Checking/Adjusting Pulley Alignment - Grizzly G0841 Owner's Manual

4. Loosen jam nuts on motor stop hex bolts
(see Figure 93).
5. Loosen rear motor stop hex bolts (see
Figure 93) 3–5 turns.
IMPORTANT: Turn motor stop hex bolts
same number of times.
Rear
Jam Nuts
Motor Stop
Hex Bolts
Figure 93. Location of upper cutterhead motor
positioning hardware.
6. With help from another person, slide upper
cutterhead motor towards rear of machine
until there is slack between V-belts and
pulleys.
7. Remove V-belts and replace them with a
matched set. Make sure ribs of V-belts belt
are seated in pulley grooves.
8. With help from another person, slide upper
cutterhead motor towards front of machine
until there is no slack between V-belts and
pulleys.
9. Tighten rear motor stop hex bolts same num-
ber of turns as loosened in Step 5.
10. Tension V-belts. (Refer to Steps 3–9 of
Tensioning Upper Cutterhead V-Belts on
Page 60).
11. Once V-belts are properly tensioned, tighten
jam nuts to secure motor in position.
12. Re-install upper cutterhead belt cover.
-62-
Front
Jam Nut
Checking/Adjusting
Pulley Alignment
checking adjusting pulley alignment
To reduce risk of shock or
accidental startup, always
disconnect and lock-out
machine from power before
adjustments, maintenance,
or service.
Proper pulley alignment is important for optimum
power transfer and belt life. Pulley alignment is
adjusted by slightly repositioning the motor on the
motor mounting plate.
Lower Cutterhead Pulley
Item(s) Needed:
Adjustable Wrench ............................................ 1
Wrench Open-Ends or Socket 14mm ................ 1
Hex Wrench 5mm .............................................. 1
To check and align pulleys on lower cutterhead:
1. DISCONNECT AND LOCK-OUT MACHINE
AT POWER SOURCE!
2. Open chain drive access door and remove
lower cutterhead belt cover.
3. Visually check alignment of both pulleys
to make sure they are aligned and V-belts
are straight up and down, as shown in
Figure 94).
Figure 94. Pulleys correctly aligned.
Model G0841 (Mfd. Since 06/18)
Qty
Cutterhead
Pulley
Alignment
Motor
Pulley