1. CLEAN ALL PARTS IN SOLVENT P-D-680 AND
BLOW DRY WITH COMPRESSED AIR.
Count turns on adjusting screw (37)
for initial setting on reassembly.
a. Place a straight edge across housing bore.
d. Loosen jam nut (33) and unscrew
If a 0.005-in. (0.127 mm) feeler gauge will
adjusting screw (37) from cap (34).
slip between the straight edge and
housing replace housing.
e. Remove jam nut (33), retaining ring (38),
packing (36) and back-up ring (35) from
2. INSPECT DRIVE AND DRIVEN GEARS (21).
adjusting screw (37). Discard back-up
ring (35) and packing (36).
a. Any wear on gear hubs that is detectable
by touch, or exceeding 0.002-in. (0.051
f. Remove cap (34) from valve (28).
mm) justifies replacement.
grooving, or burring of outside diameter of
gear teeth, as well as nicking, grooving, or
fretting of teeth surfaces necessitates
Dry cleaning solvent P-D680 is toxic
goggles and gloves and use only in a
Gears are a matched set, therefore
well ventilated area. Avoid contact
both gears must be replaced even if
with skin, eyes, and clothes and do
only one was found damaged.
not breathe vapors. Do not use near
open flame or excessive heat. The
3. INSPECT DRIVE SHAFT (17).
flash point is 100F138F (38059C).
If you become dizzy while using
a. Replace drive shaft if any wear is
cleaning solvent, get fresh air
detectable visibly or by touch in seal areas
immediately and get medical aid. If
or at drive coupling. A maximum of
contact with eyes is made, wash your
0.002in. (0.051 mm) wear is allowable.
eyes with water and get medical aid
Wear or damage to splines justifies
replacement. Wear in shaft seal areas
Compressed air used for cleaning
purposes will not exceed 30 psi. Use
only with effective chip guarding and
4. INSPECT THRUST PLATES (13).
(goggles/shield, gloves, etc.).
a. Thrust plates seal gear section at sides of
gears. Wear in this area will allow internal
slippage, resulting in oil bypassing within