Shantui SG21-3 Motor Grader Operation & Maintenance Manual – PDF Download

Description

Shantui SG21-3 Motor Grader Operation & Maintenance Manual

The Shantui SG21-3 is a self-propelled motor grader rated at 160 kW (215 HP) and driven by a Cummins 6CTAA8.3-C215 diesel engine. This Shantui SG21-3 Operation & Maintenance Manual is the document that accompanies the machine: it explains the grader’s structure and performance, the correct operating procedures, the maintenance and service schedule, troubleshooting, transport and storage. Shantui addresses it to both the operator and the maintenance technician, and the opening warning states clearly that anyone who operates or services the machine must read the manual first and keep it with the machine for reference.

File Details

• Manual type: Operation & Maintenance Manual
• Brand: SHANTUI
• Model: SG21-3
• Machine: Motor grader (self-propelled)
• Engine covered: CUMMINS 6CTAA8.3-C215
• Rated power: 160 kW (215 HP)
• Language: English
• Page count: 154 pages
• File format: PDF
• Also included: Lubrication Chart and a Fuel, Coolant and Lubricants chart

Chapters Covered

• Safety – safety marks and signal words, safety labels and their positions on the machine, safety rules and safety regulations
• Control Device – layout of controls, function of each control, combined instrument and its main function, other devices (starting switch, horn, fuse box, indicator lamps, lamp switches, operator’s seat, air conditioner, fire extinguisher)
• Operation – checks before starting, starting method and procedure, traveling, turning, braking, parking, stopping the engine, operation in special climates, degree of slope, general precautions, traveling in water and in desert
• Working – blade operation, fore wheel lean, leveling work, ditching work, scraping slopes, blade adjustment, methods of extending machine life, operation points, fore moldboard, rear ripper
• Structure and Function – engine, torque converter, gearbox, rear axle, balance box, front axle, tyres, operating hydraulic system, hydraulic tank, steering hydraulic system, service brake hydraulic system, electric system
• Troubleshooting – power system, electrical system, hydraulic system, brake system, working system, turning system
• Maintenance and Service – maintenance table, everyday service, initial 50 hours, initial 100 hours, every 50 / 250 / 500 / 1000 / 2000 / 3000 hour service, when-required items, air conditioning maintenance, adjustment of parts, standard tightening torque for bolts and nuts
• Assembly and Disassembly Precautions – disassembly, assembly, disassembling and assembling bearings, assembling oil seals
• Transportation and Storage – transportation, storage, towing
• Purpose and Main Technical Parameter – purpose, model number and name, outline drawing, outline dimensions, main specification and technical parameters, transmission diagram
• Attached Charts – lubrication chart and the fuel, coolant and lubricants reference chart

What This Manual Gives You

This is a working document, not a brochure. The first chapter walks through the grader’s safety labels and the exact position of each one on the frame, then lays out the rules for starting, operating and parking the machine. From there the manual moves into the cab, identifying every lever, pedal and switch and explaining what each one does – the gear shift lever, fuel control lever, work equipment control levers, brake pedal, hand brake, steering, fore wheel lean, blade lift, blade lean, blade rotation and blade side-out.

The operation chapter sets out the machine’s real working limits: the degree of slope the grader can safely work on, the maximum water depth for wading, the correct gear for climbing and for flat road travel, and the procedure for shifting up and down without colliding the drive train. The working chapter then explains how to actually cut grade – leveling, ditching, calibration, deepening, trimming, and scraping slopes – along with fore wheel lean, blade angle and how to keep the blade from loading the machine past its traction limits.

Systems and Troubleshooting

The structure and function chapter goes through the major systems in order: the engine, torque converter, gearbox, rear axle, balance box, front axle, tyres, operating hydraulic system, hydraulic tank, steering hydraulic system, service brake hydraulic system and electric system. The gearbox section explains the six forward and three reverse speeds and the electro-hydraulic shift control, while the hydraulic section covers the split-flow pump, multi-way change-over valve, hydraulic locks and the circuits that drive blade lift, blade lean, blade rotation and fore wheel lean.

The troubleshooting chapter is organised by symptom for six systems – power, electrical, hydraulic, brake, working and turning. Each entry pairs a fault with its possible causes and the corrective measure: low shift pressure, a machine that will not travel, a blade that will not turn, a brake that will not release, steering that is heavy, and similar. It is the chapter that gets a broken grader back to work.

Maintenance Intervals and Adjustments

Maintenance is laid out by hour interval rather than by vague description: initial 50 hours, every 50 hours, initial 100 hours, and then 250, 500, 1000, 2000 and 3000 hour service. The scheduled items include changing the gearbox and torque converter oil, cleaning and replacing the hydraulic return and suction filter cartridges, checking and adjusting the fan and water pump belts, checking chain tension in the balance box, changing rear axle and balance box oil, and replacing the wheel flange brake friction discs. A separate table lists parts that must be periodically replaced – hydraulic tank filter elements, fuel hoses, torque converter-to-radiator hoses, steering cylinder seals – with the replacement interval for each.

The adjustment section gives the working values a technician needs: blade guide clearance, turning circle radial and axial limits, hand brake adjustment, fan belt deflection at a stated force, and the standard tightening torque table for metric bolts and for hydraulic hose fittings. The assembly and disassembly chapter then sets out the precautions for bearings, bushings, seals and oil seals so parts go back in without damage.

Specifications, Transport and Storage

The final chapter collects the machine’s main technical parameters – blade dimensions, blade cutting depth and hoisting height, blade revolution and cutting angle range, turning radius, climbing capacity, hydraulic working pressure, brake oil pressure, tyre size and rim type – together with the outline dimensions and a transmission diagram showing how power flows from the engine through the gearbox, balance box and rear axle. The transport and storage chapter covers self-transportation, loading on a trailer, hoisting with the frame lifting hooks, long-term storage preparation and the towing limits.

Who This Manual Is For

This SG21-3 Operation and Maintenance Manual suits the owner-operator who needs the correct start-up and shutdown routine, the fleet mechanic who services the grader on schedule, and the technician who has to diagnose a fault in the field. The operating procedures and the maintenance intervals in it are the difference between a grader that lasts and one that wears out ahead of time – the manual itself notes that poor lubrication, wrong oil, missed cooling system service and sudden shutdown of a hot engine all shorten the machine’s life.

Because the Shantui SG21-3 Operation & Maintenance Manual gathers the operating rules, the maintenance schedule, the adjustment values and the troubleshooting tables into one document, it removes the guesswork from servicing this grader and gives you Shantui’s own reference for the machine.

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Delivered as an instant PDF download after payment – no shipping, no waiting. Read it on a laptop, tablet or phone in the workshop, or print the pages you need and keep them with the machine.