Operator's Manual

23
MAINTENANCE
B. Insert pry bar into frame slot (Fig. 32) and pry
idler towards belt.
C. Tighten nut while maintaining pressure on pry
bar.
1. Idler pulley
2. Idler pulley nut
3. Frame slot
Figure 32
1
3
2
D. Rotate crankshaft pulley two full turns to seat
belt in pulley grooves.
E. Check belt tension.
REPLACING BELTS
1. Loosen idler pulley nut to release tension on belt
(Fig. 32).
2. Remove idler pulley nut and remove pulley.
3. Loosen tine arm bolts (R.H. and L.H. threads).
4. Remove fasteners securing bottom of tine arm or
rotalink arm to bottom links (Fig. 33). Align tine arm
with slot in frame and slide off crank pin.
1. Tine arm
2. Bottom link
3. Rotalink arm
4. Lower link bearings
Figure 33
1
2
3
4
5. To ensure components are re-installed correctly,
mark location of end cover on aerator frame (Fig. 34)
6. Remove (8) capscrews and flat washers securing
end cover and bearing housing to end of aerator frame
(Fig. 34).
1. End cover
Figure 34
1
7. Loosen bearing set screws (Fig. 35).
NOTE: Fit of bearing to shaft may/will make removal of
bearing from shaft very difficult. It may be easier to
remove bearing from end plate.
Figure 35
1. Bearing
1
8. Remove end cover and bearing.
NOTE: Remove only the end cover necessary to
access belts being removed, i.e.
Left cover - Left belts
Right cover - Right belts
9. Slide belts off driven and driver pulleys.
10. Remove belts from aerator by routing them over
drive shaft, thru holes in frame center plates, over
bearings and out hole in end of frame.
IMPORTANT: When changing belts, always change
both belts on the pulley.
11. Route new belts over drive shaft and onto pulleys.
12. Reinstall end cover onto drive shaft. At location
marked on frame, secure end cover to aerator frame
with (8) capscrews and flat washers removed.
13. Reinstall top of tine arm to pulley with screw, lock
washer and flat washer (R.H. and L.H. threads).
14. Reinstall bottom of tine arm to bottom links or
rotalink arm with fasteners removed.
15. Adjust belt tension. Refer to Adjusting Belt
Tension, page 22.
NOTE: The heavy duty sealed bearings used in the
lower links of the ProCore 660 and 880 aerators may be
used as replacement bearings in the lower links for the
ProCore 440 (Fig. 33). When the wider heavy duty
bearings are used, eliminate flat washer/spacers
normally used with narrower bearings.