Hitachi ZW180 Operator's Manual page 224

8. One point each to rear right and left steering cylinder
--- every 500 hours (250 hours at first time only)
Left front (12)
Right front (13)
9. One point each to upper and lower frame center hinge
--- every 1000 hours
Upper (14)
Lower (15)
MAINTENANCE
pins (13 and 12)
pins (14 and 15)
7-24
12, 13
M4GB-07-008
14
M4GB-07-009
15
M4GB-07-010