1
5
SPANNER
TROUBLESHOOTING
5G8AX001SPANNER
Spanner
Spanner cylinder does not move or lacks force
1
Check
the operation of
actuators other than the
spanner cylinder
Normal
2
Check
the spool opera-
tion
Faulty
Repair
orr
eplace
thehousing
block
Normal
3 Check
thelinkage
Faulty
Adjust, r
epair or replace
Normal
4
Check
the supply pres-
sure of the control valve
Faulty
Repair
orr
eplace
thehousing
block
Normal
5 Check the swivel joint
Faulty
Repair
or replace the swivel
joint
Normal
Spanner cylinder is faulty
Repair
or replace the spanner
cylinder
Switching
between the blade cylinder operation and the
spannercylinderoperationcanbedonebyoperatingthe
lever
.
Ther
efore,
checkingpr
ocedure
forthespannercylin
-
der is similar to that for the blade cylinder.
“5.Troubleshooting,Dozerblade”
1.
C
heck
the operation of actuators other than the
spanner cylinder.
2.
C
heck the spool operation.
“5.Troubleshooting,Traveling,Rightorlefttravelis
impossible, 2. Check the spool operation”
3. Check the linkage.
“5.Troubleshooting,Traveling,Rightorlefttravelis
impossible,3.Checkthelinkage”
4. Check the supply pressure of the control valve.
Disconnect
one of the hoses connected to the control
valve
housingblock(spanner).Fitthepr
essure
gauge
tothehosejustdisconnected.Operatethelever(span
-
ner)
andcheckthesupplypr
essure
ofthevalve.
• If
the value indicatedisnot as below
,
the housing
block is faulty.
Supply
pr
essure:
20
.0MPa(2900PSI)