I N I T I A L U PS TA R T
24
SuperSaw 551
en011106b_ss551.FM
Adjusting chain tension pressure
1.
Lower the grapple saw to the ground and shut off the
engine.
2.
Connect a suitable pressure gauge to the pressure test
point (1).
Note!
Place the pressure gauge so that the pressure
easily can be checked from the operator’s cabin.
Caution!
Never adjust any hydraulic pressures without using a
pressure gauge.
3.
Start the engine and read the feed out presure when
the saw function is activated.
4.
Adjust the chain tension pressure on the pressure
regulating valve (2).
•
Increase the pressure by tightening the set
screw.
•
Decrease the pressure by loosening the set
screw.
For a proper pressure range, refer to Technical Data.
Bleeding the chain tension system
1.
Lower the grapple saw to the ground and shut off the
engine.
2.
Open the bleeder valve (1) 1 - 2 turns with i.e a screw
driver.
3.
Push in the bar holder (2) completely and close the
bleeder valve (1) with the bar holder in the inner
position.
4.
Start the engine and activate the saw function 4-5
times.
5.
Repeat step 1-3.
6.
Repeat this process after 30-60 minutes of operation.
Caution!
Always bleed the system if there is any suspicion of
air having entered the system, e.g. after replacing a
hose or other component.
ill. 18
Adjusting chain tension pressure
1
Pressure test point
2
Pressure regulating valve
1
2
ill. 19
Bleeding the chain tension system
1
Bleeder valve
2
Bar holder
1
2
