SERVICE SCHOOL - PDF Free Download

2012 SERVICE SCHOOL 1

Technical Service Team Chad Barker Chad joined Douglas Dynamics, LLC in 1993 as an engineering designer in the Innovation Department. In September 2010, he moved to the Technical Service Department. Chad has an associate s degree in mechanical design and is currently attending classes at the Milwaukee School of Engineering to complete his bachelor of science degree in mechanical engineering. Chad lives in Trevor, Wisconsin with his wife Sue. He enjoys hunting, fishing, and camping. Brian Kaat Brian has been working in the Technical Service Department for Douglas Dynamics, LLC since 1999. He graduated from the University of Wisconsin-Milwaukee with a bachelor s degree in marketing and human resource management. He currently lives in Sheboygan, Wisconsin with his wife Beth, and daughter Nikki. For recreation he enjoys fishing for trout and salmon (just started fly fishing), attempting to golf and (formerly) riding motocross bikes. John Frelich John has been working in the Technical Service Department for Douglas Dynamics, LLC since 2011. He studied agriculture business marketing and communications at the University of Wisconsin-Platteville. He has experience in the pump industry as a service technician and engineer and years of experience in turf research and development. John lives in Muskego, Wisconsin with his wife Brittany. He enjoys recreational motorsports including snowmobiling and 4-wheeling, hunting, and physical training. Andy Maas Andy has been working in the Technical Service Department for Douglas Dynamics, LLC since 2010. He attended Moraine Park Technical College were he studied residential and commercial electrical wiring. He was previously employed for eight years in the snowplow industry as a tech service manager and warranty claims administrator. Andy lives in Lomira, Wisconsin with his wife Rachel and sons James, Jayson, Joel, and Jakob. He enjoys hunting, boating, camping, riding ATVs, and anything that involves spending time with his family. Jeff DeRuyter Jeff joined Douglas Dynamics, LLC in 2010 employed in the shipping department. In 2011, he moved to the Technical Service Department. He is currently attending Milwaukee Area Technical College to complete his associate s degree in mechanical design. Jeff lives in Cedar Grove, Wisconsin with his wife Kim and daughters Kaylee and Alexis. In his free time Jeff owns and runs a midsized cash crop and angus beef farm. He enjoys camping, duck, goose, and bow hunting, and very limited success fishing. 2

2012 BLIZZARD Service School Topics of Discussion Page # What s New..7 15 Isolation Module Electrical Systems..16 22 Vehicle-Side Electrical...23 37 Plow-Side Electrical...38 59 Electrical Hands-On to Follow Intro. To Hydraulic Systems...60 61 Hydraulics Hands-On to Follow POWER HITCH 2 Straight Blade.......62 71 POWER HITCH 2 SPEEDWING......72 76 POWER HITCH 2 POWER PLOW........77 85 POWER HITCH......86 103 Hopper Spreaders & Tailgate Spreaders... 104 109 Reference Material......110 121 Service Tools.. 122 125 NOTE: This manual is for educational and training purposes only. The instructions and texts contained are excerpts taken from literature packed with BLIZZARD products at the time this document was compiled. This material is not complete and may no longer be current. Please refer to the literature packed with products for full instructions and safety information. Complete and up-to-date literature is also available on the Internet at www.blizzardplows.com or from the Blizzard Customer Service Department. 3

2012 BLIZZARD Service School Safety Definitions Excerpts Taken LIT NO. 49587, Rev. 01 4

2012 BLIZZARD Service School Examples of Safety Information Excerpts Taken LIT NO. 49587, Rev. 01 5

2012 BLIZZARD Service School Excerpts Taken LIT NO. 29606, Rev. 10 6

What s New - SPEEDWING Blade Wing Assembly - Strengthened hinge and torque box Cutting Edge - Adjustable cutting edge to increase the cutting edge life. Straight Forward Design Less Likely To Develop Issues Adjustment Bolt Hole 7

What s New - SPEEDWING Blade - Easier To Service - Reduces the Chance of Cable Entrapment Cable Assembly New Moldboard Base New Attachment Point New Spring and Cable Design Easy To Remove With No Special Tools 8

What s New - SPEEDWING Blade New Part Numbers and Accessories Cutting Edge, Moldboard PN 49799 Cutting Edge Wing PN 42383 Snow Deflector PN 42384 Back Drag Edge (NEW!) PN 42382 9

What s New - Intermittent Relay on FLEET FLEX System Used on FLEET FLEX system equipped snowplows Operates at a lower voltage DO NOT use continuous-duty relay on FLEET FLEX system plows Increases internal heat Decreasing the life of the controller DO NOT use intermittent-duty relay on non FLEET FLEX Plows Why does FLEET FLEX system durability improve with the intermittent-duty relay? These products have a longer cable distance between the vehicle battery and the relay, leading to an increased voltage drop. The intermittent-duty relay has a greater voltage range, allowing it to operate at lower voltage levels. 42903 B80051 Excerpts Taken From TSB-035 FLEET FLEX System POWERHITCH TM System 10

FLEET FLEX System Control Features 11

What s New - Training Room Videos Truck Side Wiring Installation Pump Shaft Seal Replacement SPEEDWING TM Wing Tool Gland Nut Replacement SCAT Test Hydraulic Training Modules (Automation Studio) Introduction to Hydraulics POWER PLOW TM Hydraulics Excerpts Taken From 2012 Pre-Season What s New 12

What s New - BLIZZARD LP-10 Tailgate Spreader Added a 3-Flight Auger Below the Adjustable Feed Gates Advantages - Auger prevents the free-flow of material, even when the feed gates are left open Improvement Upgrades 1. New Motor Mounting Plate Bracing was added to the base plate 2. Base Plate & Feed Gates Were Upgraded Poly to powder coated stainless steel to improve stability 3. Improved Deflector Design Poly tab deflector adjustment to a thumb screw/knob design 4. Modified the Frame Work Standard 3-Flight (5-Flight Available) Stainless Steel Sleeve Encasing Auger Excerpts Taken From 2012 Pre-Season What s New 13

What s New - Warranty Required Information Information That Is Required: Serial # Hydraulic Unit Blade Date of Purchase Copy of Bill of Sale Primary Failed Part (PFP) Example: Weld failure on quadrant causing the angle ram to fracture. Vehicle Information Manufacture, Year, Model A Clear Explanation of the Problem Part Return Pictures (If Applicable) Benefits Corrective Action Taken During Manufacturing and Inspection Process 14

What s New - Poly Hopper Improvements Product Enhancements Made to the ICE CHASER TM Spinner/Chute Assembly: Increase motor shaft diameter from 5/16" to 1/2" (5/16" Motor PN 78299) Added a belt tensioning idler pulley Relocated the large 40-tooth pulley from below the motor plate to above Added a new motor/pulley cover 1/2 Spinner Motor Service Kit (PN 78300) Contains: 1/2" motor & new 10- tooth cogged pulley Warranty Claims Fix as Fails *See Service Bulletin TSB-037* Excerpts Taken From TSB-037 15

BLIZZARD Service School 2012 Service Training Program Isolation Module Electrical Systems 16

Electrical Legend Excerpts Taken From LIT NO. 22373, Rev. 07 17

Wiring Diagram (FLEET FLEX) 2-Plug System Isolation Module Mounted on Passenger Side. (Headlights Will Cross Feed To Module) Green Wires Excerpts Taken From LIT NO. 63562, Rev. 12 Blue Wires 18

Electrical Schematic (FLEET FLEX) 2-Plug System Communication Wires Blue Wires Ground Loop Green Wires Excerpts Taken From LIT NO. 48379, Rev. 02 19

Isolation Module Models 29070-1 (Green Label) Used on DRL and non DRL vehicles 29760-1 (Blue Label) According to the vehicle manufacturer all 2008 Ford Super Duty F-250/350/450/550 trucks built before 04/18/2007 will require this module. Trucks built after that date with the snowplow prep package use the 29070-1 (Green Label Module) * Isolation Module acts as an electrical hub. Automatically directing vehicle power to the snowplow. 20

Headlamp Index Excerpts Taken From LIT NO. 22373, Rev. 07 21

Headlamp Configurations Reversible 2-Position Connector HB-3 / HB-4 (29048 Harness Kit) HB-3 / H11 (29400-5 Harness Kit) - Negative/Positive Common? HB-1 / HB-5 Headlamp Connector 29050 Harness Kit Pre-Configured for HB-5 Headlamps Pins need to be re-located for HB-1 Headlamps Symptom: High beam indicator on all the time, dim low beam headlamps 22

BLIZZARD Service School 2012 Service Training Program Vehicle-Side Electrical 23

Current Conditions *Plow Disconnected* - Ground is Constant Lighting Circuit Added Condition & Result Added Condition & Result Vehicle Low Beam Out Vehicle Low Beam In Plow Low Beam Out Truck Light Truck Light Plow Light Plow Light 24

Current Conditions *Plow Disconnected* - Ground is Constant - Module/Control Power In Lighting Circuit Added Condition & Result Added Condition & Result Vehicle Low Beam Out Vehicle Low Beam In Plow Low Beam Out Truck Light Truck Light Plow Light Plow Light 25

Current Conditions *Plow Disconnected* - Ground is Constant - Module/Control Power In 1 Lighting Circuit Added Condition & Result Park Lights Active Added Condition & Result Vehicle Low Beam Out Vehicle Low Beam In Plow Low Beam Out Truck Light 1 Truck Light Plow Light Plow Light 26

Current Conditions *Plow Disconnected* - Ground is Constant - Module/Control Power In 1 2 Lighting Circuit Added Condition & Result Park Lights Active Low Beams Turned ON Added Condition & Result 2 Vehicle Low Beam Out Vehicle Low Beam In Plow Low Beam Out Truck Light 1 Truck Light Plow Light Plow Light 27

Current Conditions *Plow Disconnected* - Ground is Constant - Module/Control Power In 1 2 3 Lighting Circuit Added Condition & Result Park Lights Active Low Beams Turned ON Truck Lamps Turn On Added Condition & Result 3 2 Vehicle Low Beam Out Vehicle Low Beam In Plow Low Beam Out Truck Light 1 Truck Light Plow Light Plow Light 28

Current Conditions *Plow Disconnected* - Ground is Constant - Module/Control Power In 1 2 3 Lighting Circuit Added Condition & Result Park Lights Active Low Beams Turned ON 4 Truck Lamps Turn On Added Condition & Result *Plow Connected* Ground Path Completes to Vehicle Module 3 2 Vehicle Low Beam Out Vehicle Low Beam In Plow Low Beam Out Truck Light 1 Truck Light Plow Light 4 Plow Light 29

Current Conditions *Plow Disconnected* - Ground is Constant - Module/Control Power In 1 2 3 Lighting Circuit Added Condition & Result Park Lights Active Low Beams Turned ON 4 Truck Lamps Turn On 5 Added Condition & Result *Plow Connected* Ground Path Completes to Vehicle Module Park Lamps Active on Plow 3 2 Vehicle Low Beam Out Vehicle Low Beam In Plow Low Beam Out Truck Light 1 Truck Light Plow Light 5 4 Plow Light 30

Current Conditions *Plow Disconnected* - Ground is Constant - Module/Control Power In 1 2 3 Lighting Circuit Added Condition & Result Park Lights Active Low Beams Turned ON 4 5 Truck Lamps Turn On 6 Added Condition & Result *Plow Connected* Ground Path Completes to Vehicle Module Park Lamps Active on Plow Truck Lamps Transfer to Plow 3 2 Vehicle Low Beam Out Vehicle Low Beam In Plow Low Beam Out Truck Light 6 1 Truck Light Plow Light 5 4 Plow Light 31

Current Conditions *Plow Disconnected* - Ground is Constant Control Circuit Result Added Condition & Result 32

Current Conditions *Plow Disconnected* - Ground is Constant - Module/Control Power In Control Circuit Result Added Condition & Result 33

Current Conditions *Plow Disconnected* - Ground is Constant - Module/Control Power In X X Control Circuit Result Ground Not Complete Back to Vehicle Module Control Not Active. No Switched Accessory 1 Added Condition & Result *Plow Connected* Ground Path Completes to Vehicle Module X X 1 35

Current Conditions *Plow Disconnected* - Ground is Constant - Module/Control Power In X X Control Circuit Result Ground Not Complete Back to Vehicle Module Control Not Active. No Switched Accessory 1 2 Added Condition & Result *Plow Connected* Ground Path Completes to Vehicle Module Switched Accessory Active to Vehicle Module 2 X 1 36

Current Conditions *Plow Disconnected* - Ground is Constant - Module/Control Power In X X Control Circuit Result Ground Not Complete Back to Vehicle Module Control Not Active. No Switched Accessory 2 1 2 3 Added Condition & Result *Plow Connected* Ground Path Completes to Vehicle Module Switched Accessory Active to Vehicle Module Module Transfers Power to Control *Back Light on Control Illuminates* 3 1 37

BLIZZARD Service School 2012 Service Training Program Plow-Side Electrical 38

Electrical Connectors (FLEET FLEX) 2-Plug System Check Voltage/Ground in Control Harness and Battery Cable Check Signal Wire for Continuity in Cables POWER Switch in OFF position will show a slow blinking red light on control. Excerpts Taken From LIT NO. 22373 39

Electrical Connectors (FLEET FLEX) 2-Plug System POWER SWITCH ARM/BLADE SWITCH Excerpts Taken From LIT NO. 40690, Rev. 02 40

POWER HITCH 2 Switch Circuit Plowing Position *Plow Plugs Connected* - Ground is Constant to Power Switch - Power Switch in OFF Position Attach Detach Raise ARM/BLADE SWITCH Slow Blinking Light OFF To Plow Motor Lower Plowing POWER SWITCH Black Orange OFF Black Arm/Blade Operation Mount Adapter To Plow Module Port B Draw Latch 41

POWER HITCH 2 Switch Circuit Plowing Position *Plow Plugs Connected* - Ground is Constant to Power Switch Attach Detach 1 Power Switch in Plowing Position. Raise ARM/BLADE SWITCH Solid Red Light OFF To Plow Motor 1 Lower Plowing POWER SWITCH Black Orange OFF Black Arm/Blade Operation Mount Adapter To Plow Module Port B Draw Latch 42

POWER HITCH 2 Switch Circuit Plowing Position Attach Detach *Plow Plugs Connected* Control is Plugged In & Turned OFF - Ground is Constant to Power Switch 1 Move Power Switch to Arm/Blade Operation 2 Move Arm/Blade Switch to RAISE Position to Engage Draw Latch 2 Raise ARM/BLADE SWITCH OFF To Plow Motor Lower Plowing POWER SWITCH Black Orange OFF Black Arm/Blade Operation 1 Mount Adapter To Plow Module Port B Draw Latch 43

POWER HITCH 2 Switch Circuit Plowing Position Attach Detach *Plow Plugs Connected* Control is Plugged In & Turned OFF - Ground is Constant to Power Switch 1 Move Power Switch to Arm/Blade Operation 2 Move Arm/Blade Switch to LOWER Position to Disengage Draw Latch Raise ARM/BLADE SWITCH OFF To Plow Motor 2 Lower Plowing POWER SWITCH Black Orange OFF Black Arm/Blade Operation 1 Mount Adapter To Plow Module Port B Draw Latch 44

1 Conditions *Plow is Connected* 2-Plug Straight Blade Plow Electrical Ground is Complete to Vehicle Module, Plow Module, Control, and Plow Switches. (POWER Switch in PLOW mode) Added Conditions & Results 1 To Plow Lights Ground 45

1 2 Conditions *Plow is Connected* 2-Plug Straight Blade Plow Electrical Ground is Complete to Vehicle Module, Plow Module, Control, and Plow Switches. (POWER Switch in PLOW mode) Power from Battery to Plow Side & to Vehicle Module 3 4 Added Conditions & Results Switched Accessory Active to Vehicle Module Power from battery transferred from module to Control. 1 2 4 3 To Plow Lights Ground 48

1 2 Conditions *Plow is Connected* 2-Plug Straight Blade Plow Electrical Ground is Complete to Vehicle Module, Plow Module, Control, and Plow Switches. (POWER Switch in PLOW mode) Power from Battery to Plow Side & to Vehicle Module 5 3 4 5 Added Conditions & Results Switched Accessory Active to Vehicle Module Power from battery transferred from module to Control. Power to Control 1 2 4 3 To Plow Lights Ground 49

1 2 Conditions *Plow is Connected* 2-Plug Straight Blade Plow Electrical Ground is Complete to Vehicle Module, Plow Module, Control, and Plow Switches. (POWER Switch in PLOW mode) Power from Battery to Plow Side & to Vehicle Module 5 3 4 5 6 Added Conditions & Results Switched Accessory Active to Vehicle Module Power from battery transferred from module to Control. Power to Control RAISE Signal Sent to Plow Module to Complete Ground Path to Motor Relay, Activating Cartridge Valve S2(C1) Top, Raising the Plow. 1 2 4 3 6 To Plow Lights Ground 50

2-Plug Straight Blade Plow Electrical Classroom Exercise Plow Functions: Lower Angle Right Angle Left 51

1 2 Conditions *Plow is Connected* 2-Plug Straight Blade Plow Electrical Ground is Complete to Vehicle Module, Plow Module, Control, and Plow Switches. (POWER Switch in PLOW mode) Power from Battery to Plow Side & to Vehicle Module 3 4 5 6 Added Conditions & Results Switched Accessory Active to Vehicle Module Power from battery transferred from module to Control. Power to Control LOWER Signal Sent to Plow Module, Activating Cartridge Valve S1, Lowering the Plow. To Plow Lights Ground 52

1 2 Conditions *Plow is Connected* 2-Plug Straight Blade Plow Electrical Ground is Complete to Vehicle Module, Plow Module, Control, and Plow Switches. (POWER Switch in PLOW mode) Power from Battery to Plow Side & to Vehicle Module 3 4 5 6 Added Conditions & Results Switched Accessory Active to Vehicle Module Power from battery transferred from module to Control. Power to Control RIGHT Signal Sent to Plow Module to Complete Ground Path to Motor Relay, Activating Cartridge Valve S3(C2) Bottom, Angling the Plow. To Plow Lights Ground 53

1 2 Conditions *Plow is Connected* 2-Plug Straight Blade Plow Electrical Ground is Complete to Vehicle Module, Plow Module, Control, and Plow Switches. (POWER Switch in PLOW mode) Power from Battery to Plow Side & to Vehicle Module 3 4 5 6 Added Conditions & Results Switched Accessory Active to Vehicle Module Power from battery transferred from module to Control. Power to Control LEFT Signal Sent to Plow Module to Complete Ground Path to Motor Relay, Activating Cartridge Valve S3(C1) Top, Angling the Plow. To Plow Lights Ground 54

Port C C - Switched Vehicle Accessory In F - Module Power In Port B C - Control Power Out F - Control Power In Key Pin Locations Measure Voltage With a Multi- Meter/Volt Meter (DO NOT Probe Wire!) 12-Volts Port A C-Module Ground In (Check Continuity) 55

SCAT Test Solenoid Coil Activation Test (SCAT) - Eliminate Electrical Problem Double Stacked Coils Need to be Tested Individually Tools Needed: Screwdriver Continuity Tester (Multi-Meter) SCAT Test Demonstration 56

Diagnostic Harness Kit PN 29290-1 *This diagnostic harness kit can be used with or without the snowplow connected to a vehicle* 1. Unplug the snowplow connectors from Ports A and B of the Plow Module. 2. Connect the diagnostic harness connectors A and B to the matching ports on the Plow Module (A to A and B to B). 3. Connect the snowplow control into the 4-position control connector either in the cab of the vehicle or on the diagnostic harness. Excerpts Taken From LIT NO. 29289, Rev. 03 57

Hands On Guidelines 1. Safety glasses must be worn when working on Plow Stands. 2. Use rags to cover ports when removing components/fittings. 3. Wipe up hydraulic fluid spills ASAP. 4. Tool kits are by each Plow Stand. 5. Use test meters to check electrical connections Do Not probe wires. 6. Turn off headlamps and control power when not in use. 7. Diagnostic test harnesses provided in each tool kit. 8. Plow Stands may have more than 1 problem. 9. There are several hydraulic fluid containers for topping off hydraulic units. 10. No more than 3 people per station. 11. Return problems to the Plow Stands when finished. 58

BLIZZARD Service School 2012 Service Training Program Electrical Hands-On 59

BLIZZARD Service School 2012 Service Training Program Hydraulic Systems 60

Hydraulic Legend Intro. To Hydraulics 61

BLIZZARD Service School 2012 Service Training Program POWER HITCH 2 Straight Blade 62

POWER HITCH 2 Straight Blade Excerpts Taken From LIT NO. 48290, Rev. 03 3 Solenoid Cartridge Valves 5 Coils 1 Crossover Relief Valve (HD) 2 Angle Relief Valves (LT) 1- Blade Drop Adjustment 63

POWER HITCH 2 LT Straight Blade Excerpts Taken From LIT NO. 48290, Rev. 03 64

POWER HITCH 2 HD Straight Blade Excerpts Taken From LIT NO. 48290, Rev. 03 65

POWER HITCH 2 Straight Blade Similar looking valves, different porting Excerpts Taken From LIT NO. 40595, Rev. 04 66

POWER HITCH 2 Straight Blade Excerpts Taken From LIT NO. 48379, Rev. 02 Automation Studio 67

POWER HITCH 2 Straight Blade Classroom Exercise Plow Functions: Lower Angle Right Angle Left 68

POWER HITCH 2 Straight Blade Excerpts Taken From LIT NO. 48379, Rev. 02 69

POWER HITCH 2 Straight Blade Excerpts Taken From LIT NO. 48379, Rev. 02 70

POWER HITCH 2 Straight Blade Excerpts Taken From LIT NO. 48379, Rev. 02 71

BLIZZARD Service School 2012 Service Training Program POWER HITCH 2 SPEEDWING Blade 72

POWER HITCH 2 SPEEDWING Blade 3 Solenoid Cartridge Valves 5 Coils 1 Crossover Relief 2 - Counter Balance Valves Excerpts Taken From LIT NO. 48486, Rev. 01 73

POWER HITCH 2 SPEEDWING Blade Excerpts Taken From LIT NO. 48486, Rev. 01 74

POWER HITCH 2 SPEEDWING Blade Similar looking valves, different porting Excerpts Taken From LIT NO. 40688, Rev. 01 75

POWER HITCH 2 SPEEDWING Blade Counter Balance Valves Offset the Wing Spring Load on the Hydraulic System Excerpts Taken From LIT NO. 48379, Rev. 02 76

BLIZZARD Service School 2012 Service Training Program POWER HITCH 2 POWER PLOW Blade 77

POWER HITCH 2 POWER PLOW Blade 9 Solenoid Cartridge Valves 9 Coils 4 Check Valves 4- Wing Relief Valves Excerpts Taken From LIT NO. 48483, Rev. 01 78

POWER HITCH 2 POWER PLOW Blade Orifice Plates allow free flow in one direction and restrict flow in the opposite direction (Eliminates Wing Chatter During Retract Function) Excerpts Taken From LIT NO. 48483, Rev. 01 79

POWER HITCH 2 POWER PLOW Blade SV08-45 vs. SV08-41 Similar looking valves, different porting. Symptom Angle functions opposite Excerpts Taken From LIT NO. 40691, Rev. 02 80

POWER HITCH 2 POWER PLOW Blade Excerpts Taken From LIT NO. 48379, Rev. 02 Automation Studio 81

POWER HITCH 2 POWER PLOW Blade Classroom Exercise Plow Functions: Raise Driver Side Wing 82

POWER HITCH 2 POWER PLOW Blade Excerpts Taken From LIT NO. 48379, Rev. 02 83

POWER HITCH 2 POWER PLOW Blade Excerpts Taken From LIT NO. 48379, Rev. 02 84

POWER HITCH 2 POWER PLOW Blade Excerpts Taken From LIT NO. 48379, Rev. 02 85

BLIZZARD Service School 2012 Service Training Program POWER HITCH System 86

POWER HITCH 680LT & 720LT 5 Solenoid Cartridge Valves 5 Coils 1 Angle Relief Valve Excerpts Taken From LIT NO. B64118, Rev. 06 87

POWER HITCH 680LT & 720LT 88

POWER HITCH 680LT & 720LT Excerpts Taken From LIT NO. B64118, Rev. 06 89

POWER HITCH 680LT & 720LT Excerpts Taken From LIT NO. B64118, Rev. 06 90

POWER HITCH 810 & 8611 POWER PLOW Blades 9 Solenoid Cartridge Valves 9 Coils 4 Check Valves 4- Wing Relief Valves 1- Angle Relief Valve Excerpts Taken From LIT NO. B64089, Rev. 10 91

POWER HITCH 810 & 8611 POWER PLOW Blades 92

POWER HITCH 810 & 8611 POWER PLOW Blades Excerpts Taken From LIT NO. B64089, Rev. 10 93

POWER HITCH 810 & 8611 POWER PLOW Blades Excerpts Taken From LIT NO. B64089, Rev. 10 94

POWER HITCH Valve Reference 95

POWER HITCH Valve Reference 96

POWER HITCH System Electrical PN B62150 Vehicle Side Harness (2004-Current) Excerpts Taken From LIT NO. 48379, Rev. 02 97

POWER HITCH System Electrical PN B62150 Vehicle Side Harness (2004-Current) Excerpts Taken From LIT NO. 48379, Rev. 02 98

POWER HITCH System Electrical PN B62039 Plow Side Harness (2004-Current) Excerpts Taken From LIT NO. 48379, Rev. 02 99

POWER HITCH System Electrical PN B62039 Plow Side Harness (2004-Current) Excerpts Taken From LIT NO. 48379, Rev. 02 100

Cartridge Valve Damage 101

BLIZZARD Service School 2012 Service Training Program Hydraulic Hands-On 103

BLIZZARD Service School 2012 Service Training Program Spreaders 104

BLIZZARD Service School 2012 Service Training Program Hopper Spreaders ICE CHASER 105

BLIZZARD ICE CHASER Hopper Spreader Excerpts Taken From LIT NO. 63562, Rev. 12 106

BLIZZARD ICE CHASER Hopper Spreader Excerpts Taken From LIT NO. 94211, Rev. 00 107

BLIZZARD ICE CHASER Hopper Spreader PN 78102 Excerpts Taken From LIT NO. 94189 108

Low-Profile Tailgate Spreader LP-8 LP-10 *Auger Options* 3-Flight (Standard) 5-Flight 109

BLIZZARD Service School 2012 Service Training Program Reference Material 110

POWER HITCH System Electrical A B PN B62215 Includes A & B Harnesses Excerpts Taken From LIT NO. 48379, Rev. 02 111

POWER HITCH System Electrical OLD Style Plug NEW Style Plug Excerpts Taken From LIT NO. 48379, Rev. 02 112

POWER HITCH System Electrical PN B62212 Excerpts Taken From LIT NO. 48379, Rev. 02 113

POWER HITCH System Electrical PN B62212 Main Lighting Harness (2005) Excerpts Taken From LIT NO. 48379, Rev. 02 114

POWER HITCH System Electrical PN B29760-1 (2008-09 FORD SD ONLY) Excerpts Taken From LIT NO. 48379, Rev. 02 115

POWER HITCH System Electrical PN B29760-1 (2008-09 FORD SD ONLY) Excerpts Taken From LIT NO. 48379, Rev. 02 116

POWER HITCH System Electrical PN 29453 Main Lighting Harness (2007-Newer Chevy and Toyota) Excerpts Taken From LIT NO. 48379, Rev. 02 117

Headlamp Extension Bracket Excerpts Taken From LIT NO. 48379, Rev. 02 118

STORM SEEKER TM Headlamp Adapter PN 29033 Excerpts Taken From LIT NO. 48379, Rev. 02 119

Cutting Edge Reference Excerpts Taken From LIT NO. 48379, Rev. 02 120

Cylinder Reference Excerpts Taken From LIT NO. 48379, Rev. 02 121

BLIZZARD Service School 2012 Service Training Program Service Tools 122

Service Tools Requires 3/8-24 x 4 bolt to service POWERPLOW Requires 1/4-28 x 4-1/2 bolt to service POWERPLOW 123

SPEEDWING Spring Tool Spring Tool Demonstration 124

Service & Test Tools 125

Copyright 2012 Douglas Dynamics, L.L.C. All rights reserved. This material may not be reproduced or copied, in whole or in part, in any printed, mechanical, electronic, film or other distribution and storage media, without the written consent of Blizzard. Authorization to photocopy items for internal or personal use by Blizzard outlets or snowplow owner is granted. Blizzard 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 specifications used. Blizzard or the vehicle manufacturer may require or recommend optional equipment for snow removal/spreaders. Do not exceed vehicle ratings with a snowplow/spreader. Blizzard offers a limited warranty for all snowplows/spreaders and accessories. See separately printed page for this important information. The following are registered ( ) or unregistered ( ) trademarks of Douglas Dynamics, L.L.C.: BLIZZARD, BLIZZARD POWER PLOW, BUCKET BLADE, ICE CHASER, POWER GRIP, POWER HITCH, POWER HITCH 2, POWER PLOW, SECURITY GUARD, SPEEDWING, STORM SEEKER. 126