What causes a Yamaha Bolt to over torque?
The cleanliness of the threads, oil or no oil on the threads, or socket extensions can lead to under- or over-stretching of fasteners. Applying an initial low torque value followed by turning the fastener an additional amount, typically 90˚ or 180˚, will more accurately stretch a fastener to its design limit.
Are there any bolts that need to be replaced?
Service procedures occasionally will specify to not reuse or measure fasteners before reusing them. 4.2L V6 and V8 flywheel bolts are examples of fasteners requiring replacement if removed. Torqueto-angle bolts used in high-load applications could possibly stretch beyond their elastic limits if reused.
What kind of torque does a Yamaha four stroke have?
Newer Yamaha four-stroke models specify tightening procedures for some applications not previously used on older models for similar applications.
What happens when you put too much torque on a fastener?
Applying too much torque will overstretch the fastener, exceeding its elastic limits also resulting in insufficient tension to keep the fastener tight. Over-stretching also weakens a fastener and could eventually cause it to break. The right amount of torque is determined by the size and material of the fastener and the components being secured.
The cleanliness of the threads, oil or no oil on the threads, or socket extensions can lead to under- or over-stretching of fasteners. Applying an initial low torque value followed by turning the fastener an additional amount, typically 90˚ or 180˚, will more accurately stretch a fastener to its design limit.
Service procedures occasionally will specify to not reuse or measure fasteners before reusing them. 4.2L V6 and V8 flywheel bolts are examples of fasteners requiring replacement if removed. Torqueto-angle bolts used in high-load applications could possibly stretch beyond their elastic limits if reused.
Newer Yamaha four-stroke models specify tightening procedures for some applications not previously used on older models for similar applications.
Applying too much torque will overstretch the fastener, exceeding its elastic limits also resulting in insufficient tension to keep the fastener tight. Over-stretching also weakens a fastener and could eventually cause it to break. The right amount of torque is determined by the size and material of the fastener and the components being secured.
Is there a way to check the torque of a bolt?
Bolt torque can be checked with a tool such as a torque wrench, but without a value as a guideline, a torque wrench offers no advantage. To arrive at the correct torque value, several other values must be found first. Two principles influence the correct clamping pressure for each bolt, known as clamp load.
What should the torque be on a 5 pack fastener?
The World Leader in racing fastener technology since 1968 ARP General Torque recommendations Listed below are the general torque recommendations for bulk 5-packs and engine/accessory fasteners. Recommended torque is equal to 75% of the fastener’s yield strength.
What are the torque values on a Harley Davidson?
Technical information on fastener torque values used in the maintenance, repair or assembly of Harley-Davidson motorcycles. If you are unsure of the proper torque value to use, here is a general chart of fastener torque values. This table is based upon Grade 5 fasteners, generally used Harley-Davidson motorcycles.
What should the torque be on a bolt?
US Recommended Bolt Torque. † Fine thread figures are for 1″-14. Grade 2, 5, and 8 values are for slightly lubricated bolts.
Technical information on fastener torque values used in the maintenance, repair or assembly of Harley-Davidson motorcycles. If you are unsure of the proper torque value to use, here is a general chart of fastener torque values. This table is based upon Grade 5 fasteners, generally used Harley-Davidson motorcycles.
What is the grade of torque lock nut clamp?
The prevailing torque lock nut clamp loads are listed at 75% of the proof loads specified for the appropriate grade bolt: Grade C – SAE J429 Grade 8, FNL Grade 9 – FNL Grade 9 bolt, Grade F – SAE J429 Grade 5, Grade G – SAE J429 Grade 8.