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4
SLEW MOTOR
DISASSEMBLY AND ASSEMBLY
Reduction gears
Part Judgment criteria Treatment
Drive gear
Housing, inter
nal gear
• Gear teeth surfaces show pitting, peeling, etc.
• Excessive clearance with the motor joint due to wear of the
spline
•
Replace
• Replace
Planetary gear
• Gear teeth surfaces show pitting, peeling, etc.
• Needle rolling surfaces show flaking, peeling, etc.
• Replace
• Replace
Pinion
• Gear teeth surfaces show pitting, peeling, etc.
• Excessive clearance with the shaft due to wear of the spline
• Replace
• Replace
Needle bearing, planetary
shaft
• Needle and shaft rolling surfaces show flaking, peeling, etc.
• Needle and shaft rolling surfaces show indentations, etc.
• Bearing rotation is abnormal (abnormal noise, rotation not smooth,
etc.)
•
Replace
• Replace
• Replace
Carrier, shaft
• Clearance with planetary shaft is too large • Replace
Shaft
• Excessive clearance with the pinion due to wear of the spline • Replace
Thrust washer
• Excessive wear • Replace
Ball bearing, roller bearing
• Bearing rotation is abnormal (abnormal noise, rotation not smooth,
etc.)
•
Rolling surfaces show flaking, peeling, etc.
• Rolling surfaces show indentations, etc.
• Replace
• Replace
• Replace
Collar, oil seal, O-ring
• There are scratches that cause oil to leak • Replace
Brake valve
Adjusting the relief valve pressure
“2. Service data, Performance criteria”
Anti-rebound valve
Part Judgment criteria Treatment
Check valve
• Deep scratches on sliding surfaces or severe roughness
• Clearance with the body is too large
• Deep scratches on the valve seat or unevenly seated.
• Replace
• Replace
• Replace
Body
• Deep scratches on sliding surfaces or severe roughness
• There are scratches that cause oil to leak
• Replace
• Replace
Spring, sleeve
• Damaged or severely deformed • Replace
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