Service Manual

Adjust, Lubricate Lubricate
Fill to
use Clean or or
proper
tachometer repair repair
level
Check charge Inspect
Ok
Ok
pump
inlet
pressure/flow filter
Low Loose or clogged
Inspect
Inspect lift
Ok Ok Ok Ok Ok
engine
Check
Inspect
Check
lift arm
rpm
valve control
underside of
hydraulic
pivots
linkage
cutting unit
oil level
Binding, broken
Low
Excess debris Low
or out of adjustment
Binding
Repair or replace
transmission
Ok
Inspect
charge
Ok
Inspect
implement
Ok
Test
steering
Tighten
or
(pump & motor) pump relief valve valve
replace
Control valve
Defective Defective sticking
Repair Repair or shim Repair or replace
charge implement steering
pump relief valve valve
Ok
Test lift
Ok
Inspect
cylinders lift valve
for internal
leakage
Defective
Defective
Cutting Unit Will Not Lift or Lifts Slowly
Replace Repair
hydraulic lift valve
cylinder
Groundsmaster
®
300 Series Page 5 - 15 Troubleshooting