SAME SILVER 80 - Front PTO Fault Diagnosis; Specifications for Front PTO Springs

Diagnosing malfunctions
Spring specifications
piston return spring code no. 2.4019.373.1
wire diameter mm 6.5
external diameter mm 79.5
released spring mm 61.5
loaded spring - kg 75.7 (Nm 742) mm 30
- kg 79.7 (Nm 782) mm 28
hydraulic system valve springs code no. 2.4019.179.1
no. of springs used 2
wire diameter mm 1.2
external diameter mm 8.8
released spring mm 63
loaded spring - kg 3.6 (Nm 35) mm 44.6
- kg 4.6 (Nm 45) mm 39.5
clutch slipping
P.T.O. brake does not
apply
Verify activation of
the solenoid valve
check piston for
free stroke
verify movement of
piston
inspect clutch discs
for wear
Check the solenoid
operated control
valve
Check engage-
ment pressure
piston jammed
replace the sole-
noid valve if
necessary
replace the springs
of inefficient valves
inspect O-rings on
piston and manifold
remove any rough-
ness preventing
smooth action
replace discs
replace the sole-
noid valve if
necessary
inspect O-rings and
replace if necess-
ary
replace out-of-set-
ting valve springs
recheck pressure
replace the defec-
tive parts
replace the sole-
noid valves if
necessary
59
5
vehicle
front power take-off
292
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