OPERATOR'S MANUAL MAINTENANCE

Section E - Hydraulics
Service Procedures
Auxiliary Relief Valves
E-226 E-226
9803/9880-3
Auxiliary Relief Valves
TE-014_2
General
1 Prepare the machine
a Operate the dipper out and lower the boom to set
the bucket on the ground.
C030150-1
Fig 9.
b Make the machine safe, refer to Section E,
Service Procedures.
2 Increase MRV Pressure, refer to Section E, Service
Procedures.
3 Test the ARVs with the engine at idle using the
appropriate test points.
4 Restore Original MRV Pressure, refer to Section E,
Service Procedures.