9-4
Trouble symptom
Trouble symptom
3. Low output power
3. Low output power
1) Torque converter
2) Transmission
·
Insufficient hydraulic pressure :
-
Low oil level.
-
Air sucked in.
-
Oil filter clogging.
-
Oil pump worn.
(Low delivery flow)
-
Regulator valve coil spring fatigu-
ed.
-
Control valve spool malfunctioning.
-
Piston or O-ring worn.
·
Stator free wheel cam damaged.
·
Flexile plate deformed
·
Stator free wheel seizing.
·
Impeller damaged for interfering with
the surroundings.
·
Use of poor quality of oil or arising of
air bubbles.
-
Air sucked in from inlet side.
-
Low torque converter oil pressure
accelerates generation of air beb-
bles.
-
Oil mixing with water.
-
Inching rod out of adjustment.
·
Clutch slipping
-
Lowering of weight.
-
Piston ring or O-ring worn.
-
Clutch piston damaged.
-
Clutch plate seizing or dragging.
-
Check oil level and add oil
-
Check joints and pipes.
If necessary, retighten joint or replace
packing.
-
Check and replace
-
Check oil pressure. If necessary rep-
lace pump.
-
Check spring tension. If necessary,
replace.
-
Disassemble, check and repair or re-
place.
-
Disassemble, check measure and re-
place.
-
Check stalling speed.
(Increased engine load will cause ex-
cessive drop of stalling speed.)
-
Check oil temperature rise.
If any, replace free wheel.
·
Replace flexible plate
-
Check temperature plate.
(No-load will cause temperature rise)
-
Replace free wheel if a drop of start-
ing output is found.
-
Check drained oil for foreign matter.
If any, change oil.
-
Check and change oil.
-
Check joints and pipes.
If necessary, retighten joint or replace
packing.
-
Check oil pressure.
-
Check drained oil and change oil.
-
Check and adjust.
-
Check oil pressure.
-
Disassemble, check, measure and
replace.
-
Disassemble, check and replace.
-
Check to see whether or not machine
moves even when transmission is in
neutral position. If so, replace.
Probable cause
Probable cause
Remedy
Remedy
