Tiger-products-co-ltd TWR-180 User Manual download pdf (Page 79)

MAINTENANCE

Maintenance Section 5-7

MAINTENANCE

TWR-180/TWR-120 12/04

DANGER!

Blade Servicing

Inspect blades daily. Blades should be free of deep chips, cracks or abnormal bends.

Blades should

always be replaced in pairs. Blades of different weights may cause serious imbalance

which can result in damage to the gearbox. Damage caused by unbalanced blades can make the

machine dangerous to operate, increasing the risk of a broken gearbox lower shaft. Never weld or

modify blades. Welding and other modifications such as straightening the blade after it has been bent

can severely reduce the strength of the blade, increasing the likelihood that a piece breaks and can be

thrown from the machine.

DO NOT SHARPEN BLADES. Sharpening blades can reduce the strength of the blade, increasing

the likelihood that a piece breaks and can be thrown from the machine. Should the blades become

dull, replace them. Blades should always be replaced in pairs.

Blade Removal

To remove blades for replacement, remove the bolt access cover plate on the deck of cutter near each gearbox.

Remove lock nut from blade bolt. It is recommended to change blade bolts and locknuts every time the blades

are replaced . Inspect the condition of the blade bolt bushing and contact your dealer if keyway is worn or

damaged.

WARNING!

AVOID PERSONAL INJURY. Blade and/or blade carrier removal should be done only with the tractor

engine shut off, key removed, in neutral, parking brake on, PTO disengaged, PTO input shaft

removed, and the cutter blocked in the raised position.

Blade Installation

When installing blades, use new blade bolts and blade nuts. Always replace blades in matched sets. A 1-5/8"

socket can be used to torque blade bolts to 600 foot pounds dry assembly. You will need at least 3 feet of leverage

to be able to do this. Check blade bolt torque after the first 10 hours of operation.

WARNING!

Use only original equipment blades on this cutter. They are made of special heat treated alloy steel.

Substitute blades may not meet specifications and may be dangerous.

Retighten blade bolts daily. Cover plates are provided on the deck of the cutter to facilitate this.

After installing new blades or blade bolts ensure that blades are free swinging and that there is 1" to 1-1/2" of free

up and down motion at the tip of the blade.

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Tiger-products-co-ltd TWR-180 User Manual Page 79