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Summary of Contents for Sno-Way 28V Series
- Page 1 OWNER’S MANUAL 28V SERIES SNOW PLOW WITH EIS FOR PLOW SERIAL NUMBERS AFTER 28VG100100 28VD100302 ©2006 Sno-Way® International 97101116C...
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Page 2: Table Of Contents
TABLE OF CONTENTS Page INTRODUCTION ......................2 SAFETY ........................3 THEORY OF OPERATION..................4 Hydraulic Power Unit ..................4 Hydraulic Controls.................... 4 Electro-Hydraulic Controls ................4 Raise Mode of Operation .................. 4 Lower Mode of Operation - Gravity Down and Float ........4 Lower Mode of Operation - Down Pressure (DP) System ...... -
Page 3: Introduction
Sno-Way Service Parts Manuals are available for where in this manual. purchase from your authorized Sno-Way dealer. Request part number 97100973 for the 28V Series Snow Plows. BE AWARE! It is illegal to remove, deface or other- Factory contact... -
Page 4: Safety
The unit, or any part of it should not be begins. New decals can be obtained from Sno-Way or altered without prior written approval of the manufacturer. your local dealer. -
Page 5: Theory Of Operation
THEORY OF OPERATION Hydraulic Power Unit Raise Mode of Operation The hydraulic power unit consists of: Actuating the ’Raise’ switch on the hand-held controller sends a signal to the control circuit board on the plow 12VDC Motor which then actuates the motor solenoid and the coils for Hydraulic pump rated at 1.54 GPM @ 1500 PSI the ’C’... -
Page 6: Wing Angling Mode Of Operation Independent Wing Angling
The down pressure system is overridden any time the Circuit Breaker plow control is placed in the ’Raise’ mode, but will resume when placed back into the ’Lower’ position. A 150 Amp circuit breaker is located near the battery in the primary 12VDC positive power circuit and is in place Also, note that the ’E’... -
Page 7: Plowing Operation
10. If ballast is required position ballast behind rear Operating Classes wheels for optimum performance. 28V Series The 28V Series Sno-Way plow is specifically designed for Transporting Vehicle With heavy duty snow plowing with full size 3/4 and 1 ton 4x4’s. Blade Attached... -
Page 8: Plowing Like A Pro
6. Position the blade out of the beam path of the 2. Plow with the storm. The “Pros” are out early headlights before driving. removing only several inches of snow at a time. Allowing snow to accumulate to unmanageable levels can cause 7. -
Page 9: Mounting Snow Plow To Vehicle
4. If the snow plowed to the edge of the path is too large to push the entire pile to the edge of the lot, fill the blade, in “scoop” position, and then push the pile over into the cleared path and then to the edge of the lot. Then return, WARNING and with the blade in “scoop”... - Page 10 PIN HANDLE DOWN UPPER HITCH PIN PIN WILL DROP PIN HANDLE INTO SLOT DOWN Figure 1-2 Figure 1-3 5. Unplug plow from control. NOTE: If your plow is not equipped with down pressure hydraulics you will have to manually rotate the light lift bar 6.
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Page 11: Installing The Cylinder Lock Clamp
Installing The Cylinder Lock Clamp TRUCK LIGHT HARNESS CONNECTORS WARNING Always install the cylinder lock clamp when the PLOW LIGHT plow blade is raised and the operator is not CONNECTORS engaged in plowing operations. Equipment failure or inadvertent operation of the plow control while driving could allow the plow blade to fall, resulting in injury. -
Page 12: Removing Snow Plow From Vehicle
Removing Snow Plow From Vehicle Choose a location for the plow storage, which will allow the plow to be removed from the vehicle and not be WARNING moved after removal. Also, choose a location that will not allow the plow stand to sink into the ground. A dry, protected area is recommended. -
Page 13: Plow Storage
7. Disengage lower jack stand pin by pulling on handle. 3. Grease all pivot points. Lower the jack stand and engage the top pin by pushing 4. Top off hydraulic reservoir to minimize trapped air. on the handle. Make sure pin is engaged in hole by rotating jack stand back and forth. -
Page 14: Troubleshooting
TROUBLESHOOTING 5. Check the voltage at the coils which operate the Introduction solenoid valves to be sure that the voltage at the coils is a minimum of 9-1/2 volts DC. Whenever service is necessary, your local dealer knows your plow best and is interested in your complete satisfaction. -
Page 15: Troubleshooting Chart
TROUBLESHOOTING CHART PROBLEM PROBABLE CAUSE CORRECTIVE ACTION Plow will not lift (Motor runs) Hydraulic fluid level low See Maintenance Section Defective Control Unit Refer to Dealer Improper main pressure relief valve Refer to Dealer pressure setting, debris causing valve to stick Breather cap plugged See Maintenance Section Faulty raise or raise/float solenoid... - Page 16 PROBLEM PROBABLE CAUSE CORRECTIVE ACTION Fluid leaking at Pump Assembly Hydraulic fittings not torqued Refer to Dealer properly (too tight, too loose) O-Rings between valve block and Refer to Dealer endhead are cut or not seating properly O-Rings between endhead and Refer to Dealer reservoir cut or not seating properly Reservoir over-full...
- Page 17 PROBLEM PROBABLE CAUSE CORRECTIVE ACTION Unit will not lower See all above conditions Refer to Dealer Raise lower ram defective allowing Refer to Dealer NOTE: In down pressure mode movement in one direction only only Defective Control Unit Refer to Dealer Defective down pressure solenoid Refer to Dealer Machine failure...
- Page 18 PROBLEM PROBABLE CAUSE CORRECTIVE ACTION Blade wing moves very slowly Hydraulic fluid level low See Maintenance Section Crossover Relief Valve defective or Refer to Dealer sticking Improper oil viscosity for outside air See Maintenance Section temperature, unit not at normal operating temperature Defective Wing Cylinder Refer to Dealer...
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Page 19: Maintenance
MAINTENANCE 2. Apply a small amount of light oil to the hitch pins and General pivots, to pivot pins between the center blade assembly and the intermediate pivot assembly, between lift and swing cylinder pivot pins and the lift linkage pivots. 3. -
Page 20: Hydraulic Cylinders
screws and tighten the jam nut to 70 lb-ft. Then place the Changing Oil and Cleaning Filter Screen lock nut on the cap screw and tighten to 70 lb-ft. Pivot Frame Assembly: Install the 1" slotted nut on the threaded end of the special CAUTION screw and tighten finger tight. -
Page 21: Disk Shoe Adjustment
9. Clean the oil reservoir inside and out with a suitable solvent. 10. Inspect the o-ring seal for damage, replace if needed, FILLER CAP lubricate with fresh oil and reinstall reservoir carefully to avoid damaging the O-ring. 11. Mark hydraulic fittings for position and location on both angle and lift cylinders and carefully disconnect them. - Page 22 IMPORTANT: 1. Drive the vehicle, with snow plow mounted, onto a If washers must be added, add one smooth, level surface. Park the vehicle, move the plow washer LESS than the amount the disk shoe was off wings until the wings are in the scoop position on each the ground.
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Page 23: Float Limiter Adjustment
13. Lower plow onto blocking. Float Limiter Adjustment IMPORTANT: The disk shoes must be properly adjusted prior to adjusting the float limiter. If the WARNING shoes are not properly adjusted, the float limiter adjustment cannot be properly made. Keep hands and feet clear of wings and center 1. -
Page 24: Pivot Assembly Pivot Screws
Pivot Assembly Pivot Screws Cutting Edge NOTE: Cutting edge must be replaced when it is worn to the bottom edge of the frame. 1. Raise the plow to the full UP position. 2. Place suitable blocking under A-frame of plow to allow at least 6"... -
Page 25: Trip Spring Adjustment
NOTE: Springs are properly adjusted when two or more coils allow a 0.010" feeler gauge to just pass between the separated coils. (A 3 x 5 post card is approximately the same thickness). CAUTION MOUNTING STRIP • Do not overtighten springs. If more than 0.015" CENTER CUTTING EDGE (1/64") gap appears between coil with plow at rest damage could occur to equipment during... - Page 26 NOTES...
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Page 27: Torque Specifications
TORQUE SPECIFICATIONS 1 or 2 Grade No Marks and Head Markings Grade No Marks and Nut Markings Grade 1 Grade 2 Grade 5, 5.1 or 5.2 Grade 8 or 8.2 Lubricated Lubricated Lubricated Lubricated SIZE lb-ft lb-ft lb-ft lb-ft lb-ft lb-ft lb-ft lb-ft... -
Page 28: Hydraulic Schematic (Gravity)
HYDRAULIC SCHEMATIC (GRAVITY) -
Page 29: Hydraulic Schematic (Down Pressure)
HYDRAULIC SCHEMATIC (DOWN PRESSURE) -
Page 30: Wiring Schematic (Gravity)
WIRING SCHEMATIC (GRAVITY) -
Page 31: Wiring Schematic (Down Pressure)
WIRING SCHEMATIC (DOWN PRESSURE) -
Page 32: Warranty
TWO YEAR LIMITED WARRANTY COVERAGE The Sno-Way snow plow structural elements are warranted to be free from defects in materials and workmanship for a period of two years from date of delivery from an authorized Sno-Way Dealer. The Sno-Way Warranty Registration card for the product must be properly filled out and mailed to Sno- Way within 30 days of date of purchase to obtain benefits of this section of warranty.
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