BFISDoBF20D
Faulty
Power
Tilt
Assembly
Quick Reference
Chart
Pressure
SYm
Does not
tilt down.
tom
Does not hold
Check point
See
page
2-6
Lower chamber
blow pressure
low or drops
Upper chamber
blow pressure
low or drops
Checkhepair method
2ontractec
side
Extendec
side
@
Motor
Check the motor
Check the manual valve for tight-
ening, damage or foreign materi-
al.
Check the O-ring for damage,
replace if necessary.
Replace the manual valve
if
nec-
essary.
Check the O-ring and backup ring
for damage, replace if necessary.
Replace the piston rod assembly
if
necessary.
Check the O-ring, dust seal for
damage, replace if necessary.
0
0
0
0
0
0
-
0
-
0
0
Manual valve
-
@
Free piton,
O-ring, back-
0 0
up ring
0
@
Piston rod,
O-ring, dust
seal
@
Oil
(ATF)
0
0
0
0
0
Check the oil level and add if
necessary
0
0
0
@
Upper cham-
ber check
valve
Check the check valve for dam-
age, wear or foreign material.
Clean and reassemble the spool
valve properly.
Check the valve for damage,
wear or foreign material.
Clean and reassemble the spool
valve properly.
Do
not disassemble the spool
valve, either as the upper reliel
valve is built in the spool valve.
0
0 0
0 0
0
Spool valve
(with built-in
upper relief
valve)
0
0
0
@
Lower cham-
ber check
valve
Check the check valve for dam-
age, wear or foreign material.
Clean and reassemble the spool
valve properly.
0
0
0
Replace the gear pump assembly
Check the valve for damage.
wear or foreign material.
Clean and reassemble the spoo
valve properly.
@
Gear pump
@
Down relief
valve
0
0
0
@
Thermal
valve (in the
manual valve
Check the check valve for dam-
age, wear or foreign material.
Clean and reassemble the spoo
valve properly.
0
0
0
@
Shock relief
valve (in the
piston)
Check the relief valve for dam-
age, wear or foreign material.
0
0
2-5
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