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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 set screw when adjustment
is complete.
2-2. Hydraulic Cylinder Adjustment
Back & Leg Sections
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.
b. Leg Section
Position the leg section all the way up until it is
horizontal. 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.
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 top from the seat section for access to
the locking set screws.
Loosen the set screw located above the eccentric
cam in each side frame. 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. Tighten the set screws
and replace the seat section top when proper
adjustment has been achieved. See figure 2-2.
Figure 2-2. Back Section Adjustment
Figure 2-1. Eccentric Cam Adjustment
SET SCREW
ALLEN
WRENCH
ECCENTRIC
CAM
SEAT SECTION TOP
SET
SCREW
BACK SECTION CYLINDER
ECCENTRIC CAM
BACK SECTION
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