VHS-60/4 and VHS-70/4 Demolition and Scrap Shears Caterpillar

Rotator Head Bolts - Check

Usage:

Position the work tool in an upright position just above the ground.

Stop the engine of the host machine in order to prevent inadvertent movement of the work tool.
Note: The host machine must be equipped with a boom lowering control valve in order to perform this procedure. If the host machine is not equipped with a boom lowering control valve, contact your Verachtert dealer.

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Illustration 1	g02174758

Check the static inspection torque of all rotator head bolts (2) in outer ring (1). Only a few of the bolts will be accessible at a time. Use appropriate tooling in order to apply the torque that is specified in table 1.

Note: The shear can be rotated manually in order to replace all of the rotator head bolts (2). Use a sufficiently long lever in order to rotate the shear.

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Table 1
Static inspection torque
Sales model	Bolt size	Torque value
VHS-60/4	M20 x 2.5	450 N·m (330 lb ft)
VHS-70/4	M24 x 3	800 N·m (590 lb ft)

The bolt should not move before a torque that is specified in table 1 is reached. If the bolt moves, then the sealant has been broken and the bolt has been overstressed. All bolts (2) in outer ring (1) must then be replaced.

ReferenceFor more information on replacing the rotator head bolts, refer to Operation and Maintenance Manual, "Rotator Head Bolts - Replace" for the work tool that is being serviced.

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Illustration 2	g02174775

Remove bolts (5) and washers (4). Remove cover plate (3) .

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Illustration 3	g02190813

Cover plate (3) must be removed in order to access rotator head bolts (6) on the inner ring (7). Only a few bolts will be accessible at a time.

Check the static inspection torque of all rotator head bolts (6) in the inner ring (7). Use appropriate tooling in order to apply the torque that is specified in table 1.
Note: The shear can be rotated manually in order to replace all of the bolts. Use a sufficiently long lever in order to rotate the shear.
The bolt (6) should not move before a torque that is specified in table 1 is reached. If the bolt moves, then the sealant has been broken and the bolt has been overstressed. All rotator head bolts (6) in inner ring (7) must then be replaced.
ReferenceFor more information on replacing the rotator head bolts, refer to Operation and Maintenance Manual, "Rotator Head Bolts - Replace" for the work tool that is being serviced.