Hitachi ZW 550-6 Operator's Manual page 304

7. Two points to right steering cylinder pins (10 and 11).
--- every 250 hours
Cylinder right front (10)
Cylinder right rear (11)
8. Two points to left steering cylinder rod pins (12 and
13).
--- every 250 hours
Cylinder left front (12)
Cylinder left rear (13)
MAINTENANCE
11,13
7-20
12
10
MNHE-07-010