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Removing load bars from a Dairy WOW 4000 unit

How to remove the load bars from a Dairy WOW (Walk over Weighing) 4000 unit.

Updated over 3 weeks ago

๐Ÿ“ Similar instructions for other models:

๐Ÿ“ Once faulty load bars are removed, contact your local Tru-Test retailer. They will organise shipment to an authorised service agent.

Service equipment needed

The bolts on the load bar feet require use of a power impact driver to remove them.

Detaching the rubber mat and deck plates

  1. Remove the 12 bolts on the top of the platform (six at each end).

  2. Remove the square washers beneath (observe that these are only used where there is no raised grip pattern on the rubber mat).

  3. Peel back and lift off the rubber mat.

  4. Remove the 12 bolts securing the 2 deck plates to the galvanised frame. โ€‹

  5. Lift the 2 deck plates out from the centre of the platform and put to the side.

Hoisting the platform

Lift the platform off the load bars using machinery (e.g. a tractor with forks or a hi-ab or winch), and safely place on ground nearby:

Winching up and removing the platform leaves the two load bars sitting in their casings on the ground (beneath the galvanised frame).

๐Ÿ›‘ It is recommended to use a

winch with a SWL (safe-working-load) of 250 kg (~551 lb) or greater. โ€‹

The steel support bar holding the winch should be a minimum of 50 mm (~2") x 3 mm (~โ…›") WT square hollow bar (can be larger and thicker).

It can be spanned over 1 metre of maximum span, and rest on the frame rails.

๐Ÿ’ก It is safer to put through bolts on either side of the square bar so that it cannot slide off the railings.

๐Ÿ›‘ Do not place limbs under the suspended platform ever! It could slip and crush you! You can use a flat crowbar to lever and slide out the platform without putting your arms or hands underneath.

Unbolting the load bar feet

Each load bar is secured with two rubber feet into its casing.

Use your power impact driver tool to:

  1. Unbolt each of the 4 foot nuts (and washer), on each load bar, using a power impact driver tool. The powerful impact vibrations can assist in unscrewing the nuts.

  2. Lift the load bar assembly (and its cable) up free of its casing and bolts.

๐Ÿ“ The bolts used on each of the 4 casing brackets to fasten the casing to the concrete base can remain in place.

๐Ÿ“ When you come to replace the load bar into its casing, ensure that each nut is greased upon re-assembly. This is to help prevent the stainless steel nut from welding itself to the bolt (or to prevent galling).

๐Ÿคš Ensure these nuts are fastened to a torque of 30 Nm (which is about 40% of the maximum for this size nut and bolt). They are not very tight and donโ€™t need to be because of the rubber underlining of the feet.

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