Page 6 • MN01029 Issue/Rev. 0.5 (6/11)
Section 1 – General Information and Description (continued)
Figure 16
Figure 18
3. Remove rotor assembly, Figure 19, and clean rotor
and housing interior.
•Liftstraightuptopreventdamagetotherotorblades.
•Ifmeterhasbeeninserviceoncrudeoiloranyother
viscous liquid, a solvent should be used to dissolve
the residue. Do not use water.
•Atreassembly,caremustalsobetakenthatjack-
shaftgearandrotorgear,Figure17,areproperly
meshedwhencoverissecuredtohousing.This
can be accomplished byslowly turning single
piniongear,ontopofcover,untilrotorandjack-
shaft gears mesh.
•Atreassembly,theslotinthelocatingarmmust
belinedupwiththelocatingarmpininthebot-
tomofthehousing,Figure20.
•Besureadjustingspring,Figure20,isreinstalled
at time of reassembly.
Figure 19
6. Figure 16 shows the rotor shaft inside the rotor body.
•Therotorbody,shaft,androtorcover(removedin
Figure 12) are factory-assembled and matched as
one integral piece. Therefore, if any one of these
items is damaged, the complete assembly (body,
shaft, and cover) must be replaced.
Disassembly of Model T-20, T-40, I-150, SC,
SD, SF, and SG Meters
Removing Rotor Assembly From Housing
1. Remove all accessories and calibrator from top of
meter.
•Ifdifcultyisencounteredinremovingthecalibrator,
the adjusting stem assembly may have to be taken
out of the meter cover. Refer to Page 14 for adjusting
stem removal.
2. Remove meter housing cover, Figure 17.
•Slotsareprovidedaroundtheperimeterofthecover
to assist in prying the cover of the housing.
•Whenreplacingcover,positionadjustingscrewso
that bottom of screw is flush with bottom of shaft
bearing hub, Figure 18. If adjusting screw is allowed
to protrude too far into the cover bearing hub, dam-
age to the cover could result when cover is secured
to the housing.
•Beforereplacingcover,applyathinlayerofseal-
ant (Master Gasket by Loctite is recommended)
aroundtheperimeterofthecovertoformaseal
betweenthehousingandcover.Ifasealantisnot
used,uidmayleakoutofthecover.
Figure 17
NOTE:MeterswithO-RingsDONOTrequirea
Master Gasket.
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