TECHNICAL
PROCEDURE
AK-201 UNIVERSAL LOAD
SCALE KIT
SUBJECT:
Operator’s Guide
LIT NO:
L597
DATE:
March 2008
REVISION:
D
AK-201 UNIVERSAL LOAD SCALE KIT
(ULSK) DESCRIPTION
The AK-201 universal load scale kit provides an
economical and accurate way to determine axle load.
The 2½-inch diameter gage directly indicates axle
load, making it easy to use. The gage is easily
calibrated to provide consistently accurate readings
and is available in both dry and liquid-filled models.
The AK-201 is also available with or without a
manual dump feature. The AK-201 has the same
footprint and mounting bolt pattern as other
Hendrickson load scale kits and comes with push-to-
connect fittings.
IMPORTANT:
For maximum accuracy, the AK-201
must be properly calibrated before use.
However, the liquid-filled models are
factory-calibrated and therefore do not
need to be calibrated.
If you have a liquid-filled model, skip
the following Calibration Procedure and
proceed to the section titled OPERATING
THE AK-201.
If you have a dry model, it must first be
calibrated before it can be expected to
deliver a reliable indication of axle load.
To calibrate, continue with the following
procedure.
CALIBRATION PROCEDURE (DRY
MODELS ONLY)
PREPARE THE TRAILER FOR CALIBRATION
1.
Load the trailer to its maximum legal load (or as
close as possible).
2.
Locate a drive-on scale that gives reliable weight
measurements. Position the trailer on the scale.
3.
During calibration, maintain the proper air
pressure in the trailer air reservoir.
CALIBRATING THE AK-201
IMPORTANT:
The gage valve should always be in the
GAGE OFF position unless performing a
calibration or measuring axle load. If left
in the GAGE ON position while operating
the vehicle, the gage will be damaged.
Figure 1. Gage valve in the GAGE ON position (shown with
optional dump feature)
