Toro 25200, Руководство оператора

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6. Measure the distance between the chain and the bottom
of the lower wear strip (
Figure 31 ).
•
If the gap between the lower wear strip and the
chain is 51 to 76 mm (2 to 3 inch), the chain tension
is correct (
Figure 31 ).
•
If the gap is smaller that 51 mm (2 inch), the chain
tension too tight; refer to Decreasing the Chain
Tension (page 19) .
•
If the gap is larger that 76 mm (3 inch), the chain
tension too loose; refer to Increasing the Chain
Tension (page 20) .
Note:
The chain tension has a significant affect on
the productivity of the machine; set the chain tension
as loose as possible.
Decreasing the Chain Tension
WARNING
If you remove the grease fitting from the boom
before you release the pressure in the system,
personal injury may result.
Before removing the grease fitting, loosen (but do
not remove) the plug on the opposite side of the
boom.
1. At the left side of the boom, loosen the 4 bolts that
secure the lock bars and the side plates (
Figure 32 ).
Figure 32
1. Bolt 3. Side plate
2. Lock bars
2. Locate the bleed plug (hex-socket) at the side plate on
the right side of the boom (
Figure 33 ).
Figure 33
1. Bleed plug
3. Slowly rotate the bleed plug counterclockwise 2 or 3
revolutions, and allow the grease to flow from around
the plug (
Figure 33 ).
Note:
The chain tension will decrease as the gap
between the chain and the wear strip increases.
4. When you achieve a 51 to 76 mm (2 to 3 inch) gap
between the chain and the wear strip, tighten the plug
(
Figure 32 and Figure 33 ).
5. Torque the 4 bolts ( Figure 32 ) that secure the lock bars
and the side plates to 190 to 215 N-m (140 to 159 ft-lb).
6. Perform the steps in Checking the Chain Tension (page
18) .
19