b. Turn brake housing (14) upside down on a wood
g. Remove and discard preformed packing (24)
block about five inches high and with a
from brake housing (14).
circumference less than that of the housing.
c. Lift housing from piston assembly and remove
d. Remove four capscrews (17) to free piston
Dry cleaning solvent P-D680
assembly still inside. The block will prevent the
is toxic and flammable. Wear
piston assembly from falling.
protective goggles and gloves
and use only in a well
e. Using soft faced hammer, tap brake piston (18)
ventilated area. Avoid contact
from brake cylinder (19).
with skin, eyes, and clothes
and do not breathe vapors.
f. Remove and discard preformed packings (20),
Do not use near open flame or
(21), (22), and (23) from brake piston (18) and
brake cylinder (19).
point is 100F-138F (38C-
59C). If you become dizzy
while using cleaning solvent,
get fresh air immediately