Repair Procedures; Torque Wrench Head Disassembly - SPX TWLC Series Operating Manual

Low clearance hydraulic torque wrench

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Table Of Contents

Table of Contents

It is recommended that full servicing is carried out on an annual basis by the manufacturer or approved

service agent (other than maintenance, lubrication, and emergency seal replacement). All components

shall be inspected and critical components subjected to nondestructive testing. Hydraulic torque

wrenches will be pressure tested and issued with test certification.

Although it is possible to disassemble the TWLC hydraulic torque wrench on site, it is recommended

that this operation be carried out in a clean workshop environment, as dirt and debris can severely

affect the performance of the seals and other components. Eye protection should be worn at all times

during tool assembly and disassembly.

General servicing/repair can be carried out in three specific areas of the hydraulic torque wrench. This

allows servicing and lubricating of specific components without complete stripdown. The three servicing

areas are:

•

Direct fit head components and lubrication.

•

Multiswivel manifold components.

•

Hydraulic cylinder/body components.

Full servicing indicates that all three areas are

serviced.

Torque Wrench Head Disassembly

The direct fit head components should be

lubricated at regular intervals (typically every

six months under normal use). Component

lubrication is carried out as follows:

If assembled, detach the quick-change head

from the drive body.

See Figure 6. Remove the three off shoulder

screws.

See Figure 7. Lift away the LH sideplate.

See the Parts List. Remove the crank

assembly, and remove the slider.

Remove the ratchet, drive shoe, and springs.

Thoroughly clean all components, removing

the old lubricant using a mild degreasing

agent. Inspect all components for damage and/

or excessive wear. Inspect the ratchet and

drive shoe teeth for damage, cracks, etc. Any

substandard component must be replaced

immediately using genuine parts supplied by SPX

Bolting Systems.