FlexArm S-36 - Cylinder Replacement; Front Cylinder Replacement

10/29/2020 REV. 003 17
CYLINDER REPLACEMENT:
The gas cylinders used to counterbalance the arm are wear items and will wear out over time. If the arm no
longer maintains counterbalance, (with proper counterbalance adjustment, see pg.8) it is a good indication
the gas cylinders need replaced.
The cylinder part number for your unit is screen printed in white on the black barrel of the cylinder. The
cylinder part number is prefixed by “C-16” and is followed by 5 numbers. When ordering replacement
cylinders, please provide the complete “C-16_ _ _ _ _” number from the cylinder on your unit.
Replacement cylinders installed by the customer carry a 30-day limited warranty from the date of purchase.
When replacing a gas cylinder, make sure not to scratch, mar, or nick the shaft on either the old cylinder being
replaced, or the new cylinder being installed. All warranty cylinders must be returned to FlexArm for
evaluation. The warranty is void if the cylinder to be evaluated shows signs of scratches or nicks on the
cylinder shaft or body.
Front Cylinder Replacement
1. Adjust the front cylinder by turning the hex on the top adjuster. Turning the
adjuster with a 3/16” Allen wrench (counter clockwise) until the dowel pin of the
adjuster reaches the lowest position in the slot of the top plates.
2. Hold the front arm securely. Once the screws in this step are removed, the front
arm will want to extend up! Remove the arm screws on the front plates (see
figure 11) so that the front arm is free and access to the front cylinder can be
made.
3. Once the screws are removed, slowly guide the front arm up to the fully extended
position (see Figure 12).
4. Remove the shoulder bolt attaching the cylinder to the front
arm. Note that there are two spacers on either side of the
cylinder clevis to hold the cylinder centered in the arm. Do not
lose these.
5. Unscrew the tube end of the cylinder, by hand, from the end
fitting attached to the adjuster.
6. Remove the end fitting from the tube end of the new cylinder.
Use care not to damage or scratch the cylinder rod. Dents or
scratches on the cylinder rod will cause the nitrogen gas to leak,
leading to the need for another cylinder.
Figure 11
Figure 12