Mts Series 322 Load Frames Manual do Utilizador descarregar pdf (Página 75)

Series 322 Load Unit Maintenance

Load Unit: Align the Force Transducer

This section describes how to align a force transducer with the load unit actuator.

The load units shown may vary from what you may have.

Load units can come with two types of transducer mounting hardware. One

preloads the force transducer with a hex nut; the other uses a preloader collar

with jackbolts or captive set screws. Some load units use a preloader collar with

six or eight internal jackbolts to preload the force transducer.

Required equipment • Torque wrench with a 5–135 N·m (5–100 lbf·ft) range

• Molykote G·n paste

• Rubber mallet

• 0.0025 mm (0.0001 in) precision dial indicator with a magnetic base

Hex Nut Preloading Hardware Preloader Collar Hardware

1. Get things ready.

A. If grips are installed, remove them.

B. Turn on system electrical power.

C. Turn on high hydraulic pressure.

2. Set up the load unit.

A. Position the actuator at midstroke.

The identification plate specifies the final torque value.

Identification

plate

Stud

Hex nut

Washer

Adapter bushing

Transducer

(appearance

can vary)

Crosshead

Identification plate

Washer

Preloaded collar

Stud

1 2 ... 70 71 72 73 74 75 76 77 78 79 80 ... 95 96

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Mts Series 322 Load Frames Manual do Utilizador Página 75