Encyclopedia of Anchoring (CA06114E)

Proper Maintenance and Use of Tooling Anchor installing tools require regular upkeep. All output stringbolts used in the drive train system should be checked for tightness. Loose or damaged bolts may fail at or below the anchor’s torque rating and contribute to damage elsewhere within the tool assembly.

Lost or damaged bolts can cause failure at or below the anchor torque rating or contribute to damage elsewhere on the output string.

Tools and parts should always be checked for wear or damage and parts should be replaced as necessary. Replacement parts should be ordered from CHANCE.

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While checking all bolts of the tool output string, also check the set screws of the locking-dog assembly. The two set screws (see below left) hold the two-dog assemblies in position. There is a screw below each “dog.” During anchor installation, keep anchor-drive wrench in alignment with anchor to prevent uneven wear or damage to the tool. Misalignment puts extremely high stress on the end of the wrench where the wrench fits over the anchor. This can possibly cause the drive tube to split on the end.

Locking Dog Housing

SET SCREW HOLE AND COUNTER SINK LINED UP

ANGLED FACE OF DOG POINTING TOWARD SOCKET END OF CASTING

SET SCREW

COUNTERSINK

DOG

Dog

DOG HOUSING

½” x ⅜” Set Screw

½” x ⅝” Set Screw

Locking dog assembly components.

In the middle position, the locking dogs hold the wrench drive tube. In the inside position, the locking dogs hold the anchor rod and drive tube.

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