Yanmar YM2000 - Page 15

4) Abnormal noises from the pump or control valve.
Remedy
Replace
Replace
Readjust
Clean
Replace
Check the water leakage into the hydraulic
line
Item
Hydraulic pump
Feed back arm
Others
Cause
1, Moving portion of shaft is worn
2. Shaft is bent
Rod distance is insufficient
1. Strainer is clogged
2. Viscosity of fluid is too high
3. Water is mixed in with the hydraulic fluid