The Fai Komatsu SK 07 J, SK05 J, SK09 J technical manual PDF strips these three skid-steer loaders down to their working circuits in 16 factory pages. Wiring diagrams take up nearly half the book, with the fuse chart and wire color legend that let you trace an electrical fault back to its source. Hydraulic schematics map the travel servo control, the bucket lifting circuit and the pilot control manipulator, plus a dedicated SK05J layout without brake lines, while cutaway drawings expose the final drive and final transmission assemblies. Set your main relief at 155 bar, hold pilot pressure under the 25 bar maximum, and fill the cooling system with its 9 liters. Weak bucket cylinders usually come down to one missing number. Bookmarks and a live text layer put that number two clicks away.
What's Inside This Fai Komatsu SK 07 J, SK05 J, SK09 J Manual
| System | Pages | Key Topics |
|---|---|---|
| Technical Information | 1 | Engine, Transmission, Parking Brake |
| Maintenance | 2 | Engine, Coolant, Fuel |
| Hydraulic Circuit | 3 | Hydraulic Circuit SK07 J, Distributore, SK05J Without Brake Lines |
| Final Transmission | 4 | Final Transmission SK07, Final Transmission SK07 J, Transmission Assembly |
| Final Drive | 5 | Final Drive Sk 07, Final Drive SKO7J, Final Drive Section |
| Travel Servo Control | 6 | Translation Servo-Control Hydraulic System, Translation Servosteuerung Hydr. Anlage, Systeme Hydraulique Servo-Commande Translation |
| Loader Servo Control | 7 | Bucket Lifting Servo-Control Hydraulic System, Greifer Aufheben Servosteuerung Hydraulische Anlage, Systeme Hydraulique Servocommande Soulevement Benne |
| Pilot Control Lever | 8 | Translation Control Manipulator, Translation Kontrollmanipulator, Manipulateur Commande Translation |
| Safety Sensor | 9 | Safety Bar, Sicherheitsstangen, Barres De Securite |
| Electrical Circuit | 10-15 | Wiring Diagram SK07J, Glow Plug and Starter Circuits, Sensor Wiring |
| Wiring Legend and Fuses | 16 | Legenda, Fusibili, Colori Fili |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Coolant capacity | 9 L | p. 2 |
| Main hydraulic pressure | 155 Bar | p. 2 |
| Pilot hydraulic pressure | Max. 25 Bar | p. 2 |
| Operating Weight | 2200 Kg | p. 1 |
| Static Tipping Load | 1280 Kg | p. 1 |
| Bucket Capacity | 280 l | p. 1 |
| Engine Power | 30 KW | p. 1 |
| Engine Oil Capacity | 9 l | p. 2 |
| Fuel Tank Capacity | 45 l | p. 2 |
| Hydraulic System Capacity | 18 l | p. 2 |
| Standard Tyre Pressure | 3 Bar | p. 2 |
| Engine Oil Change Interval | 250 H | p. 2 |
Fai Komatsu SK 07 J, SK05 J, SK09 J Common Problems This Manual Covers
Fai Komatsu SK 07 J loader arms lift slowly, bucket tilt loses power under load
Check hydraulic oil level first; the system holds 18 l and low oil aerates the pump fast. Replace the hydraulic filter if it is past the interval on the page 2 maintenance schedule. Then gauge relief pressure: main circuit should hold 155 Bar, pilot circuit no more than 25 Bar. Trace restrictions on the page 3 hydraulic schematic.
Manual Section: Hydraulic Circuit p. 3Engine overheats during long loading cycles, temperature gauge climbs, coolant boils over
Clean the radiator core and cooler fins with compressed air, blowing from the fan side out. Inspect the fan belt for glazing and check its tension. Drain and refill with fresh coolant; the system takes 9 L. Follow the service intervals on the page 2 maintenance schedule to keep the cooling circuit from plugging again.
Manual Section: Maintenance p. 2Auxiliary hydraulics dead or intermittent, attachment couplers hard to connect after shutdown
Relieve trapped pressure first: shut the engine off and cycle the auxiliary control both ways. Clean both coupler faces; one grain of grit holds a poppet open. Verify full seating, then gauge the circuit; it should hold 155 Bar under load. Replace any coupler that weeps or will not lock, and trace the lines on the page 3 hydraulic schematic.
Manual Section: Hydraulic Circuit p. 3One drive side hesitates or machine pulls when travel levers move, motion feels jerky
Test pilot pressure at the servo circuit first; it should read no more than 25 Bar, and a weak pilot supply makes both sides lazy. Compare lever stroke against the travel servo-control diagram on page 6, then open the manipulator per the page 8 assembly diagram and inspect the spools and springs for wear or sticking.
Manual Section: Travel Servo Control p. 6Growling or clunking from chain case at travel speed, drive wheels lag under load
Drain the final drive oil and check it for metal; overdue oil is the usual killer, so change it every 1000 hours per the page 2 schedule. Refill, then run the machine and listen again. If the noise stays, tear down the unit against the final drive assembly diagram on page 5 and inspect gears and bearings for spalling.
Manual Section: Final Drive p. 5Frequently Asked Questions
What are the replacement specifications for the hydraulic system filter on the Fai Komatsu SK 07 J, SK05 J, SK09 J?
The hydraulic system requires a filter with part number 848101126 for the 250-hour service interval and part number 848001073 for the 1000-hour service interval. p. 2
What are the valve clearance specifications for the Fai Komatsu SK 07 J, SK05 J, SK09 J engine?
The valve clearance for both intake (IN) and exhaust (EX) valves on the engine is 0.20 mm when the engine is cold. p. 1
What is the engine oil capacity and required quality for the Fai Komatsu SK 07 J, SK05 J, SK09 J?
The engine oil capacity is 9 liters, and the required oil quality is API CD-SG. The oil should be changed every 250 hours. p. 2
What is the correct tension for the mechanical transmission chains?
The tension for the mechanical transmission chains should be between 5 mm and 20 mm, measured on the front wheel. p. 1
Will this Fai Komatsu SK 07 J Technical Manual download right away?
One searchable PDF covering 16 pages, delivered instantly. No disc, no shipping, no waiting on the post.
Does this Fai Komatsu SK 07 J manual allow printing?
Yes. No DRM, nothing blocks printing, so run off the pages you need on whatever printer you have.
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