Žingsnio reduktorius KYB MAG-18VP-350F mini ekskavatoriaus Yanmar VIO30-2 VIO35-2 VIO35-5 VIO35-5B

TECHNICAL DATA SHEET: YANMAR ViO30 / ViO35 SERIES FINAL DRIVE

1. GENERAL IDENTIFICATION

Machine Models: * Yanmar ViO30-2

Yanmar ViO35-2, ViO35-3, ViO35-5, ViO35-5B

OEM Manufacturer: Nabtesco / Teijin Seiki (Japan)

OEM Model Series: MAG-18VP-350F / MAG-18VP-350F-4

Yanmar Part Numbers: * 172458-73700 / 172458-73701 (ViO35-2/3)

172A46-73510 / 172A46-73300 (ViO35-5/5B)

2. PERFORMANCE SPECIFICATIONS

Motor Type: Two-speed Axial Piston Motor with integrated swashplate control.

Reduction Type: 2-Stage Planetary Gear Reduction.

Max Operating Pressure: 24.5 MPa (3,553 PSI).

Parking Brake: Integrated multi-disc, spring-applied, hydraulic-release.

Shift Signal: Pilot pressure operated for High/Low speed transition.

3. MECHANICAL INTERFACE (INSTALLATION DATA)

Sprocket Mounting: Typically 9-bolt or 10-bolt pattern.

Note: Always verify the Pitch Circle Diameter (PCD) of your sprocket before ordering a replacement.

Frame Mounting: Standard 3-ton class circular flange.

Hydraulic Porting:

A & B Ports: High-pressure travel lines (typically G 1/2" or M18/M22).

Dr (Drain): Case drain line (1/4" or M12). Crucial for motor life.

2-Speed (P): Pilot port for high-speed tracking.

4. INTERNAL REPAIR COMPONENTS
If you are repairing the unit, focus on these primary wear components:

Floating Seal (Duo-Cone): The most common failure point. Keeps gear oil in and mud out.

Main Hub Bearings: Large angular contact bearings.

Rotary Group: Cylinder block, 9 pistons, valve plate, and center pin.

Planetary Gears: 1st stage sun gear and 2nd stage planet gears.

5. MAINTENANCE PROTOCOL

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

Oil Capacity: Approx. 0.6 – 0.8 Liters.

First Change: After 250 hours (for a new or rebuilt unit).

Standard Change: Every 1,000 hours thereafter.

Critical Check: Ensure the oil level is checked with the "Level" plug at the horizontal (3 or 9 o'clock) position.