Service and Maintenance
BXC34 / BXC34 Bundle
Wood Chipper
40
9.6.4 Align the Rotor Sheave
If the rotor sheave loosens on the shaft, it can become
misaligned with the engine clutch and result in poor belt
alignment.
1
2
4
3
5
6
01178
Fig. 28 –
Rotor sheave
1. Sheave bolts
2. Threaded puller holes
3. Shaft key
4. Sheave hub
5. Sheave
6. Set screw
1.
Remove the drive belt.
For instructions, see
Replace the Drive Belt on page 37
.
2.
Remove the set screw from the sheave (6).
3.
Remove the sheave bolts (1), and then thread them into the
puller holes on the sheave hub (2).
4.
Slightly separate the hub and the sheave, so that they can
move on the shaft. Turn in both bolts evenly in 1/4-turn
increments.
5.
Lightly tap the sheave hub with a block of wood to move
it in or out on the shaft until it aligns with engine clutch
sheave.
6.
Place a straight edge along the face of the engine clutch
and rotor sheave to make sure that they are aligned.
7.
After the rotor sheave is aligned, insert the hub bolts and
snug them up to the sheave. Repeat step 6 to check the
alignment.
8.
Tighten the hub bolts evenly in 1/4-turn increments until
they are firmly seated.
9.
Install and tighten the set screw. Repeat step 6 to check the
alignment.
10.
Check the drive-belt tension. If required, set the tension.
11.
Install the drive-belt guard.
02012
Fig. 29 –
Example of rotor sheave misalignment