TROUBLESHOOTING
81
BRAKE
HYDRAULIC SYSTEM
STEERING SYSTEM
ELECTRICAL SYSTEM
HYDROSTATIC TRANSMISSION
Problem
Possible Cause
Remedy
Brake do not work well or not balanced
Too much free play of pedal
Worn or seized lining
Adjust free play
Consult your dealer.
Brake pedal do not return
smoothly
Broken return springs
Poor lubrication
Replace broken spring.
Remove rust, then lubricate.
Problem
Possible Cause
Remedy
Insufficient oil pressure
Leaking piping
With control lever in
RAISE position, relief valve blows
Three-point hitch does not
lower
Low engine speed
Low transmission oil
Intake piping is sucking air
Clogged oil filters
Defective hydraulic oil pump
Defective control valve
Broken cylinder
Loose joints
Cracked pipes
Poorly adjusted rod on position
control lever
Locked lowering speed control knob
Defective control valve
Broken cylinder
Seized lift shaft bearing
Increase speed.
Fill to specific level
Retighten clamps or replace cracked pipes
and defective O-rings.
Clean or replace.
Consult your dealer.
Consult your dealer.
Consult your dealer.
Retighten.
Replace pipes, O-rings.
Correct rod adjustment.
Turn counterclockwise to LOWERING position.
Consult your dealer.
Consult your dealer.
Consult your dealer.
Problem
Possible Cause
Remedy
Steering wheel is hard to
turn or turns in one direction
Steering wheel has too much free-play
Poorly installed steering column
Air in steering hydraulic system
Improper toe-in
Different front tire inflation
Loose steering or ball joints
Defective steering unit, pump
Worn steering column
Loose ball joints
Defective steering unit
Correct.
Air-bleed steering system.
Correct.
Inflate both tires to same specified pressure.
Retighten or replace defective parts.
Consult your dealer.
Consult your dealer.
Retighten.
Consult your dealer.
Problem
Possible Cause
Remedy
Battery cannot be charged
Head lamps are dim
Particular function will not operate
Blown fuse
Blown fusible link, defective wiring
Loose or damaged fan belt
Defective battery
Defective alternator
Defective regulator
Worn steering column
Loose ball joints
Burnt bulb (as applicable)
Blown fuse
Poor contact
Defective switch
Check fuse and replace.
Check wiring and replace link.
Correct loose, dirty terminals, short circuit,
poor ground, etc.
Give belt proper tension or replace.
Correct loose terminal connection, corrosion.
Consult your dealer.
Consult your dealer.
Charge battery, check charging system.
Check ground points and terminals, clean if
necessary.
Replace.
Check fuse and replace.
Inspect ground points and terminals, clean if
necessary.
Replace as required.
Problem
Possible Cause
Remedy
Tractor does not move
Tractor creeps without hydro pedals
being operated
Parking brake applied
Too low engine rpm
Low transmission oil level
Air trapped in system
Improper adjusted hydro pedals
Clogged hydraulic filter
Clogged suction filter
Defective hydrostatic unit
Stuck neutral arm
Incorrect neutral adjustment
Defective hydrostatic unit
Release.
Accelerate engine.
Fill to upper level
Consult your dealer.
Consult your dealer.
Replace.
Replace.
Consult your dealer.
Consult your dealer.
Consult your dealer.
Consult your dealer.
Summary of Contents for TH4260
Page 72: ...TH4330 4290 4260 72 FIG 6 34 3 FIG 6 34 4 ...
Page 91: ...ISEKI TRACTOR 91 ...
Page 92: ...TH4330 4290 4260 92 ...
Page 93: ...WIRING DIAGRAM WIRING DIAGRAM WIRING DIAGRAM TH4260F ...
Page 94: ...WIRING DIAGRAM TH4260FH ...
Page 95: ...WIRING DIAGRAM TH4290F ...
Page 96: ...TH4330 4290 4260 WIRING DIAGRAM TH4290FH 4330FH ...