Toro 22533, Operator'S Manual, Page: 16 / 20

Removing the Digging Chain from the Machine
1. Lower the lifting equipment until the end of the
digging chain is laying on the ground (
Figure 16 ).
2. Remove the lifting strap.
3. Start the machine and lower the boom until the
idler wheel is positioned 31 to 36 cm (12 to 14
inches) above the ground (
Figure 16 ).
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Figure 16
1. Digging chain 3. Idler wheel
2. Lifting strap 4. Clearance 31 to 36 cm (12
to 14 inches)
4. Start the machine and slowly engage the
forward-flow auxiliary hydraulics.
5. When the digging chain has cleared the drive
sprocket, shut off the auxiliary hydraulics, shut
off the machine, and remove the key.
6. Wrap the lifting strap around the digging chain at
the idler wheel, and attach the strap to the lifting
equipment (
Figure 16 ).
7. Raise the lifting equipment and remove the
digging chain from the boom (
Figure 16 ).
Installing the Digging Chain
Preparing to Install the Digging Chain
1. Park the machine on a level surface, lower the
loader arms, and tilt the boom to the horizontal
position.
2. Shut off the engine and remove the key.
3. Lay the digging chain on the ground in a straight
line, below the lifting equipment such as a
hoist, and with the cutting face of the teeth
pointing toward the path where you will move
the machine (forward) to position it over the
digging chain (
Figure 17 ).
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Figure 17
1. Lifting strap 2. Digging chain (teeth down
and forward)
4. At the forward end of the chain, loop a 3.65
m (12 foot) lifting strap with a lifting capacity
of 181.4 kg (400 lb) around the chain at the
digging tooth of the third or fourth link of the
chain (
Figure 17 ).
5. Start the machine and position the trencher
boomover the digging chain and with the lifting
strap forward of the drive sprocket of the
trencher (
Figure 17 ).
Note:
When positioned correctly, the boom of
the trencher is aligned with the digging chain.
6. Turn the machine off and remove the key.
Aligning the Digging Chain
This procedure requires 2 people to align the digging
chain to the machine.
1. Route the ends of the lifting strap forward of
the sprocket hub, on either side of the drive
sprocket.
g272496
Figure 18
1. Lifting strap
3. Drive sprocket
2. Digging chain
2. Connect the ends of the lifting strap to the lifting
equipment, and raise the end of the chain until
the drive pins engage the drive sprocket (
Figure
18 ).
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