Allied H6G, Service Manual

Page: 56 / 112

Service
3 - 6
Figure 3-5 Hydraulic System Pressure Tests
TEST ITEM CHECK PORT TEST EQUIPMENT
REQUIRED CONTROL
POSITION PRESSURE CORRECTIVE AC-
TION
Pilot Supply Tractor Pilot
Test Port 1000 psi (6895 kPa)
gauge Tractor blade
over relief 650 psi (4482
kPa) Adjust tractor pilot
reducing valve.
See tractor service
manual.
Counter-bal-
ance Valve Motor Port B 5000 psi (34,474
kPa) LINE-OUT
(Inching)
700-1000 psi Adjust counterbal-
ance valve.
Motor Supply Motor Ports A
& B 5000 psi (34,474
kPa) LINE-IN/OUT
with brake
pressure port
blocked.
3500 psi (24,132
kPa) Adjust Load Sense
Relief Valve.
Brake BR: Brake 1000 psi (6895 kPa)
gauge LINE-IN 275-650 psi 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 Set-
ting Procedure)
BR = 275-650 psi;
RI: 140-160 psi Adjust brake valve.
FREESPOOL FS:
FREESPOOL
BR: Brake
HS:
HI-SPEED
DV: Pilot, lube,
& load sense
1000 psi (6895 kPa)
gauge FREESPOOL 275-650 psi Check plumbing for
leakage. Check DV
lube orifi ce. Check
respective solenoid
valves.
HI-SPEED HS: HI-SPEED 1000 psi (6895 kPa)
gauge HI-SPEED 275-650 psi Check HI-SPEED
spool in motor.
Check solenoid
valve.
LINE-IN RI: LINE-IN 1000 psi (6895 kPa)
gauge LINE-IN 275-650 psi Check control lever.
LINE-OUT RO: LINE-OUT 1000 psi (6895 kPa)
gauge LINE-OUT 275-650 psi Check control lever.