Maintenance
SY50U Excavator OMM
5-62
Operation and Maintenance Manual — 0120
SANY
Arm Cylinder Base End Pin
Fig. 5-56
0003173
1
2
1. Remove the grease fitting cap (1) from the arm cylin-
der base end pin grease fitting (2).
2. Grease the arm cylinder base end pin grease fitting.
NOTE:
Wipe excess grease from around the grease
fitting.
3. Install the grease fitting cap.
Boom Pin
Fig. 5-57
0003174
2
1
1. Remove the grease fitting cap (1) from the boom pin
grease fitting (2).
2. Grease the boom pin grease fitting.
NOTE:
Wipe excess grease from around the grease
fitting.
3. Install the grease fitting cap.
Swing Bearing
Fig. 5-58
0003175
1
1. Grease the two fittings on the swing bearing (1).
NOTE:
Only one fitting is shown. The fittings are
180° offset from each other.
2. Start the engine and raise the bucket 0.8 in.–1.2 in.
(20 mm–30 mm) above the ground. Swing the upper
structure 45 degrees (1/8 turn) in each direction.
3. Shut down the engine.
4. Repeat steps 1 through 3 until grease appears from the
swing bearing seal.
NOTE:
Wipe excess grease from around the grease fittings.
