Braking System - Komatsu WB93S-5 F50003 Operation & Maintenance Manual

3.15.4.3 BRAKING SYSTEM

TROUBLE
Braking not regular for both wheels:
Braking not regular on one side only:
3.15.4.4 CONVERTER
TROUBLE
Low pressure in the clutch:
Pump delivery insufficient:
Overheating:
Noisy converter:
Lack of power:
3.15.4.5 ENGINE
TROUBLE
Oil pressure warning light remains on
even with engine at high speed:
164
CAUSE
• Brake discs worn.
• No oil in brake pump.
• Air in braking circuit.
• Air in braking circuit.
• Brake disc worn.
CAUSE
• Oil level too low.
• Clutch pressure adjusting valve
locked open.
• Faulty delivery pump.
• Clutch shaft or piston rings.
• Leakages due to clutch piston pump
locked open.
• Oil level too low.
• Suction filter clogged.
• Faulty pump.
• Damaged rings.
• Faulty pump.
• Oil level too low.
• Dirty heat exchanger.
• Damaged heat exchanger.
• Faulty pump.
• Damaged bearings.
• Low engine rpm causes stall speed.
• Defect as if due to overheating.
CAUSE
• Oil level in oil pan too lo.
• Oil filter clogged.
• Oil unsuitable for the season.
REMEDY
(•) Change.
(•) Top up and bleed circuit.
(•) Bleed circuit.
(•) Bleed circuit.
(•) Change.
REMEDY
• Top up.
(•) Clean element and seat.
(•) Change.
(•) Change rings.
(•) Clean valve carefully.
• Top up.
• Clean filter.
(•) Change.
(•) Remove, disassemble and
reassemble the unit.
(•) Change.
• Top up.
• Clean.
• Change.
(•) Change.
(•) Remove and change.
(•) Check and set up engine governor.
• See remedies in case of
overheating.
REMEDY
• Top up.
• Change filter.
• Change.