Service
3 - 6
Figure 3-5 Hydraulic System Pressure Tests
TEST ITEM
CHECK PORT
TEST EQUIPMENT
REQUIRED
CONTROL
POSITION
PRESSURE
CORRECTIVE
ACTION
Pilot Supply
Tractor Pilot
Test Port
1000 psi (6895 kPa)
gauge
Tractor blade
over relief
See Figure 3-6
below for details.
Adjust tractor pilot
reducing valve.
See tractor Service
Manual.
Counter-
balance Valve
Motor Port B
5000 psi (34,474
kPa)
LINE-OUT
700-1000 psi
(4827 kPa - 6895
kPa)
Adjust
Counterbalance
Valve.
Motor Supply
Motor Ports A
& B
5000 psi (34,474
kPa)
LINE-IN/OUT
with brake
pressure port
blocked.
See Figure 3-6
below for details.
Adjust Load Sense
Relief Valve.
Brake
BR: Brake
1000 psi (6895 kPa)
gauge
LINE-IN
See Figure 3-6
below for details.
Check plumbing
for leakage. Check
brake for leakage.
Brake Valve
BR: Brake
RI:
LINE-IN
1000 psi (6895 kPa)
gauge
LINE-IN
(see Brake
Valve Setting
Procedure)
See Figure 3-6
below for details.
Adjust Brake Valve.
FREESPOOL
FS:
FREESPOOL
BO:
BRAKE-
OFF
1000 psi (6895 kPa)
gauge
FREESPOOL
See Figure 3-6
below for details.
Check plumbing
for leakage. Check
respective solenoid
valves.
BRAKE-OFF
BO:
BRAKE-
OFF
1000 psi (6895 kPa)
gauge
BRAKE-OFF
See Figure 3-6
below for details.
Check plumbing
for leakage. Check
solenoid valve.
LINE-IN
RI:
LINE-IN
1000 psi (6895 kPa)
gauge
LINE-IN
See Figure 3-6
below for details.
Check handlever.
LINE-OUT
RO:
LINE-OUT
1000 psi (6895 kPa)
gauge
LINE-OUT
See Figure 3-6
below for details.
Check handlever.
TRACTOR CODE
Option Motor Supply Pressure (S) psi
RI start (psi)
Tractor Pilot (P) psi
C71
CAT D6T
T
2800
140-150
420-500
C81/811
CAT D6N
T
3600
120-140
420-500
E460
JD 750/850J/K
H
3500
140-160
300-650
E460
JD 750/850J/K
T
3500
140-160
300-650
K49
Kom D65-16/17
T
4050
130-150
500-580
K471
Kom D61-23
T
3974
130-150
370-400
K471
Kom D61-23
H
5555
80-100
370-400
L41
Liebherr PR724
T
2900
130-150
290-350
L41
Liebherr PR724
H
4061
130-150
360-420
R40
CNH 1650L
T
2870
120-140
420-450
R42
CNH 1650M/2050M
T
3000/3625
64-84
420-450
Figure 3-6 Hydraulic System Pressure Values
Hydraulic System Pressure Tests
Содержание H6H
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