Presentation on theme: "Fork Inspection & Maintenance TM. Fork Inspection & Maintenance Forks are a critical part of the everyday operation of lift trucks. The stresses, strains."— Presentation transcript:
Fork Inspection & Maintenance TM
Fork Inspection & Maintenance Forks are a critical part of the everyday operation of lift trucks. The stresses, strains and shock loadings to which these parts are subjected, make it important to regularly inspect them and to replace them when worn or damaged.
Fork Inspection & Maintenance Why You Should Inspect Your Forks! When Worn or Damaged Forks are Not Replaced... The Potential for Fork Failure is Significantly Increased
Fork Inspection & Maintenance How Does Fork Wear and Damage Occur? Improper Chain Adjustments Improper Operation of Truck Normal Wear From Use Over Time Use Beyond Rated Load Capacity Application Environment Tire Wear
Fork Inspection & Maintenance What Can Routine Fork Inspections Do For You? Reduce Downtime Due to Fork Failure May Prevent Personal Injuries or Property Damage Due to Fork Failure Help Point Out Operator Error or Abuse
Fork Inspection & Maintenance How to Determine Fork Condition Inspect For Surface Cracks Check For Straightness Of The Blade Or Shank Check For Excessive Fork Angle Check For Different Heights of Fork Tips Inspect For Positioning Lock Damage Inspect For Normal Wear Over Time
Fork Inspection & Maintenance 1. Inspect For Surface cracks
Fork Inspection & Maintenance Inspect For Surface Cracks Pay special attention to the heel and to the welds attaching all mounting components to the fork. Cracks are more likely to occur at these areas. Each fork must be tested for surface cracks with a non-destructive test, such as magnaflux, every six months. If a crack is found, the fork must not be used.
Fork Inspection & Maintenance 2. Check For Straightness Of The Blade or Shank
Fork Inspection & Maintenance Check For Straightness Of The Blade Or Shank Check the upper face of the blade and the front face of the shank. If either surface is not straight, the fork must not be used.
Fork Inspection & Maintenance Check For Excessive Fork Angle Standard forks are manufactured with a 90 degree angle. If that angle exceeds 93 degrees, the fork must not be used.
Fork Inspection & Maintenance 4. Check For Different Heights Of Fork Tips
Fork Inspection & Maintenance Check For Different Heights of Fork Tips The difference in height of the fork tips must not exceed 3% of the length of the blade. If so, the forks must be replaced. Fork Length 48 In. 72 In. 96 In. 3% 1.44 In In In.
Fork Inspection & Maintenance Inspect For Positioning Lock Damage (Hook Type Forks) Check to see that the positioning lock is in good condition and proper working order. If the lock is not working properly, the fork must not be used until the positioning lock has been replaced.
Fork Inspection & Maintenance 6. Inspect For Normal Wear Over Time
Fork Inspection & Maintenance Inspect For Normal Wear Over Time Over the course of their effective life forks wear. The principal areas of wear are the heel and blade. The amount of wear can be determined using calipers for measurement. If the percentage of wear is in excess of 10%, the forks must be replaced.
Fork Inspection & Maintenance Never weld, grind, heat, or attempt to repair forks. Damaged or worn forks must be replaced.
Fork Inspection & Maintenance Wear Vs. Capacity Percentage of Reduction in Blade Thickness Percentage of Originial Fork Strength A Fork Reduced By 10% In Blade Thickness Has Lost 20% Of Its Original Strength And Should Not Continue To Be Used
Fork Inspection & Maintenance UNISOURCE Fork Offering OEM Quality Complete Range of Forks In Stock Availability Everyday Low Pricing A Strong Warranty
Fork Inspection & Maintenance UNISOURCE Forks Are... Supplied by Kenhar, the Leading Manufacturer of Forks in North America Upset Forged Magnetic Particle Inspected Available in Assorted Sizes and Capacities Available in Both ITA Hook-Type and Pin- Type Available in Standard Taper, Full Taper and Polished Blades
Fork Inspection & Maintenance How Can You Arrange A Fork Inspection? Contact Your Hyster Industrial Truck Dealer A Complete Fork Inspection Will Be Performed At Your Location By Qualified Dealer Staff
Fork Inspection & Maintenance What Will You Receive From The Inspection? You Will Receive A Management Report Summarizing The Fork Condition And Recommended Action For Each Truck In Your Fleet.