Eaton TRTS4400, Troubleshooting Manual

Page: 17 / 46

15
Component Test Procedures
Component T
e
st
P
rocedur
es
Shifting low
range / low-low
is slow or
doesn’t work Exhaust valve • Assemble the manometer
in the output at the
exhaust valve.
• Measure the output pres-
sure.
• On neutral
minimum of
7,5 bar
• In any shift
position 0 bar
• If it correct the
exhaust valve is OK
• Check range valve
(next item).
• If it is not correct.
• Disassemble the
exhaust valve and
check if the spring is
in the correct posi-
tion, according to the
picture (end of this
section).
• If not, correct the
spring.
• If the assembly is cor-
rect and the measures
are out of specifica-
tion, replace the
exhaust valve.
Range valve • If everything is OK during
air filter and exhaust valve
tests.
• Disassemble the range
valve and inject air at 8
bar in the low / high hole
(see picture in the end of
this section).
If low and high
range work cor-
rectly. Replace the range valve
If low and high
range doesn't work
correctly. Check the transmission
(next item)
Insert valve
(Emboloplunger) Remove the air supply SP -
low-low (see picture in the end
of this section) and select low-
low at the knob (be sure to fas-
ten the hose to avoid acci-
dents) There is air supply None. Go to next step.
There isn't air sup-
ply Check if the air supply is
correctly assembled or if
there is leakage at the
hoses.
Connect the air supply SP Correct low-low
shift None
Remover the filter regulator
and inject 8 bar in the low-low
holes (see picture in the end of
this section Incorrect low-low
shift Remove the insert valve
and check if there is water
or other contamination,
clean the parts and replace
the insert valve
Transmission Disassemble and check gen-
eral condition of the following
components: cylinders, pis-
tons, o'rings and gaskets. Humidity, rust,
wearing, contami-
nation or damaged
o'rings. Replace damaged compo-
nents.
SYMPTOM COMPONENT PROCEDURE OUTPUT ACTION