Takeuchi TB53FR - Hydraulic Breaker

HYDRAULIC UNITS
SOLENOID VALVE
IV-64TB53FR
• Replace
• Replace
• Overhaul and repair or replace.
• Overhaul and repair or replace.
• Overhaul and repair or replace.
• Overhaul and repair or replace.
INSPECTION AND ADJUSTMENT
Checking the Parts
Parts
• Replace
• Replace
TROUBLESHOOTING
Symptom
Solenoid valve does not
operate.
• Wiring short-circuit or wire break
• Solenoid coil short-circuit or wire break
• Catching of foreign matter by the spool
• Damage on the outer circumference of the spool
• Catching of foreign matter by the plunger
• Damage on the outer circumference of the plunger
Solenoid coil • When the solenoid is burned, short-circuited, or has a wire
break
• Wiring short-circuit or wire break
Judgment Criteria Treatment
• Scratches, rust, or corrosion at the sliding parts with the spool
• Scratches, rust, or corrosion of the seal part in contact with the
O-ring
• Other damage considered to impair the normal functions
• Damage on the outer circumference which catches a fingernail
• No smooth movement
• Rust, corrosion, deformation, breakage, or other notable dam-
age

Body
Spool, plunger
Spring
O-Ring
• Replace
• Replace
• Replace
• Replace
• Adjust or replace
• Replace
• Replace
Probable Causes Remedy
• Replace
• Replace
• Damaged O-ring
• Damaged O-ring at the emergency manual but-
ton of the solenoid valve
Oil leakage from solenoid
valve, cover, or relief
valve to the outside.
Pressure does not rise. • Catching of foreign matter by the relief valve • Clean or replace.