2. INSPECT GEAR HUBS AND GEARS.
b. Replace the integral shaft and gear if any wear is
detectable visibly or by touch in the seal areas or
at the drive coupling. A maximum of 0.002-in.
(0.051 mm) wear is allowable. Wear or damage
to key or keyway justifies replacement. Wear in
Gears are a matched set, therefore
both gears must be replaced even if
only one was found damaged.
3. INSPECT THRUST PLATES.
a. Any wear on gear hubs that is detectable by
a. Thrust plates seal the gear section at sides of
touch, or exceeding 0.002-in.
gears. Wear in this area will allow internal
Scoring, grooving, or
slippage, resulting in oil bypassing within motor.
burring of the outside diameter of the gear teeth,
Maximum allowable wear is 0.002-in. (0.051
as well as nicking, grooving, or fretting of teeth
mm). Replace thrust plates if they are scored,
surfaces necessitates replacement.
eroded, or pitted.