jcb Mini CX - Page 230

Section E - Hydraulics
Problem Solving
Hydrostatic Transmission
E-60 E-60
9803-9340-8
7 Pump neutral position set incorrectly Adjust neutral position. K Transmission
Pump Neutral
Adjustment -
Series 1
Machines ( T E-62)
8 High pressure relief valve faulty Check high pressure relief valve. Clean or
replace valve if faulty.
K Pump Pressure
Test Points - Series
1
Machines ( T E-65)
or K Pump
Pressure Test
Points - Series 2
Machines ( T E-66)
9 Feed hose failure Check motor feed hoses.
10 Motor seal leakage Check motor case drain for confirmation of seal
leakage. Check for shaft seal leakage.
K Checking Motor
Leakage Rate
(2WD) ( T E-64)
11 Motor failure Inspect motor for damage. Repair as required. K Drive
Motors ( T E-99)
12 Pump/engine drive coupling failure Check coupling K Pump/Engine
Coupling ( T E-94)
13 Oil temperature switch faulty Replace switch
14 Restriction in oil cooler Carry out flow check. Check for damage to
hoses and pipework. replace oil cooler.
15 Shuttle valve in motor defective (2WD only) Inspect motor and repair as required. K Drive
Motors ( T E-99)
16 DA valve set incorrectly or faulty Check and reset DA valve.
17 Inching pedal lever is ON or set incorrectly Check pedal and adjust if necessary.
18 No electrical supply to direction solenoids Check electrical circuit.
19 Low or no oil pressure in swash control
piston
Check pressure at test points X1 and X2.
20 Faulty pump Check pump.
KEY TO CAUSE REMEDY PAGE REF.