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Mec 3084RT User Manual

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Service & Parts Manual
Part # 91885 R1
January 2019
Speed Level Series
RT - Internal Combustion
ES - Electric
2684ES Serial Number Range 12700000 - Up
2684RT Serial Number Range 12800000 - Up
3084ES Serial Number Range 11700000 - Up
3084RT Serial Number Range 11800000 - Up

Table of Contents

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Mec 3084RT Specifications

General IconGeneral
Platform Capacity250 kg
Horizontal Reach20.8 m
Weight21, 500 kg
Drive Type4 x 4
Turntable Rotation360° continuous
Platform Height28.7 m
Power SourceDiesel
Fuel TypeDiesel
Max Working Height30.7 m
Max Platform Height28.7 m
Working Height30.7 m
Machine Width2.49 m
Stowed Height3.1 m
Wheelbase3.3 m

Summary

Service & Parts Manual

Section 2 - Safety Symbols & General Safety Tips

Safety Symbols & General Safety Tips

Explains safety symbols, colors, and signal words used in MEC manuals and decals, along with general maintenance advice.

Section 3 - Specifications

RT Models Specifications

Details technical specifications for RT models, including dimensions, lift capacity, and power systems.

ES Models Specifications

Details technical specifications for ES models, including dimensions, lift capacity, and power systems.

Section 4 - General Information

Key Safety Tips

Provides critical safety advice, including never servicing an elevated platform without support and using proper lifting equipment.

Hydraulic System

Explains hydraulic system warnings, fluid properties, and general maintenance precautions.

Electrical System

Covers electrical system safety, battery handling, and potential hazards like sparks and explosions.

Emergency Systems And Procedures

Explains the operation of emergency stop and lowering systems, including critical safety warnings.

Lift And Support The Machine

Provides safety instructions and step-by-step procedures for safely lifting and supporting the machine using jacks and stands.

Section 5 - Hydraulic System

Hydraulic System – General

Describes the integrated hydraulic circuit, load-sensing system, and pump operation for controlling machine functions.

Hydraulic Fluid

Covers handling precautions for hydraulic fluid, recommended types, and a detailed system flushing procedure.

Hydraulic Pump - 3084RT

Provides instructions for removing and installing the hydraulic pump on 3084RT models, including torque specifications.

Drive And Brake System Wheel Drive

Explains the dynamic braking circuit and provides instructions for housing and shaft disassembly/assembly for front wheel motors.

Rear Wheel Motors With Brakes (DT-710)

Provides disassembly and assembly instructions for the DT710 rear wheel motors with integral brakes.

Steering Circuit

Describes the steering system components and operation, including hydraulic cylinders and control valves.

Platform Leveling System

Details the platform leveling system, its hydraulic cylinders, and control by the GP400 processor.

Platform Lift Circuit

Explains the lift system operation for both 3084RT and 3084ES models, including lowering speed regulation.

General Cylinder Repair

Provides safety warnings and procedures for cylinder disassembly, including preparation and cleaning steps.

Section 6 - Electrical System

Electrical System – General

Describes the electrical control system, including lower and upper controls, and emergency stop functions.

Batteries

Covers battery warnings, maintenance, and specific battery configurations for 3084RT and 3084ES models.

Battery Replacement

Provides step-by-step instructions for safely removing and installing batteries, including necessary precautions.

Upper Controls - 3084RT Dual Fuel/Diesel

Details the controls and functions available on the upper control station for 3084RT models.

GP400 Control Module Setup

Describes the location of GP400 modules and where to find diagnostic and wiring information.

GP400 Calibration

Details the procedures for GP400 calibration, including sensor calibration and specific model calibrations (ANSI/CE).

Section 7 - Mechanical System

Mechanical Components

Describes the major components of the machine and the steps required to service them.

Tires And Wheels

Covers inspection of tires for faults and warnings regarding the use of approved replacement tires.

Section 8 - Troubleshooting - 3084RT Models

Electrical System Troubleshooting - 3084RT

Discusses the electronic control system design for low maintenance and troubleshooting protection for modules.

Hydraulic Pressure Adjustment - 3084RT

Details procedures for checking and adjusting pressure relief valves on the hydraulic system for 3084RT models.

Section 9 - Troubleshooting - 3084ES Models

General Troubleshooting Tips

Covers common issues for 3084ES hydraulic fluid pumps and electrical system malfunctions.

Electrical System Troubleshooting - 3084ES

Discusses the electronic control system for 3084ES models, highlighting module protection and high-pressure washing warnings.

EZ-Cal Scan Tool

Introduces the EZ-Cal scan tool for system information and adjustments, detailing its connection and basic operation.

Shutdown Help Messages

Lists shutdown HELP messages that prevent specific functions from being used, detailing causes and flash codes.

Troubleshooting Chart

Provides a guide to diagnose problems by matching symptoms to possible causes and remedies, emphasizing EZ-Cal use.

Section 10 - Schematics

Section 15 - Hydraulics

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