5-20
MAINTENANCE
DAILY INSPECTION (EVERY 10 HOURS)
Pressurizing the hydraulic oil tank
(If not equipped with the air breather)
1. Start the engine and run it at low speed.
2. With the vent plug (2) removed, set the
safety lock levers to the released position.
· Hydraulic oil tank pressurization posture
3. Fully extend the bucket, arm, boom, swing
and span cylinders.
4. Stop the engine and raise the left safety
lock lever to engage the lock.
5. Tighten the vent plug (2), and then
pressurize by retracting the cylinders.