Restore full operation to your Kubota KC70 dumper with factory-approved procedures. This 26-page OEM workshop edition (#97899-61870) details the hydraulic dump circuit, V-belt drives, crawler tracks, and transmission. The document features exploded-view diagrams of the sprocket, crawler bolt assembly, hydraulic cylinder, and transmission components, alongside electrical fuse specifications. Seven pages are dedicated to disassembly and reassembly steps for the clutch pedal, speed change lever, brake lever, and steering brake. Troubleshooting charts directly target loss-of-power and runaway-steering faults. You will find exact specifications, such as torquing the crawler adjusting bolt to 130±5 kgf·cm and setting V-belt deflection to 8-10 mm under a 5 kgf load. The bookmarked PDF opens instantly on any device.
What's Inside This Kubota KC70 Manual
| System | Pages | Key Topics |
|---|---|---|
| Dimensions | 5 | Overall Dimensions, Top View Dimensions, Side View Dimensions |
| Hydraulic System (Dumping) | 7-8 | Hydraulic Pump, Flow Of Hydraulic Oil, Hydraulic Hose |
| Wiring Diagram | 10-11 | Wiring Diagram Overview, Cord Color Legend, Fuse Specifications |
| Tightening Torque | 12 | Bolt Material Grades, Crawler Adjusting Bolt |
| Oils | 13 | Transmission Oil, Hydraulic Pump Oil, Total Hydraulic System Capacity |
| Caution for Disassembly and Reassembly | 14-20 | Sprocket, Transmission, Bolt For Crawler, V-Belt, Clutch Pedal, Speed Change Lever, Brake Lever, Steering Brake |
| Adjustment of Component Parts | 21 | Main Clutch Adjustment, Parking Brake Adjustment, Steering Lever Adjustment, Belt Tension Adjustment, Crawler Adjustment |
| Replacement of Wear Out Parts | 22 | - |
| Troubleshooting and Countermeasures | 23-26 | Machine Does Not Drive Powerful., Machine Continued To Turning., Machine Continue To Turning., Engine Stop Or Engine Revolution Decrease, When Turning The Machine. |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Crawler adjusting bolt torque | 130±5kgf·cm | p. 13 |
| General bolt tightening torque (M10, Standard Bolt SS41, S20C) | 39.2-45.1 N.m | p. 12 |
| V-belt (Engine pulley ~ Drive pulley) displacement at center of V-belt / load to belt | 8 - 10mm / 5kgf | p. 15 |
| V-belt (Engine pulley ~ Hydraulic pump pulley) displacement at center of V-belt / load to belt | 8 - 10mm / 5kgf | p. 16 |
| Hydraulic pump discharge volume | 5cc/rev | p. 7 |
| Hydraulic pump revolution | 500~2000rpm | p. 7 |
| Gear Lubrication oil #90 quantity | 1.9L | p. 13 |
| Automatic transmission fluid (ATF) [DEXRON] quantity | 1.9L | p. 13 |
| Fuse rating | 30A | p. 10 |
| M6 Standard Bolt Tightening Torque | 7.8-9.3 N.m | p. 12 |
| M10 Standard Bolt Tightening Torque | 39.2-45.1 N.m | p. 12 |
| Transmission Oil (Gear Lubrication oil #90) Capacity | 1.9L | p. 13 |
Kubota KC70 Common Problems This Manual Covers
Dumper will not move or has severe loss of drive power p. 23
Measure V-belt tension first: press the center of the drive belt at 5 kgf load and confirm deflection is 8-10mm per page 15. Inspect crawler tension and verify the adjusting bolt torques to 130±5 kgf·cm per page 13. Confirm the parking brake is fully released and lubricate the brake lever if stiff. Work through the full drive fault tree on page 23 before pulling the transmission.
Manual Section: Troubleshooting and CountermeasuresDump bed will not raise, raises slowly, or stops under load p. 7
Verify hydraulic oil level first: the system holds 1.5-1.6L of ISO46 oil (page 13). Check the hydraulic pump belt between engine pulley and pump pulley; deflection must be 8-10mm at 5 kgf load per page 16. If oil level and belt are good, inspect hose routing and cylinder connections per the hydraulic circuit on page 7. Relief valve set pressure should be 95+5 kg/cm² at 1800 rpm.
Manual Section: Hydraulic System (Dumping)Frequently Asked Questions
What are the transport dimensions of the Kubota KC70?
The transport dimensions of the Kubota KC70 are an overall length of 2415 mm, an overall width of 1310 mm, and an overall height of 1250 mm. These measurements are derived from the provided dimension diagrams.
What are the replacement specifications for V-belt?
The replacement specifications for V-belts include specific part numbers and tension adjustments. For the Engine pulley ~ Drive pulley, use SC41 (Cog belt) with part no 89915-1166-0, and adjust tension to 8 - 10mm displacement under a 5kgf load. For the Engine pulley ~ Hydraulic pump pulley, use LB24 with part no 89911-2116-0, and adjust tension to 8 - 10mm displacement under a 5kgf load. For the Drive pulley ~ Transmission pulley, use SC71 (Cog belt) with part no 89915-1160-0, and adjust tension to approx. 20mm displacement under a 3.5kgf load.
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Document Quality
This document is a scanned PDF with an optical character recognition (OCR) layer, allowing you to search and copy the full text. The text is crisp and clear throughout, making it easy to read. Diagrams and illustrations are raster images, but they are sharp and their labels are fully legible. The pages are clean, free from scan artifacts, stains, or skewed content. Note that page 2 is a blank filler page.
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