Snap-on Equipment EEWA717A, Руководство оператора

Страница: 54 / 66

Adjust A-Arms
Many vehicles have adjustment provisions for
caster and camber located on the suspension
A-Arm (control arm), either on the upper or lower
arm. The adjustments may be made with shims,
eccentric cams, or slots in the frame. Both angles
are easily corrected to manufacturer’s specification
using the Adjust A-Arm icon.
First, a screen instructs the operator to apply the
brake pedal depressor (important) and remove the
lock pins from the turntables. Select
OK.
The next screen, A-Arm Adjust , allows selection of
the location of the adjustable A-Arm and whether
the corrections will be made on the turntables or
elevated. Examine the vehicle for the location
of the adjusters. It does not matter whether the
a-arms have shims, slots, or cams.
Select the proper icon on the Adjust A-Arm screen.
The icons are :
Adjustment on Upper or Lower Control
arm.
A d j u s t m e n t o n Tu r n t a b l e s o r
Elevated
The adjustment screen contains a
graphic of the right side a-arm along with two
meters. These meters represent the movement
of the front and rear of the a-arm, and their
relationship to the desired readings. Move each
side of the a-arm by adding/removing shims,
loosening the bolts and sliding the arm, or turning
the eccentric cams, until each meter indicator is
centered in the meter – this is the desired value
for both caster and camber. Press OK when this
side is complete – a similar screen appears for the
left side. When both sides are completed, press
OK to return to the Readings Screen.
52
Operation