504G3 SERIES TRACTOR OPERATION MANUAL
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7.4 Braking system
Troubles & possible causes Fixing methods
(1) Brake fails
① The brake disk is worn seriously, or worn
eccentrically.
② Free path of brake pedal is too large
① Put air out of pipe
② Readjust
(2) Tractor steer wander during braking
① The left and right brake pedals’ free
pathes are different
② The brake disk is damaged in one side
③ Air pressures in the two rear tires are
different
① Adjust
② Replace
③ Check up and air up the tires as
per regulation
(3) The tractor is shivering at starting
① The brake pedals’ free pathes is too small
② Return spring’s pressure is too small
① Adjust
② Replace
(4) The brake cannot be separated completely
and resulting in heat
① Grip brake still under operational
② The brake pedals’ free pathes is too small
① Loosen the grip brake
② Adjust
7.5 Front driven axle (4WD)
Troubles & possible causes Fixing methods
(1) The front tires are worn seriously
① The front wheel rim or supporter
deformed seriously
② The front wheel toe-in adjust improperly
③ The steering knuckle and two pins of oil
cylinder are worn seriously
④ The air pressure is insufficient and the
front axle is engaged when transporting
① Correct them
② Adjust tor-in
③ Replace pintles
④ Checkup and air up and
disconnect
(2) The front wheels are swaying
① Bearing of front driven axle is abraded
heavily
② Bearing of steering knuckle is abraded
heavily
③ Clearance of front and rear supporting
seat is too large
④ The front wheel rim deformed seriously
⑤ The front wheel toe-in adjust improperly
① Replace
② Replace
③ Adjust
④ Correct
⑤ Adjust
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