Rockwell 70-602, Technical Manual

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6. Loosen the two set screws (A) in collar (B) Fig.
5 and remove collar.
7. With a hard rubber mallet, tap spline end of spin-
dle (C). The spindle (C) with bearing (D) and flinger
collar (E) will come out of the quill (F) Fig. 5.
8 . U s i n g a n a r b o r p r e s s , r e m o v e b e a r i n g ( D ) a n d
flinger collar (E) from spindle (C) Fig. 5.
9. To replace spindle, reverse above procedure mak-
ing sure the bearing (D) and flinger collar (E) have
been pressed tight against the shoulder on the spindle
(C) Fig. 5, before replacing spindle in quill.
10. After replacing collar with set screws (A & B)
Fig. 5, on the spindle, be sure there is not end play
b e t w e e n s p i n d l e a n d q u i l l . P l a y i s e l i m i n a t e d b y
seating both bearings in quill.
11. When replacing quill in head casting, rotate spin-
dle if necessary to engage spline in pulley.
12. After the quill is replaced, adjust the spindle re-
turn spring.
ADJUSTING BELT TENSION
Fig 5 - Changing Spindles
The correct belt tension is determined by the center to
center distance of the motor pulley (A) and the spindle
pulley (B) Fig. 6. If it ever becomes necessary to ad-
just belt tension, proceed as follows:
1. Disconnect the machine from the power source.
2. Loosen the three screws (C) Fig. 6, and while mak-
ing sure the motor pulley (A) is in parallel alignment
with the spindle pulley (B), move the motor and motor
plate (E) in or out until the center to center distance
between the motor and spindle pulley is 20”, as shown
in Fig. 6. NOTE: For clarity Fig. 6 is shown with the
belt guard removed.
Fig 6 - Adjusting Belt Tension
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