Parts Inspection - WORKMASTER GO-A8-PW Operator's Manual

XIV. PARTS INSPECTION
When the GO-A8 Opener is in for maintenance and the Rolling Cart and
Impactor have been disassembled (partial or complete), the components should
be cleaned and inspected for wear before lubricating and reassembly of the
Opener. Proper maintenance of equipment often depends upon the ability of a
service technician to determine whether a part or assembly is worn to the point
where it should be replaced. The following information is intended to help the
service technician make this decision.
1. The CYLINDER (25) is a sleeve that has been hardened, ground and
honed to close tolerance. It includes a series of slots or holes in the wall
for porting the air to the Blades, and exhausting it to atmosphere.
Examine the Cylinder on the inside diameter for rough circular grooves. If
such grooves are in excess of .005" deep, replace the Cylinder. Such
grooves are usually caused by foreign matter in the airline.
IMPORTANT
2. A badly scored Cylinder cannot be restored to usefulness by honing.
Enlarging the inside diameter widens the seal point between the Rotor
and Cylinder to a degree that will hinder the operation of the motor and
will result in loss of speed and power.
3. Minor scoring and rust can be removed from the inside the Cylinder by
using a Flybur Tool. This tool can be made from a slotted piece of metal
dowel rod and a piece of 150 grit abrasive mounted in a small air or
electric drill. If scoring cannot be removed with a light application of this
tool, the Cylinder should be replaced.
Installation of an air filter/dryer in the air supply
line is the best method for reducing grooving and
scoring of the cylinder. See Section XVI:
Accessories for product information.
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