GILLIG LOW FLOOR, Руководство по обслуживанию

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Specifications
3
Torque with Crowfoot Wrench
If a nut is situated so that it’s difficult to get a torque wrench and socket on it, a crowfoot wrench can be
used. The following calculation can be used for any torque and for any fastener.
When using a crowfoot wrench, you must adjust the torque setting on
your torque wrench following the formula below. Otherwise you will
over-torque and possibly break fasteners.
Refer to Figure S- 2 below. Add Distance A (the distance from the center of the torque wrench grip to the
center of the torque wrench drive) to Distance B (the distance of the center of the torque wrench drive to
the center of the crows foot socket). Divide the Gillig-specified torque value by this sum. Now multiply
the result by Distance A. The new torque, which you will set on your torque wrench, should be less
than the Gillig-specified torque.
For example, if the wrench is 10" long, the crows foot is 2" long, and you want 120 ft-lb of torque, you
would set the wrench for 100 ft-lb.
To utilize the formula shown in Figure S- 2 below, note the following:
Fastener Torque = the torque specified in the Gillig Service Manual for the fastener. In our example,
the torque value is 120 ft-lb.
Set Torque = the torque you set on your torque wrench when using the crowfoot. In our example, this
comes out to 100 ft-lb.
Distance A (in our example) = 10"
Distance B (in our example) = 2"
120 divided by 12 = 10
10
x 10 = 100 (ft-lb)
Figure S-2, Crowfoot Wrench Torque Formula
Fastener
Distance = B
Torque Wrench Distance = A
Set Torque = x A
Fastener Torque
A+B