ناقل الحركة النهائي 172A69-73300 لـ حفارة Yanmar SV100-2B SV100-2A-2PB SV100-2A SV100-1A SV100-1

TECHNICAL DATA SHEET: YANMAR SV100 SERIES FINAL DRIVE
1. GENERAL IDENTIFICATION

Machine Models: Yanmar SV100, SV100-1, SV100-1A, SV100-2A, SV100-2A-2PB, SV100-2B

Yanmar Part Number: 172A69-73300 (Assy)

Core Component: Travel Motor (Piston type) + Planetary Gearbox (Reduction unit)

Common OEM Cross-Ref: Nachi PHV-120-102-1-8502A (Verify against your specific ID plate)

2. PERFORMANCE SPECIFICATIONS

Motor Type: Two-speed axial piston motor with integrated swashplate control.

Reduction Ratio: High-ratio 2-stage or 3-stage planetary reduction.

Braking: Spring-applied, hydraulic-release parking brake (Friction plate type).

Relief Settings: Standard 32.0 MPa (4,641 PSI).

3. MECHANICAL INTERFACE

Sprocket Mounting: Heavy-duty bolt pattern (typically 12 to 16 bolts for the 10-ton class).

Frame Mounting: Circular flange with precision-drilled mounting holes.

Hydraulic Porting:

A & B Ports: High-pressure main travel lines.

Dr (Drain): Case drain line (Must be clear of obstructions).

P (Pilot): 2nd speed shift signal port.

4. INTERNAL GEARBOX COMPONENTS
If you are repairing the gearbox section rather than replacing the whole unit, these are the primary wear items:

Sun Gears: Central drive gears for the 1st and 2nd stages.

Planetary Carriers: The cages holding the planet gears.

Floating Seal (Duo-Cone Seal): The critical seal that separates the gear oil from the outside environment.

Main Hub Bearings: Large-diameter bearings that support the weight of the machine and the tension of the tracks.

5. MAINTENANCE PROTOCOL

Gear Oil Grade: SAE 90 or 80W-90 (API GL-4 or GL-5).

Oil Volume: Approx. 1.8 – 2.2 Liters (Check level via the "Level" plug at the 3 o'clock or 9 o'clock position).

Change Interval: Every 500–1,000 hours (Initial change at 250 hours for new units).

Critical Warning: If you see hydraulic oil leaking from the gearbox "Level" plug, the motor shaft seal has failed, allowing high-pressure hydraulic oil to over-pressurize the gearbox.