACH ROTOR; SERIOUS DAMAGE WILL
RESULT.
CLEAN THE ROTOR SHAFT THOROUGHLY
REMOVING ANY BURRS THAT WOULD KEEP
THE ROTOR ASSEMBLIES FROM SLIDING
ON FREELY. IF A BEARING ADAPTER JAMS,
THE INTERNAL BEARING SEAL COULD BE
FORCED OUT AND IT IS NOT REPLACEABLE.
Figure 20. Timing First Four Rotors