CTD CM325R, Инструкция по эксплуатации и руководство по техническому обслуживанию, Страница: 19 / 34

200 Series and CM325R Spindle Assemblies and Bearing Installation Instructions:
For Models M25R, F255R, and CM325R (refer to sketch on following page).
It is suggested that replacement spindle assemblies be purchased from CTD before disassembling. Old
spindles can be returned for bearing replacement and slinger refacing for a nominal fee. The 200R Series
and CM325R spindle assemblies provide for a “slip-fit” between the outer races of the bearing and the
housing or arm casting, and a “press-fit” between the inner race and the spindle. Great care must be taken
with ball bearings or the life of the bearings will be reduced. To remove the spindle assembly:
A. Loosen motor and remove belts.
B. Remove Spindle Pulley Nut #9 by holding pulley or slinger. Loosen set screws in pulley.
C. Remove Pulley #8, Pulley Key #13, and Spindle Spacer #7 (200R Series only). Place Pulley Nut #9
back onto spindle to protect threads.
D. With a soft hammer or rubber mallet, gently drive spindle towards blade side. Take care to protect
pivot bearings by holding arm casting on blade side to overcome effects of hammer blows.
E. Remove Pulley Nut #9, again.
F. Spindle assembly, consisting of Spindle #1, Slinger #3, and Blade Bearing #4 will come out of housing.
Outside bearing will slip out of housing. If a replacement spindle assembly was purchased, go to
item “L”.
G. If bearing on the blade side must be replaced, an arbor press must be used to disassemble the bearing
and the slinger from the spindle. Great care must be used in disassembling, or the spindle will be scored
or stripped by the slinger. Before pressing apart, scribe a line on the face of the spindle and the slinger
so that they will be re-assembled in exactly the same position in relation to each other. Use an arbor
press or pulley puller.
H. Press off slinger and bearing from spindle.
I. Press new bearing on to spindle, making sure spindle is square to the bore.
J. Replace slinger, as above, making sure scored lines match.
K. The face of the slinger must be checked to make sure the face (next to the blade) is running true.
If it is not running true, it should be refaced. Slinger should indicate < .001. To reface:
1. Partially assemble pulley bearing on spindle.
2. Hold outer races of both bearings gently in a vise.
3. Use the side of a surface grinder wheel to dress the face of the slinger by rotating spindle in bearings
slowly against the direction of the grinding wheel.
L. Clean bearing hole and slip new spindle assembly into arm casting up to snap ring. From the opposite
side of the arm, make sure that belleville springs #6 are assembled in housing as shown in Diagram
on Page No.18.
M. To re-assemble spindle assembly, slide outside bearing #4 onto the spindle as far as it will go, being
careful that bearing goes into housing square.
N. Slide pulley onto shaft with pulley key and spacer (for 200R Series only--no spacer is required on the
Model CM325R.)
O. Hold slinger or spindle nut. Replace jam nut on spindle threads and slowly tighten pulley jam nut.
This will push bearing onto shaft. Tighten thoroughly.
P. Since motor was moved, the centerline of the motor shaft and spindle must be parallel. Both pulleys
must be in line or belts will not wear evenly. This should be checked by placing a straight edge across
both pulley grooves. Tighten motor.
Q. Belt tension is of critical importance. To obtain proper tension, press down on top of belts with
moderate amount of pressure. Belts should deflect approximately 1/4”.
R. Tighten set screw in both pulleys. To check assembly after tightening belts, apply pressure in the
direction of the blade on the pulley nut. A slight spring pressure should be felt. If spindle does not
spring back, the belts may be too tight.
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