Toro 22533, Operator'S Manual, Page: 17 / 20

3. Start the machine and slowly engage the
forward-flow auxiliary hydraulics to drive the
chain onto the upper wear strip of the boom.
Important:
If the chain is not aligned or
engaged with the drive sprocket, shut off the
machine, remove the key, and align the chain
to the drive sprocket.
Note:
Maintain tension on the strap until the
end of the chain is on the upper wear strip.
4. Lower the lifting strap as the chain moves
around the sprocket and into position on the
upper wear strip.
5. Shut off the auxiliary hydraulics when the end of
the chain is positioned on top of the idler wheel
(
Figure 19 ).
g272493
Figure 19
1. Lifting strap 3. Idler wheel
2. Digging chain
6. Shut off the machine and remove the key.
7. Remove the lifting strap from the machine.
Linking the Digging Chain
1. At the end of the chain laying on the ground,
loop the lifting strap around the chain at the
digging tooth of the fifth or sixth link of the chain
(
Figure 19 ).
2. Raise the chain and position it around the idler
wheel (
Figure 19 and Figure 14 ).
Note:
Rotate the auger as necessary to engage
the teeth of auger drive sprocket with the digging
chain.
3. Clamp the ends of the chain with a with a chain
clamp at the link rollers at either side of the inner
and outer plates at the master pin (
Figure 14 ).
4. Align the hole of a link roller with the holes in the
inner plates at the end of the chain (
Figure 15 ).
5. Align the holes in the inner plates and the roller
of the chain with the holes in the outer plates of
the other end of the chain (
Figure 15 ).
6. Align the master pin with the hole in the pin
parallel with the chain plates forward of the idler
wheel (
Figure 15 ).
7. Insert the master pin through the digging chain
plates.
8. Insert the safety pin through the master pin
with the head of the pin toward the idler wheel
(
Figure 15 ).
Important:
Do not install a used safety pin.
Only use a new safety pin.
9. Remove the lifting strap and the chain clamp.
10. Bend the tail of the safety pin down 30° to 45°
(
Figure 15 ).
11. Install the spoils auger; refer to 4 Installing the
Spoils Auger (page 8) .
12. Adjust the tension of the digging chain; refer to
Adjusting the Chain Tension (page 17) .
Adjusting the Chain
Tension
Service Interval: Before each use or daily—Check
the chain tension.
With the trencher parallel to the ground, ensure that
there is approximately 2.5 cm (1 inch) between the
bottom of the boom and the top of the bottom chain
span. If not, adjust the chain using the following
procedure:
1. Park the machine on a level surface, disengage
the auxiliary hydraulics, engage the parking
brake, and lower the loader arms.
2. Shut off the engine and remove the key.
3. Rotate the jam nut closest to the tube to adjust
the tensioning bolt until there is approximately
2.5 cm (1 inch) of slack between the bottom of
the boom and the chain (
Figure 3 ). Tighten the
other jam nut against the first jam nut.
Note:
Ensure to adjust the jam nuts on both
bolts evenly.
4. Loosen the 4 nuts securing the crumber to the
trencher and slide it outward so that there is at
least 5 cm (2 inches) between the chain and the
crumber plate (
Figure 5 ).
5. Tighten the 4 nuts.
17