Machine Structure - Yanmar SV26 User Operation And Maintenance Manual

16 Detecting anomalies

16.2.3 Machine structure

Problem Cause
The power or Lack of pressure due to wear on the
speed of the hydraulic pump.
moving parts is
Pressure drop in the distributor be-
low.
low the set value.
Damaged hydraulic cylinder.
Insufficient quantity of hydraulic
oil.
Clogged filter.
The upper part The rotation brake is not unlocked.
does not rotate or
Insufficient quantity of grease.
does not rotate
smoothly.
Defective rotation brake valve.
Defective rotation motor.
The hydraulic oil Insufficient quantity of hydraulic
temperature is oil.
too high.
Overload
The machine Track incorrectly tightened or for-
does not move eign body jammed.
forward in a
Damaged hydraulic motor.
straight line.
Defective hydraulic pump.
Defective safety valve.
Sprocket, tightening roller or tracker
roller damaged.
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Solution
(Replace the hydraulic pump).
(Check and repair the valves).
(Check and repair).
Fill the hydraulic oil to the required
level.
Clean or replace the filter.
Unlock the rotation locking lever.
Check and lubricate.
(Check and repair).
(Check and repair).
Fill the hydraulic oil to the required
level.
Reduce the load.
Adjust or clean.
(Check and repair).
(Check and repair).
(Check and repair).
(Check and repair).