SANY SY135F Hydraulic Forestry Crane Maintenance Manual – PDF Download

Description

SY135F Hydraulic Forestry Crane Maintenance Manual

This is the complete maintenance manual for the SY135F Hydraulic Forestry Crane, published by SANY Heavy Machinery Co., Ltd. Whether you own, operate, or service an SY135F, this 556-page document gives you the structure, function, maintenance standards, testing procedures, and disassembly instructions needed to keep the machine running correctly.

The manual covers the SY135F forestry crane with its Isuzu BB-4BG1TRP diesel engine, hydraulic system, electrical control system, undercarriage, slewing mechanism, log grapple working device, and cab. Every major assembly is documented with cross-sectional illustrations, exploded views, hydraulic schematics, wiring diagrams, and step-by-step service procedures.

File Details

• Manual Type: Maintenance Manual (Repair Manual)
• Brand: SANY Heavy Machinery Co., Ltd.
• Model: SY135F Hydraulic Crawler Forestry Crane
• Document Number: PS00016223
• Publication Date: 2021-04-07 (01-2021 edition)
• Language: English
• Page Count: 556 pages
• File Format: PDF

Chapters Covered

• 1. Preface — Safety warnings, reading method of the maintenance manual, explanation of maintenance standards, handling of electrical and hydraulic components, pipe joints, bolts and nuts, split flange maintenance, conversion tables
• 2. Safe — Instructions on safety signs, general notices, work area cleanliness, storage of liquid, cleaning of parts and machine, reasonable dressing, personal protective equipment, correct use of tools, fire extinguisher and emergency exit, preparatory work before maintenance, notices for maintenance/repair, other notices
• 3. Specification — General assembling diagram, overall dimensions, operation range, feature curve of engine, specification table, weight table, engine oil/fuel/coolant
• 4. Structure, Function and Maintenance Standard — Engine and cooling system, transmission system, slewing bearing and slewing mechanism, lower travelling device (track frame, tensioning device, driving wheel, guide wheel, carrying wheel, supporting wheel, track, triple track shoes), hydraulic system (Part 1: arrangement diagram, control system, hydraulic oil tank and filter, hydraulic pump, swash plate plunger pump, pilot pump, regulator), hydraulic system (Part II: control valve KMX13RB/M45201C, central slewing connector, running motor, travelling motor final transmission), hydraulic system (Part 3: slewing motor, retaining brake, overflow valve, anti-swing valve, electromagnetic valve, PPC accumulator, pilot oil filter, PPC valve, hydraulic cylinder), working device (component sizes, grab arm dimensions, log grapple dimensions), engine control, electrical control system, display system
• 5. Standard Value of Components — Table of standard values for engine, table for standard value of body-related parts
• 6. Testing and Adjustment — Measurement of exhaust gas color, valve clearance adjustment, compression pressure measurement, engine oil pressure measurement, engine speed sensor adjustment, fan belt tension, slewing support bearing clearance, crawler plate tensioning device, oil pressure in oil ways for working device/slewing/travelling, control oil way pressure, electromagnetic valve output pressure, PPC valve output pressure, working device and slewing PPC valve adjustment, hydraulic settlement inspection, residual pressure release, oil leakage measurement, air bleeding
• 7. Trouble Diagnosis — Precautions, work procedure, inspection before diagnosis, category and steps, adjustment service, connector position diagrams, wiring diagrams, trouble diagnosis for electrical system (E-1 through E-22), trouble diagnosis for hydraulic and mechanical systems (H-1 through H-24)
• 8. Disassembling and Assembling — Radiator assembly, engine and hydraulic pump assembly, track shoe assembly, driving wheel, final transmission assembly, guiding wheel assembly, tension spring, track roller/sprocket assembly, slewing motor and slewing mechanism assembly, central slewing joint assembly, working device assembly, slewing table assembly, back slewing bearing assembly, hydraulic oil tank assembly, control valve assembly, hydraulic pump assembly, hydraulic pump input shaft oil seal, manual pilot valve assembly, travel pilot valve assembly, hydraulic cylinder assembly, balance weight assembly, cab assembly, cab glass, front window assembly, display screen, controller assembly, radio, storage battery, key switch, fuse box, wiper, relay, sensor, terminal of plug-in part
• 9. Hydraulic & Electrical Diagram — SY135C3I2K (GB) hydraulic schematic diagram, schematic diagram for electrical system, cab harness, control switch harness, body harness

What This SY135F Manual Gives You

This SANY SY135F maintenance manual is written for experienced technical personnel and provides the technical information necessary for maintenance and repair of the machine. Each section builds on the last: the structure and function chapters explain how every component works and what it looks like inside, the maintenance standard tables tell you what clearances and wear limits are acceptable, the testing and adjustment chapter shows you how to measure and correct pressures and clearances, the trouble diagnosis chapter maps symptoms to causes, and the disassembly and assembly chapter walks you through the physical work of removing, inspecting, and reinstalling components.

The hydraulic system coverage is particularly detailed. The manual documents the K7V63DTP swash plate plunger pump, the KR76-0E23 regulator, the KMX13RB/M45201C control valve with its individual spool operations (boom, grab arm, bucket, travelling, slewing), the travelling motor with its final transmission, the slewing motor with retaining brake and anti-swing valve, the PPC valve for working device and travel, and the hydraulic cylinder assemblies. Hydraulic schematics show the oil flow paths through the control valve for each operation.

The electrical control system chapter covers the engine-pump combined control function, pump control, electrical positive flowrate control, valve control function, double-travelling-speed control, engine preheating, automatic idling, automatic acceleration, the display system, and the sensors. Wiring diagrams for the cab circuit, engine circuit, and sensor/solenoid valve circuit are included, along with connector position diagrams and pinout tables.

Who This Manual Is For

This SY135F Hydraulic Forestry Crane maintenance manual is intended for experienced technical personnel — mechanics, service technicians, and maintenance engineers who already have a working knowledge of hydraulic and electrical systems. It is not a beginner’s guide. The safety section at the beginning must be read and understood before any work is performed. The manual repeatedly emphasises that incorrect maintenance and repair operations are dangerous and can cause serious injury or death.

If you are responsible for the upkeep of a SANY SY135F forestry crane, this manual allows you to perform scheduled maintenance, diagnose faults, adjust pressures and clearances, and carry out component removal and installation with the correct procedures, torque values, and specifications.

Why Correct Procedures and Specifications Matter

The SY135F is a specialised forestry machine with a log grapple working device. Its hydraulic system operates at pressures up to 34.3 MPa, and the electrical control system coordinates engine speed, pump displacement, and valve operation. Guessing at clearances, torque values, or pressure settings can lead to component failure, hydraulic leaks, electrical faults, or unsafe machine behaviour. This manual provides the standard values, permissible values, and adjustment procedures that keep the machine within specification.

Torque values for critical fasteners are given throughout — for example, the slewing table fixing bolt at 4549±59 N·m, the counterweight mounting bolt at 1180–1470 N·m, and the hydraulic pump drain plug at 549 N·m. Clearance limits for the slewing support bearing, track tension, cylinder bushings, and gear backlash are listed with repair limits. Without these numbers, a technician is working blind.

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Instant PDF Delivery

This SY135F Hydraulic Forestry Crane maintenance manual is delivered as an instant PDF download. There is no shipping, no waiting for a physical book, and no risk of a lost or damaged package. Once payment is complete, you can download the file and open it on any device — laptop, tablet, or smartphone. You can print the pages you need for the workshop, keep the digital copy for quick reference, and search through the text to find the section you are looking for.

With 556 pages covering engine, hydraulics, electrical, undercarriage, working device, troubleshooting, and disassembly/assembly, this manual is a complete technical reference for the SANY SY135F forestry crane.