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SECTION II MECHANICAL TABLE ADJUSTMENTS
2-1. Back Section Gear Mesh Adjustment
The gear mesh is adjusted by the use of an eccen-
tric cam. This cam moves the gear teeth closer
together to eliminate gear lash. This adjustment
arrangement compensates for any wear between
the gears that might occur.
To adjust:
Loosen the cam locking allen set screw. Use an
allen wrench to rotate the eccentric cam. See
figure 2-1. Tighten the locking set screw when
adjustment is complete.
Any twisting or flexing of the back section as it
approaches the stalled position indicates that one
of the cylinders is not reaching its fully extended
position at the same time as the other. This
condition would require an adjustment.
To adjust:
Remove the seat section top for access to the cam
locking set screws and loosen the set screws. Use
an allen wrench to turn the cylinder eccentric cams
as required to shift either cylinder fore or aft as
needed so no twisting or flexing of the back section
is observed when it is stalled in the full up position.
See figure 2-2. Tighten the set screws and replace
the seat section top when the adjustment is com-
pleted.
Figure 2-1. Eccentric Cam Adjustment
2-2. Hydraulic Cylinder Adjustment
The hydraulic cylinder rams that control both the
back and leg sections must move together so that
these sections are not twisted when operated. This
is accomplished by the use of eccentric cams that
move the cylinder bodies fore and aft to adjust their
effective stroke.
NOTE
Adjust gear mesh before adjusting ec-
centric cams for the back section.
a. Back Section
Position the back section all the way up until it
stalls. Both sides of the back section should stop
moving at the same time and should not show any
signs of twisting.
Figure 2-2. Back Section Adjustment
b. Leg Section
Position the leg section all the way up. Both sides
of the leg section should stop moving at the same
time and should not show any signs of twisting.
Any twisting or flexing of the leg section as it
approaches the stalled position indicates that one
of the cylinders is not reaching its fully extended
position at the same time as the other and an
adjustment is required.
82206-201
SET SCREW
ALLEN
WRENCH
ECCENTRIC
CAM
82206-202
BACK SECTION
SET SCREW
BACK SECTION
CYLINDER
ECCENTRIC CAM
SEAT SECTION TOP
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