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| PlowGuard® Installation Guide |
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 Prepare
Moldboard
Clean of all
foreign matter from moldboard. Before attaching snowplow
blade and PlowGuard® make sure moldboard surface is clean
of debris or corrosion that might interfere with a tight assembly.
Repair damaged moldboard with Winter® Adapter Blade.
The moldboard is the support for the cutting edge. If a moldboard is short from
unwanted wear, the higher the backward blade torque. This results in bolt and
blade breakage. Many times the wear extends beyond the bolt holes making it difficult
to attach the blade.
Winter® Equipment has designed a Moldboard Adapter Blade to rebuild
a damaged moldboard without the high cost of replacement cost. It is a quick
and easy way to restore a solid mounting surface for your blade. For more information,
or to order: call 1-800-294-6837.
Bolts
Use Grade 8 Plow Bolts (They will not
stretch when tightened S.A.E. Specification #J1701 requirements.)
Number 3 head plow bolts (with self-locking nuts) will greatly
reduce the likelihood of blade chatter & bolt failure.
Refer to S.A.E. Specification #J1701 for proper torque requirements
-Over-torque will cause heads to "pop-off."
-Under-torque will let the blades move during use, shearing the bolts.
Nuts
Use S.A.E. Grade 8 Nuts, they are hardened and will not "mushroom " or
flatten in use. Lock Nuts are preferred because they lock to the bolt, and are
always Grade 8. Standard Nuts, if used, should be Grade 8. We recommend you double
nut (no lock washer).
No Lock Washers
Lock washers gouge the backside of the
snowplow moldboard because the washer is harder than the moldboard.
These hardened lock washers act as a cutting tool, causing unwanted "metal
shards" on the moldboard where the nut is to seat. No matter
how hard you tighten the nut, these metal shards will flatten
under use, causing the nut to loosen on the bolt and eventually
shear the bolt under use. Use a hardened lock nut to alleviate
this condition. If using standard Grade 8 nuts, double nut.
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