SnowEx LT Mechanic's Manual

Straight blade snowplows
Table of Contents

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September 1, 2020
Lit. No. 72188, Rev. 01
SNOWPLOWS
MECHANIC'S GUIDE
RD, HD & LT STRAIGHT BLADE
SNOWPLOWS
CAUTION
Read this manual before servicing the snowplow.

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Summarization of Contents

INTRODUCTION
Recommended Tools and Service Items
Lists necessary tools and optional parts for snowplow service.
SAFETY
SAFETY DEFINITIONS AND LABELS
Defines symbols and explains the importance of warning and instruction labels.
SAFETY PRECAUTIONS
GENERAL, HYDRAULIC, AND PERSONAL SAFETY
Covers general, hydraulic, personal safety, and fire risks.
GENERAL SAFETY GUIDELINES
TORQUE CHART
Lists recommended torque values for fasteners.
BLADE, A-FRAME & HEADGEAR
EMERGENCY TRANSPORT CHAIN INSTALLATION
Instructions for securing the snowplow during transport.
AIMING HEADLAMP BEAMS
Procedure for aligning snowplow headlamp beams.
HYDRAULIC SYSTEM
SYSTEM SPECIFICATIONS
Details system capacity, fluid, and electrical specifications.
FASTENER TORQUE SPECIFICATIONS
Lists torque values for various hydraulic components.
HYDRAULIC UNIT COMPONENTS
Diagram and identification of hydraulic unit parts.
VALVE LOCATIONS
Identifies and locates solenoid cartridge valves on the unit.
CARTRIDGE VALVES AND BLADE MOVEMENT
Explains blade movement functions controlled by cartridge valves.
CHECK VALVES AND RELIEF VALVES
Describes the function, settings, and types of check and relief valves.
HYDRAULIC FITTING AND HOSE INSTALLATION
Provides instructions for installing fittings and hoses.
BLADE DROP SPEED ADJUSTMENT
Procedure for adjusting the blade drop speed.
CAB CONTROLS
OVERVIEW OF CONTROLS
Introduces hand-held and joystick controls and their functions.
OPERATING THE POWER GRIP™ HAND-HELD CONTROL
Detailed instructions for using the hand-held control.
OPERATING THE JOYSTICK CONTROL
Detailed instructions for using the joystick control.
FLEET FLEX ELECTRICAL SYSTEM
SMOOTH STOP AND ONE-TOUCH FLOAT FEATURES
Explains and details how to enable/disable these features.
SECURITY GUARD™ ANTI-THEFT SYSTEM ACTIVATION
Covers activation and code establishment for the anti-theft system.
VEHICLE-SIDE ELECTRICAL COMPONENTS
HARNESS DIAGRAM – 3-PORT ISOLATION MODULE
Illustrates the wiring harness connections for the isolation module.
3-PORT ISOLATION MODULE OVERVIEW
Explains the function and operation of the isolation module.
SCRAPE MAXX™ DOWN FORCE ACCESSORY KIT
OVERVIEW AND INSTALLATION
Explains the purpose, function, and installation of the Scrape Maxx accessory.
OPERATING INSTRUCTIONS
How to enable, disable, and activate Scrape Maxx mode.
ELECTRICAL & HYDRAULIC SCHEMATICS
OVERVIEW AND LEGENDS
Explains schematics, electrical, and hydraulic symbols.
TYPICAL LED PLOW LIGHT, HCM, AND HARNESS DIAGRAM
Illustrates the system for LED plow lights and Headlamp Control Module.
TYPICAL DUAL-WIRE SCHEMATIC
Detailed schematic for halogen/LED plow lights and connections.
TROUBLESHOOTING
HOW TO USE THE TROUBLESHOOTING GUIDE
Instructions on how to effectively use the troubleshooting section.
ELECTRICAL TESTING
Guidance on using test lights and ohmmeters for electrical diagnostics.
BEFORE YOU BEGIN
Essential steps to perform before troubleshooting.
VEHICLE HEADLAMPS
Troubleshooting steps for vehicle headlamp issues.
SNOWPLOW HEADLAMPS
Troubleshooting steps for snowplow headlamp issues.
SNOWPLOW PARK/TURN LAMPS
Troubleshooting steps for park/turn lamp issues.
SNOWPLOW DRL LAMPS
Troubleshooting steps for DRL lamp issues.
VEHICLE LIGHTING CHECK
Procedures for checking vehicle and snowplow lighting operations.
SOLENOID COIL ACTIVATION TEST (SCAT)
Test to identify electrical or hydraulic problems with solenoid coils.
INDIVIDUAL SOLENOID COIL TEST
Steps to test individual solenoid coils using an ohmmeter.
CONTROL/CABLE/PLOW MODULE TEST
Tests for issues with control module communication and power.
MOTOR AND MOTOR RELAY TEST
Procedures to test the motor and its relay when the motor doesn't run.
PUMP PRESSURE TEST
How to test pump pressure and troubleshoot low pressure.
RELIEF VALVE INSPECTION AND ADJUSTMENT
How to inspect and adjust relief valves.
SCRAPE LOCK ADJUSTMENT
Procedure to adjust the scrape lock pressure setting.

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