Western HTS Mechanic's Manual
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Western HTS Mechanic's Manual

Snowplow
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April 15, 2021
Lit. No. 41467, Rev. 01
SNOWPLOWS
MECHANIC'S GUIDE
HTS™ SNOWPLOWS
Featuring the
FloStat
Hydraulic System &
®
Isolation Module Light System
CAUTION
Read this manual before servicing the snowplow.

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  • Page 1 April 15, 2021 Lit. No. 41467, Rev. 01 SNOWPLOWS MECHANIC'S GUIDE HTS™ SNOWPLOWS Featuring the FloStat Hydraulic System & ® Isolation Module Light System CAUTION Read this manual before servicing the snowplow.
  • Page 2 Lit. No. 41467, Rev. 01 April 15, 2021...

  • Page 3: Table Of Contents

    PREFACE SAFETY INFORMATION ................4 SPECIFICATIONS & REQUIRED TOOLS ............ 7 This guide has been prepared to Service of your WESTERN snowplow ATTACHING/DETACHING SNOWPLOW FROM VEHICLE & STORAGE 8 assist the trained mechanic in the equipment is best performed by service of WESTERN snowplows.

  • Page 4: Safety Information

    SAFETY INFORMATION SAFETY DEFINITIONS WARNING/CAUTION AND INSTRUCTION LABELS Become familiar with and inform users about the warning and instruction labels WARNING on the back of the blade. Indicates a potentially hazardous situation that, if NOTE: If labels are missing or cannot be read, see your sales outlet. not avoided, could result in death or serious personal injury.
  • Page 5 FUSES always turn the control OFF FIRE AND EXPLOSION Keep 8' clear of the blade when whenever the snowplow is not The WESTERN electrical and ® it is being raised, lowered, or in use. The power indicator hydraulic systems contain several angled.
  • Page 6 SAFETY INFORMATION VENTILATION TORQUE CHART WARNING CAUTION Recommended Fastener Torque Chart Inch Fasteners Grade 5 and Grade 8 Vehicle exhaust contains Read instructions before Torque (ft-lb) lethal fumes. Breathing assembling. Fasteners should Torque (ft-lb) Size Size Grade Grade Grade Grade these fumes, even in low be fi...
  • Page 7 5/16" thru 7/8", Electrical System – (capacity range 2-1/2", 1/4" pin dia.) 1-1/16", 1-1/8" NOTE: Remove breather/fi ll plug approximate values: Available from your WESTERN outlet: ® • 1/4" socket or nut driver slowly to relieve any pressure in reservoir.

  • Page 8: Attaching/Detaching Snowplow From Vehicle & Storage

    ATTACHING / DETACHING SNOWPLOW FROM VEHICLE & STORAGE HTS™ Attach / Detach Diagram NOTE: After each use of the NOTE: Multiplexed 2-plug systems snowplow, reapply dielectric are equipped with plug covers. grease to the electrical plugs to maintain the protective coating on the terminals.

  • Page 9: Installing Snowplow

    INSTALLING SNOWPLOW BLADE TO A-FRAME Insert the 5/8" x 3-1/2" clevis pin 3. Place the A-frame nose plate 4. Position the rod ends of the through the top hole on the lift over the quadrant pivot section. two 8" rams in the brackets on frame to secure the base end Secure with one 1"...
  • Page 10 INSTALLING STAND SHOE AND RECEIVERS STAND SHOE RECEIVER INSTALLATION 4. Pull and hold the lock pin out; Refer to the chart below to then rotate the handle DOWN determine if height adjustment INSTALLATION and release the lock pin. It must plates are required.
  • Page 11 INSTALLING RECEIVERS 4. If adapter plates are required, 5. Position the receiver between Shown without adapter plate. install as follows: the mount brackets on each side. Align the notches in rear of Position an adapter plate on the receiver with pins in vehicle each side of the receiver as undercarriage.
  • Page 12 NIGHTHAWK™ HEADLAMPS HEADLAMPS Refer to fi gure above for the following 3. Insert seven cable tie anchors instructions. into 1/4" holes on the rear of light bar from the inside, with the WARNING 1. Remove the zip ties securing locking tabs horizontal. Your vehicle must be light bar to lift frame.
  • Page 13 Breather/ Keep 8' clear of the blade Fill Plug when it is being raised, The HTS™ snowplow hydraulic lowered, or angled. Do not system comes pre-assembled, stand between the vehicle fi lled, and fully tested from the and blade or directly in front factory.
  • Page 14 OPERATIONAL TEST AND FINAL ADJUSTMENT BLADE DROP SPEED 3. Turn the quill inward (clockwise) NOTE: The blade will not drop to decrease the drop speed. ADJUSTMENT when quill is fully tightened Turn the quill outward (clockwise). Turn OFF the plow (counterclockwise) to increase WARNING control, turn the quill 1/8 turn...
  • Page 15 OPERATIONAL TEST AND FINAL ADJUSTMENT FINAL INSPECTION AND 3. Fully angle the blade in both directions in raised and lowered ADJUSTMENT positions. Adjust hose fi ttings, wraps, and clamps so that hoses 1. Attach snowplow to the do not contact vehicle bumper, vehicle mount.

  • Page 16: System Overview

    SYSTEM OVERVIEW VEHICLE LIGHTING CHECK Headlamps Daytime Running Lamps (DRLs) Joystick Control or For PN 29070-1: CabCommand Hand-Held Move vehicle headlamp switch Control 1. Check the operation of vehicle to the ON position. Connecting • On vehicles equipped with DRLs lights and then snowplow and disconnecting the headlamp integrated into the vehicle...

  • Page 17: Headlamp Beam Aiming

    SYSTEM OVERVIEW HEADLAMP BEAM AIMING d. See that there is no load in the vehicle other than the driver and ballast as specifi ed Torque headlamp fasteners to Vertical Vertical Align with in the eMatch selection 45 ft-lb once correct visual aim is Centerline Centerline vehicle...

  • Page 18: Hydraulic Hose Routing

    HYDRAULIC HOSE – ROUTING SYSTEM OVERVIEW HOSE ROUTING FOR HTS™ BLADES To Lift Ram Base To PS To Lift To Lift Ram Ram Rod Angle Ram To PS Ram To Lift Ram Base To DS Angle Ram To DS Ram...
  • Page 19 The HTS™ hydraulic unit has blade scrape lock circuitry built in. This feature is activated when the blade Breather is in FLOAT. The HTS blade is raised in approximately 4 seconds and Reservoir angled side to side in approximately 3 seconds.
  • Page 20 SYSTEM OVERVIEW – HYDRAULIC UNIT SOLENOID CARTRIDGE VALVE RELIEF VALVE IDENTIFICATION & LOCATION IDENTIFICATION & LOCATION Pump Relief Valve PS Plowing DS Plowing Relief Valve Relief Valve Relief Valve Scrape Lock Solenoid Cartridge Valves Lit. No. 41467, Rev. 01 April 15, 2021...

  • Page 21: Hydraulic Component Installations

    SYSTEM OVERVIEW – HYDRAULIC HYDRAULIC COMPONENT INSTALLATION Ram Seal Installation Cartridge & Check Valve Removal 1. Lubricate O-rings before 4. Assemble gland to threaded end It is possible to remove cartridges 5. Install a 3/8" barb fi tting into the assembly.

  • Page 22: Hts™ Controls

    SYSTEM OVERVIEW – HTS™ CONTROLS Power Indicator Light (red) ON/OFF Switch (emergency stop on side of control) ON/OFF Button (emergency stop) Joystick Control Hand-Held Control Lit. No. 41467, Rev. 01 April 15, 2021...

  • Page 23: Hand-Held Control

    HAND-HELD CONTROL with SECURITY GUARD™ Snowplow Anti-Theft System Before Activating the Float Light Power Indicator WARNING NOTE: If control function (green) SECURITY GUARD System: Light (red) times out before desired blade To prevent accidental movement is complete, release movement of the blade, Install the control as stated in the button and press again.
  • Page 24 HAND-HELD CONTROL with SECURITY GUARD™ Snowplow Anti-Theft System Smooth Stop Float Light Function Description of Operation (green) Press this button to raise the snowplow and The control automatically allows RAISE cancel the FLOAT mode. Function times out the blade to coast to a stop when after 4.8 seconds.
  • Page 25 1. Turn the vehicle ignition switch Security Code This indicates that your 4-digit an HTS™ control with a diff erent to the "ON" or "ACCESSORY" security code is entered and 4-digit code than the established position.
  • Page 26 Function • The SECURITY GUARD control PN 35500. Off Control is OFF system requires any HTS™ control (other than the one with • In the event that a snowplow is Solid On Control is ON and active the assigned 4-digit security...

  • Page 27: Joystick Control

    LOWER system for the HTS™ snowplows. 2. Move the slide switch on the The system provides a deterrent from Automatic Shutdown side of the control to the "ON"...
  • Page 28 JOYSTICK CONTROL with SECURITY GUARD™ Snowplow Anti-Theft System Smooth Stop Float Light Function Description of Operation (green) Move the control lever toward the top of the The control automatically allows control body to raise the snowplow and cancel RAISE the blade to coast to a stop when the FLOAT mode.
  • Page 29 If the SECURITY GUARD system is Activation & Establishing a 4-Digit following positions: UP, DOWN, activated and you are using a HTS™ 1. Turn the vehicle ignition switch Security Code LEFT, RIGHT, 1, 2, 3, or 4.
  • Page 30 Function • The SECURITY GUARD control PN 35600. Off Control is OFF system requires any HTS™ control (other than the one with • In the event that a snowplow is Solid On Control is ON and active the assigned 4-digit security...
  • Page 31 HAND-HELD MASTER CONTROL FOR THE SECURITY GUARD™ Snowplow Anti-Theft System 1. Turn the vehicle ignition to the Master Control WARNING "OFF" position. Plate To prevent accidental movement of the blade, 2. With the control power OFF, always push the ON/OFF using the tool that was included button to switch the control in the Distributor Master Control...

  • Page 32: Theory Of Operation

    THEORY OF OPERATION SNOWPLOW HYDRAULICS 3-PORT MODULE ELECTRICAL Snowplow Daytime Running Lamps The HTS™ snowplow hydraulic Overview With the snowplow attached, the system performs four blade isolation module is still inactive until Because Daytime Running Lamps movements. either of the two following conditions The isolation module acts as an (DRLs) are controlled diff...

  • Page 33: Theory Of Operation

    THEORY OF OPERATION 3-PORT MODULE ELECTRICAL White Label Non-DRL • Activating a switched accessory • Activating the vehicle park light • Activating the turn signal Module (PN 29060) wire (a key-controlled power circuit applies battery voltage applies battery voltage to the source) applies battery voltage to the module park circuit input.
  • Page 34 THEORY OF OPERATION 3-PORT MODULE ELECTRICAL Green Label DRL Module • Activating a switched accessory • With the park light circuit • PN 29070-1 Only: On vehicles wire (a key-controlled power energized, the control circuit equipped with DRLs integrated (PN 29070-1) source) applies battery voltage to monitors the vehicle high into the vehicle headlamps.
  • Page 35 THEORY OF OPERATION 3-PORT MODULE ELECTRICAL Blue Label Module • Turning on the vehicle ignition • Activating the vehicle park • Activating the turn signal switch provides 12V to the light circuit applies battery applies battery voltage to the (PN 29760-2) switched accessory wire, which voltage to the module park module turn signal circuit input.

  • Page 36: Electrical & Hydraulic Schematics

    ELECTRICAL & HYDRAULIC SCHEMATICS This section contains hydraulic and electrical schematics to help explain ELECTRICAL LEGEND HYDRAULIC LEGEND how the hydraulic unit performs the LINE, WORKING (MAIN) SPRING diff erent functions. A schematic CROSSING WIRE is an abstract drawing showing the purpose of each component LINES JOINING SOLENOID, SINGLE WINDING...
  • Page 37 3-PORT MODULE – WIRING DIAGRAM WIRING – 3-PORT MODULE CAUTION Factory Vehicle Harness On 2-plug electrical systems, Park/Turn plug covers shall be used Lamps whenever snowplow is disconnected. Vehicle battery Battery cable is 12V unfused source. Vehicle Headlamps Vehicle Battery Cable Vehicle Control Harness To Snowplow Control Vehicle Lighting...
  • Page 38 ELECTRICAL SCHEMATIC – 3-PORT MODULE Snowplow Assembly Vehicle Battery Cable, 4-Receptacle Plow (end view) – Pump 1 – Red (control power) 1 – Red Control Motor – 2 – Red (twisted with #3) 2 – Green 3 – Black (twisted with #2) 3 –...
  • Page 39 LOW BEAM HEADLAMPS WITH SNOWPLOW CONNECTED TO VEHICLE (3-PORT MODULE) Snowplow Assembly Vehicle Battery Cable, 4-Receptacle Plow (end view) – Pump 1 – Red (control power) 1 – Red Control Motor – 2 – Red (twisted with #3) 2 – Green 3 –...
  • Page 40 HIGH BEAM HEADLAMPS WITH SNOWPLOW CONNECTED TO VEHICLE (3-PORT MODULE) Snowplow Assembly Vehicle Battery Cable, 4-Receptacle Plow (end view) – Pump 1 – Red (control power) 1 – Red Control Motor – 2 – Red (twisted with #3) 2 – Green 3 –...
  • Page 41 THEORY OF OPERATION 4-PORT MODULE ELECTRICAL Snowplow Headlamps With the snowplow attached, the isolation module is still inactive until either of the two following conditions The isolation module acts as an are met: The vehicle parking lights electrical hub, automatically directing are turned ON or the vehicle ignition vehicle power to the appropriate switch is turned ON.
  • Page 42 SYSTEM OVERVIEW – ELECTRICAL WIRING – 4-PORT MODULE CAUTION Factory Vehicle Harness On 2-plug electrical systems, Park/Turn plug covers shall be used Lamps whenever snowplow is disconnected. Vehicle battery Battery cable is 12V unfused source. Vehicle Headlamps Vehicle Battery Cable PN 29175 Adapter Vehicle Control Harness...
  • Page 43 ELECTRICAL SCHEMATIC – 4-PORT MODULE Snowplow Assembly Vehicle Battery Cable, 4-Receptacle Plow (end view) – Pump 1 – Red (control power) 1 – Red Control Motor – 2 – Red (twisted with #3) 2 – Green 3 – Black (twisted with #2) 3 –...
  • Page 44 LOW BEAM HEADLAMPS WITH SNOWPLOW CONNECTED TO VEHICLE (4-PORT MODULE) Snowplow Assembly Vehicle Battery Cable, 4-Receptacle Plow (end view) – Pump 1 – Red (control power) 1 – Red Control Motor – 2 – Red (twisted with #3) 2 – Green 3 –...
  • Page 45 HIGH BEAM HEADLAMPS WITH SNOWPLOW CONNECTED TO VEHICLE (4-PORT MODULE) Snowplow Assembly Vehicle Battery Cable, 4-Receptacle Plow (end view) – Pump 1 – Red (control power) 1 – Red Control Motor – 2 – Red (twisted with #3) 2 – Green 3 –...

  • Page 46: Hydraulic Schematic

    HYDRAULIC SCHEMATIC ANGLE RIGHT ANGLE LEFT LIFT Raise Lower Quill Angle Relief Scrape Lock Angle Relief Pump Relief Pump Filter Draws Fluid on Lower Return to Reservoir Lit. No. 41467, Rev. 01 April 15, 2021...
  • Page 47 RAISE – ELECTRICAL System Response 2. Hydraulic fl uid from the pump fl ows through the activated S3 Pump and unactivated S2, through Motor 1. By activating the RAISE function the internal check valve in S1, on the cab control, the control into the rod end of the lift ram, sends a signal to the plow causing it to retract.

  • Page 48: Angle Right

    RAISE – HYDRAULIC ANGLE RIGHT ANGLE LEFT LIFT Raise Lower Quill Angle Relief Scrape Lock Angle Relief Pressure Return Pilot Line Pump Relief Pump Filter Draws Fluid on Lower Return to Reservoir Lit. No. 41467, Rev. 01 April 15, 2021...
  • Page 49 LOWER / FLOAT – ELECTRICAL System Response Pump Motor 1. By activating the LOWER 2. With the weight of the snowplow function on the cab control, the on the rod end of the lift ram and control sends a signal to the plow S1 cartridge valve shifted, the module to complete the ground lift ram extends.
  • Page 50 LOWER – HYDRAULIC ANGLE RIGHT ANGLE LEFT LIFT Raise Lower Quill Angle Relief Scrape Lock Angle Relief Drawn from Tank Return Pilot Line Pump Relief Pump Filter Draws Fluid on Lower Return to Reservoir Lit. No. 41467, Rev. 01 April 15, 2021...
  • Page 51 ANGLE RIGHT – ELECTRICAL System Response 3. The retracting PS ram pushes the hydraulic fl uid out of its base Pump end through the activated S2 Motor 1. By activating the angle right (R cartridge and unactivated S3, on the control face) function on back to the reservoir.
  • Page 52 ANGLE RIGHT – HYDRAULIC ANGLE RIGHT ANGLE LEFT LIFT Raise Lower Quill Angle Relief Scrape Lock Angle Relief Pressure Return Pilot Line Pump Relief Pump Filter Draws Fluid on Lower Return to Reservoir Lit. No. 41467, Rev. 01 April 15, 2021...

  • Page 53: Angle Left

    ANGLE LEFT – ELECTRICAL System Response 3. Pressure within the hydraulic circuit causes the P/O check Pump valve (PC1) to open. Motor 1. By activating the angle left (L on the control face) function on the 4. The retracting DS ram pushes cab control, the control sends the hydraulic fl...
  • Page 54 ANGLE LEFT – HYDRAULIC ANGLE RIGHT ANGLE LEFT LIFT Raise Lower Quill Angle Relief Scrape Lock Angle Relief Pressure Return Pilot Line Pump Relief Draws Fluid Pump Filter on Lower Return to Reservoir Lit. No. 41467, Rev. 01 April 15, 2021...

  • Page 55: Hold In Raise Position

    HOLD IN RAISE POSITION – HYDRAULIC Control: None ANGLE RIGHT ANGLE LEFT LIFT System Response Raise Lower Hydraulic fl uid is trapped in the Quill rod end of the lift ram by the internal check valve in solenoid cartridge valves S1. Angle Relief Scrape...

  • Page 56: Striking An Object While Plowing

    STRIKING AN OBJECT WHILE PLOWING Blade Movement: Striking an Force applied Force applied Object While Plowing when pushing when backdragging ANGLE RIGHT ANGLE LEFT LIFT Control: None System Response: Raise Lower 1. Hydraulic fl uid is trapped in the Quill base end of the cylinders by the relief valves, the P/O check valve (PC1) and solenoid cartridge...
  • Page 57 STRIKING AN OBJECT WHILE PLOWING Blade Movement: Striking an Force applied Force applied Object While Plowing when pushing when backdragging ANGLE RIGHT ANGLE LEFT LIFT Control: None System Response: Raise Lower 1. Hydraulic fl uid is trapped in the Quill base end of the cylinders by the relief valves, the P/O check valve (PC1) and solenoid cartridge...
  • Page 58 SCRAPE LOCK OPEN (ALLOWS BLADE TO RAISE, FOLLOWING SURFACE CONTOUR) ANGLE RIGHT ANGLE LEFT LIFT Raise Lower Quill Angle Relief Scrape Lock Angle Relief Drawn from Reservoir Return to Reservoir Pump Relief Pump Filter Draws Fluid on Lower Return to Reservoir Lit.
  • Page 59 TROUBLESHOOTING GUIDE – TABLE OF CONTENTS INTRODUCTION ................... 60 SOLENOID COIL ACTIVATION TEST (SCAT)..........66 HOW TO USE THE TROUBLESHOOTING GUIDE ........60 INDIVIDUAL SOLENOID COIL TEST ............68 ELECTRICAL TESTING ................60 CONTROL/CABLE/SNOWPLOW MODULE TEST ........69 BEFORE YOU BEGIN ..................61 MOTOR AND MOTOR RELAY TEST ............70 HEADLAMP TROUBLESHOOTING .............62 PUMP PRESSURE TEST ................71...

  • Page 60: Troubleshooting Guide

    Read and understand the electrical Because of the relative complexity of 3. If you're still having problems or HTS™ snowplow can be categorized circuit operation information in the the snowplow electrical and hydraulic the problem is not related to the as structural, electrical, or hydraulic.

  • Page 61: Before You Begin

    TROUBLESHOOTING GUIDE BEFORE YOU BEGIN Before proceeding, or performing any tests, you must verify the following conditions: 1. Verify that the customer has c. The control is connected g. Hydraulic reservoir is CAUTION accurately and completely in the cab and turned ON. fi...

  • Page 62: Headlamp Troubleshooting

    TROUBLESHOOTING GUIDE VEHICLE HEADLAMPS Incorrect Operation or No Headlamps SOLUTIONS BASIC CHECK QUESTIONS DRL mode/automatic headlamp function Fully understand OEM headlamp operation; refer to vehicle owner's manual. Correct isolation module kit installed for application Verify per Quick Match at www.westernplows.com. OEM lights operating correctly prior to installation OEM headlamps must be fully operational for correct isolation module operation.

  • Page 63: Snowplow Headlamps

    TROUBLESHOOTING GUIDE SNOWPLOW HEADLAMPS Incorrect Operation or No Headlamps BASIC CHECK QUESTIONS SOLUTIONS DRL mode/automatic headlamp function correctly Fully understand OEM headlamp operation; refer to vehicle owner's manual. Harnesses connected between vehicle and snowplow (all) Harnesses must be connected for all snowplow and headlamp functions. Harness connectors clean / not corroded Replace as needed.

  • Page 64: Snowplow Park/Turn Lamps

    TROUBLESHOOTING GUIDE SNOWPLOW PARK/TURN LAMPS* Incorrect Operation or No Park/Turn Lamps BASIC CHECK QUESTIONS SOLUTIONS OEM park/turn lamps working Refer to vehicle owner's manual for fuse location and size. Harnesses connected between vehicle and snowplow (all) Harnesses must be connected for all snowplow and headlamp functions. Clean harness connectors Replace as needed.

  • Page 65: Snowplow Drls

    TROUBLESHOOTING GUIDE SNOWPLOW DRL LAMPS* Incorrect Operation or No DRL Lamps BASIC CHECK QUESTIONS SOLUTIONS Fully understand OEM DRL operation Refer to vehicle owner's manual for DRL operation. OEM headlamps and DRLs operating correctly OEM headlamps must be fully operational for correct isolation module operation. OEM DRL fuse tests good Refer to vehicle owner's manual for fuse location and size.

  • Page 66: Solenoid Coil Activation Test (Scat)

    SOLENOID COIL ACTIVATION TEST (SCAT) Harness B Solenoid Coil Connections 4. Compare the SCAT results NOTE: See the System with the testing charts on the Overview – HTS™ Controls following pages. section for details on control time outs and wing functions. Lift Ram...
  • Page 67 TROUBLESHOOTING GUIDE SOLENOID COIL ACTIVATION TEST (SCAT) 2. Unplug the snowplow connectors 5. Connect the snowplow control into Solenoid Coil Activation NOTE: This MUX-plow diagnostic from ports A and B of the plow the 4-position control connector Test (SCAT) Chart harness kit can be used with module.

  • Page 68: Individual Solenoid Coil Test

    TROUBLESHOOTING GUIDE SOLENOID COIL ACTIVATION TEST (SCAT) INDIVIDUAL SOLENOID COIL TEST Off -Truck Testing 4. Plug the connectors removed Solenoid Coil Activation from the plow module into the 1. Remove both wires from coil Test (SCAT) Chart matching connectors on the 1.

  • Page 69: Control/Cable/Snowplow Module Test

    TROUBLESHOOTING GUIDE CONTROL/CABLE/PLOW MODULE TEST CONDITION POSSIBLE CAUSE CORRECTIVE ACTION Snowplow is not connected • Make sure grille plugs between snowplow and truck are properly connected. • With the vehicle switched accessory ON, test the 4-pin connector inside the cab. If pin 1 does not have 12V and/or if pin 4 does not have ground, use the electrical schematic in this guide to trace the wires from the Incomplete harness connection(s) or damaged harness(es)

  • Page 70: Motor And Motor Relay Test

    TROUBLESHOOTING GUIDE MOTOR AND MOTOR RELAY TEST 3. Check for 12V at the small 4. If 12V is present at the small black wire in harness B of the WARNING terminal of the motor relay with the relay terminal with the red wire, plow module.

  • Page 71: Pump Pressure Test

    TROUBLESHOOTING GUIDE PUMP PRESSURE TEST 3. Attach a 3000 psi hydraulic POSSIBLE CONDITION CORRECTIVE ACTION pressure gauge to the PS ram by CAUSE teeing into the line. WARNING Pump relief valve may be out of adjustment. Turn relief valve clockwise Keep 8' clear of the blade when 4.

  • Page 72: Blade Drop Speed Adjustment

    TROUBLESHOOTING GUIDE BLADE DROP SPEED Fluid Level ADJUSTMENT With UltraMount ® system attached to the vehicle, activate control and WARNING lower the blade to the ground. Turn Keep 8' clear of the blade control OFF. Remove the breather/fi ll when it is being raised, plug.

  • Page 73: Scrape Lock Adjustment

    TROUBLESHOOTING GUIDE SCRAPE LOCK ADJUSTMENT 9. While pressing the RAISE button 12. Once the recommended on the snowplow control, note pressure is obtained, lower the Pressure the hydraulic gauge pressure blade completely and turn the Gauge reading as the blade is rising. control OFF.

  • Page 74: Pilot-Operated (Poppet Style) Check Valve Inspection

    PILOT-OPERATED (POPPET STYLE) CHECK VALVE INSPECTION 1. Remove O-ring boss plug, spring, and poppet. 2. Remove O-ring boss plug, spring, and spool with O-ring. Use long/slender needle-nosed pliers to remove spool. O-Ring Boss Plug 3. Inspect springs, poppet, spool, Spring O-rings, and poppet seat for wear, damage, or contamination.

  • Page 75: Relief Valve Inspection And Adjustment

    RELIEF VALVE INSPECTION AND ADJUSTMENT Relief Valve Inspection Adjustment Hydraulic System 1. Remove the valve stem, ball, CAUTION Relief Valve No. of Turns Approximate Relief spacer, and spring. Backed Off (CCW) Valve Pressure Do not adjust relief valve while From Fully Seated ±...
  • Page 76 Western Products. Authorization to photocopy items for internal or personal use by Western Products outlets or snowplow owner is granted. Western Products reserves the right under its product improvement policy to change construction or design details and furnish equipment when so altered without reference to illustrations or specifi cations used.

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