SK30SR SK35SR KX121-3 TM09 19010-22100 KYB TM09 Hydraulic Travel Motor Repair Kit Compatible with Kobelco Kubota Yanmar Bob-cat

1. Product Overview & Wholesale Price Range

The KYB TM09 Hydraulic Travel Motor Repair Kit (OEM Part # 19010-22100 / RD511-61100 / TM09 / TM09VD) contains a complete precision rotary group overhaul set including cylinder block, piston shoes with bronze slippers, distributor valve plate, retainer plate, ball guide, swashplate, friction discs, and drive shaft engineered for 3-to-5-ton mini excavators undergoing final drive travel motor rebuilds.

• Factory Wholesale Price: $350 – $820 USD (Direct manufacturer pricing — Save up to 50% vs regional dealer markups)
• Included Spare Parts: Cylinder Block (1pc) + Piston Shoes (9pcs) + Valve Plate (1pc) + Retainer Plate (1pc) + Ball Guide (1pc) + Swash Plate (1pc) + Friction Discs + Drive Shaft (1pc)
• MOQ & Bulk Discount: 1 Set (Tiered wholesale discounts available for hydraulic repair shop batch orders)
• Lead Time: 1–3 business days (Large factory stock ready for immediate dispatch)
• Warranty: 12 Months full replacement warranty with high-lead bimetallic bronze durability guarantee

2. Application Worksite Checklist (施工场景清单)

Precision-ground components engineered to deliver high traction torque and straight-line tracking under tough field conditions:

• Urban Utility Trenching & Cable Laying: Restores straight-line tracking and fine creep control during ditch digging with Kobelco SK30SR excavators.
• Residential Foundation & Basement Digging: High torque output ensures easy climbing and steering on steep slopes for Kubota KX121-3 excavators.
• Landscaping & Farm Maintenance: Thermal-resistant bimetallic plates prevent travel speed drop during continuous long-distance tracking on Yanmar Vio35 machines.
• Demolition & Small Hammer Operations: High-tensile forged piston shoes absorb heavy travel shock loads over concrete rubble.

3. Travel Motor Overhaul & Fault Diagnostic Guide (行走马达常见故障排查)

If your 3–5 ton mini excavator final drive travel motor is experiencing movement failure, check the diagnostic symptoms below:

• Fault 1: Machine Off-Tracking or One-Sided Slow Travel (单边行走跑偏/发慢)
  Root Cause: Excessive wear on one side's travel motor valve plate or cylinder block face causing internal high-pressure oil bypass.
  Solution: Replace with our precision lapped TM09 cylinder block and valve plate kit (OEM 19010-22100) to equalize left and right travel speed.
• Fault 2: Travel Motor Lacks Traction Power & Fails to Climb Slopes (无力/爬坡停轨)
  Root Cause: Friction galling on piston slipper bronze shoes or worn parking brake friction plates.
  Solution: Install a complete TM09 rotary group overhaul kit including new piston shoes and friction steel plates.
• Fault 3: Black Copper Debris Found in Final Drive Gearbox Oil (减速机油箱有黑粉铜屑)
  Root Cause: High-temperature friction melting of the bronze layer on the travel motor piston slippers.
  Solution: Flush final drive hydraulic lines, clean gear casing, and rebuild motor with high-copper alloy TM09 pistons.
• Fault 4: Abnormal Knocking Noise & Track Chattering During Travel (行走抖动异响)
  Root Cause: Broken ball guide spring or pitted swashplate contact surface.
  Solution: Replace ball guide, retainer plate, and swashplate assembly to eliminate track movement chatter.

4. Hot Machinery Replacement Parts Recommendation (5大品类热门推荐表)

Explore our factory-direct replacement hydraulic components compatible with major global excavator brands:

5. Frequently Asked Questions & Technical Support (QA 问答专区)

Q1: How do I verify if this TM09 repair kit fits my Kobelco SK30SR or Kubota KX121-3 travel motor?
A: Check your original travel motor nameplate for OEM part numbers 19010-22100, RD511-61100, or TM09 / TM09VD stamp. You can also send us photos of your old cylinder block and pistons for instant verification.

Q2: My Kubota KX121-3 excavator tracks off to one side. Will replacing the TM09 rotary group solve it?
A: Yes, off-tracking is caused by pressure leakage in the worn cylinder block face on the slower side. Installing our precision-lapped TM09 repair kit restores equal travel power to both tracks.

Q3: Is this KYB TM09 travel motor kit a complete overhaul solution for final drives?
A: Yes, it includes all primary internal wear components (cylinder block, 9 pistons, valve plate, retainer plate, ball guide, swashplate, friction discs, and drive shaft) required for a complete motor rebuild.