Kobelco SK135SRLC-2 Excavator Shop Manual – Complete PDF Service & Repair Guide

Description

Kobelco SK135SRLC-2 Excavator Shop Manual – Complete PDF Service & Repair Guide

This Kobelco SK135SRLC-2 Excavator Shop Manual is the complete technical documentation set for the SK135SRLC-2 model, covering everything from specifications and scheduled maintenance to full hydraulic and electrical system diagnostics, component disassembly, and major assembly overhaul. Whether you are performing routine servicing, troubleshooting a fault code, or rebuilding the hydraulic pump, control valve, swing motor, or travel motor, this shop manual provides the factory-derived procedures, specifications, and testing standards needed to work accurately and safely on the SK135SRLC-2.

File Details

• Manual Type: Shop Manual (Service & Repair)
• Brand: Kobelco
• Model: SK135SRLC-2
• Document Number: S5YY0012E01
• Publication Date: September 2007
• Language: English
• File Format: PDF
• Page Count: 802 pages
• Serial Number Range: YH05-07001~
• Region: North America

Chapters Covered

• 1. Specifications — Name of components, general dimensions, weight of components, transportation, specifications and performance, type of crawler, type of bucket, combinations of attachment, engine specifications
• 2. Maintenance — Standard maintenance time schedule, maintenance standard and test procedure, performance inspection standards, measurement of engine speed, hydraulic pressure measurement, travel and swing performance testing, attachment operating performance, mechatronic controller adjustment
• 3. System — Mechatronic control system (unload valve control, positive control & P-Q control, boom up conflux, arm in recirculation & conflux, arm-in anti-cavitation, arm-out conflux, bucket digging/dump control, swing priority, travel straight, travel independent, pressure release, N&B switch control, option conflux), hydraulic system, electric system, components system, air-conditioner system
• 4. Disassembly — Attachment (removing and installing bucket, arm, boom, cylinder disassembly), upper structure (hydraulic pump, control valve, pilot valve, swing motor, swivel joint), travel system (crawler, upper/lower roller, front idler, sprocket, travel motor, swing bearing)
• 5. Troubleshooting — By error codes (A-series through R-series codes), by trouble (hydraulic system, electric systems, engine related), trouble diagnosis mode
• 6. Engine — Complete engine service information (based on MITSUBISHI HEAVY INDUSTRIES service manual)
• 7. Procedure of Installing Options — Optional equipment installation procedures

IMAGES PREVIEW

This Kobelco SK135SRLC-2 shop manual is organized into seven major sections that mirror the complete service lifecycle of the machine. The specifications chapter gives you baseline dimensions, component weights, and attachment combinations so you can plan lifts and verify machine configuration. The maintenance section provides scheduled service times, inspection standards, and test procedures — including how to measure engine speed, hydraulic pressures, travel deviation, swing performance, and attachment operating times. The system chapters explain how the mechatronic control, hydraulic circuits, and electrical systems function, which is essential for diagnosing faults rather than simply replacing parts. The disassembly chapter walks through removing and installing major assemblies: bucket, arm, boom, cylinders, hydraulic pump, control valve, pilot valves, swing motor, swivel joint, crawler, rollers, idler, sprocket, travel motor, and swing bearing. Troubleshooting is covered through error codes, symptom-based diagnosis, and a dedicated trouble diagnosis mode. The engine chapter covers the Mitsubishi D04FR engine, and the options chapter handles installation of optional equipment.

What This Shop Manual Enables You to Do

The Kobelco SK135SRLC-2 Shop Manual is not a generic guide — it is the model-specific service documentation for this exact excavator. With it, you can:

• Perform complete scheduled maintenance with the correct intervals, fluid capacities, and adjustment values
• Test and adjust hydraulic pressures, including main relief, port relief, pilot relief, and swing overload relief settings
• Diagnose faults through the mechatronic controller error code system and the service diagnosis display
• Execute the mechatronic controller pump adjustment (B adjustment) and unload valve adjustment (C adjustment)
• Remove, disassemble, inspect, and reassemble the hydraulic pump and regulator, control valve, pilot valves, swing motor, travel motor, and swivel joint
• Service the undercarriage: crawler tension adjustment, track link assembly, upper and lower rollers, front idler, idler adjuster, sprocket, and swing bearing
• Diagnose and repair hydraulic system problems by symptom — slow boom, slow arm, slow bucket, swing drift, travel deviation, and more
• Understand the mechatronic control functions: positive control, P-Q control, boom up conflux, arm recirculation, swing priority, travel straight, and pressure release
• Work on the engine using the included Mitsubishi D04FR engine service information

The value of having the correct procedures and specifications cannot be overstated. Hydraulic systems operate at pressures up to 37.8 MPa (5480 psi), and incorrect assembly or adjustment can lead to component failure, oil leaks, or unsafe machine operation. Torque values, clearances, and adjustment procedures in this manual are given for the SK135SRLC-2 specifically. The troubleshooting chapters alone save hours of diagnostic time by giving you a structured path from symptom to cause to remedy.

Key Technical Areas Covered

Hydraulic System

The hydraulic system chapters cover the main pump (K7V63DTP179R), control valve (KMX13YD), swing motor unit (M2X63CHB), travel motor unit (GM21VX-A-45/75-25), cylinders (boom Ø100×Ø70×1092, arm Ø115×Ø80×1120, bucket Ø95×Ø70×903), swivel joint, and all related circuits. Complete hydraulic circuit diagrams with color-coded lines show the neutral circuit, travel circuit, bucket circuit, boom circuit, swing circuit, arm circuit, combined circuits, and pressure release circuit. Relief valve adjustment procedures, pump regulator adjustment, and flow control characteristics are documented with specific torque values and adjustment ranges.

Mechatronic Control System

The SK135SRLC-2 uses an advanced mechatronic control system that manages pump flow, unload valves, travel straight, swing priority, and numerous other functions. This manual explains the input/output configuration, self-diagnosis display, service diagnosis display function, trouble history diagnosis, and trouble diagnosis mode. The multi-display on the gauge cluster is fully documented, including how to navigate service menus, read error codes, and perform adjustments.

Electrical System

Full electrical circuit diagrams are provided across multiple pages, showing the mechatronic controller (C-1), gauge cluster (C-2), engine controller (C-8), fuse and relay box (E-1), and all sensors, solenoids, switches, and motors. Harness layouts with connector pinouts, wire colors, and routing are included, along with troubleshooting procedures for electrical faults by error code and by symptom.

Troubleshooting

Troubleshooting is covered from two angles: by error code and by trouble symptom. The error code chapter lists codes A025 through R184 with judging conditions, symptoms, control in the event of failure, and step-by-step checking procedures. The by-trouble chapter covers hydraulic system symptoms (all controls slow, engine stall, lever neutral movement, poor fine operability, slow boom/arm/bucket, swing problems, travel problems, option circuit problems) and electrical system symptoms (engine does not stop, CPU data communication error, auto accel faults, wiper faults). The trouble diagnosis mode chapter explains the automated diagnostic routines for unload system, pump system, travel straight system, engine system, and pilot system.

Disassembly and Assembly

Step-by-step disassembly and assembly procedures are given for all major components, including the hydraulic pump and regulator, control valve, pilot valves, swing motor unit, swivel joint, cylinders, travel motor, and undercarriage components. Each procedure includes required tools, tightening torques, and inspection criteria. The control valve disassembly covers individual spool removal and reassembly for every section — P1/P2 unload, travel, boom, bucket, arm 1, arm 2, swing, option, and travel straight.

Why This Manual Matters

Working on an excavator without the correct specifications is risky and inefficient. This Kobelco SK135SRLC-2 shop manual gives you the exact torque values, pressure settings, clearances, and adjustment procedures that Kobelco specifies for this machine. It covers both the routine — filter changes, fluid capacities, track tension — and the complex — mechatronic controller calibration, hydraulic pump regulator adjustment, control valve overhaul, and error code diagnostics. The maintenance time schedule helps you plan service operations, and the component weight tables let you rig and lift safely. Whether you are a professional technician, a fleet maintenance manager, or an owner-operator who does their own repairs, this manual is the reference you will return to again and again.

This manual also includes the complete maintenance standard and test procedure section, which defines performance inspection standards for engine speed, hydraulic pressure, travel speed, swing speed, attachment operating time, cylinder oil tightness, and swing bearing axial play. Service limits and repair values are given so you can make informed decisions about when to adjust and when to replace. The engine chapter, based on the Mitsubishi Heavy Industries service manual, covers the D04FR engine — a water-cooled, 4-cycle, 4-cylinder direct injection diesel with intercooler turbocharger producing 74 kW (101 PS) at 2,000 min-1 and 375 N·m (277 lbf·ft) at 1,600 min-1.

Instant PDF Delivery

This Kobelco SK135SRLC-2 Excavator Shop Manual is delivered as an instant PDF download after payment. There is no shipping, no waiting for a physical book, and no restriction on how many devices you use it on. View it on a laptop or tablet in the workshop, print only the pages you need for a specific job, and keep the complete manual accessible whenever you service or repair your SK135SRLC-2 excavator. With 802 pages covering every major system and procedure, this manual is the complete technical companion for the SK135SRLC-2.