Doosan 7/20, Руководство по эксплуатации и обслуживанию

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34 MAINTENANCE
7/20, P65
DRIVE BELT REPLACEMENT / ADJUSTMENT
Remove drive belt guard.
Loosen securing screw M12 beside and above the Airend.
Loosen main pivot bolt M16.
Disconnect adjusting screw and pivot Airend towards engine to slacken
belt and remove belt from pulleys.
Fit new belt over pulleys, pivot Airend away from engine and reengage
adjusting screw.
Adjust drive belt tightening by means of adjusting screw with M8 head
socket screw.
Adjustment values:
New drive belt
144-151 Hz (34N-37N/2.9mm)
Run in drive belt
120-129 Hz (24N-27N/2.9mm)
Tighten securing screw M12 beside and above the Airend.
Tighten main pivot bolt M16 and secure by lock nut.
Check belt adjustment.
Install drive belt guard.
1. Main pivot bolt.
2. Securing screw.
3. Adjusting screw.
4. Airend
WARNING: DURING THE ADJUSTMENT / REPLACEMENT
PROCEDURE ALWAYS DISCONNECT BATTERY.