Pontiac FIREBIRD 1972 Service Manual page 577

V-8 ENGINE 6-65
New lifters are serviced as individual units packaged with
a plastic coating. Leave the coating on until ready to check
leak-down rate. It is not necessary to remove the oil from
new lifters prior to checking leak-down rate since special
leak-down oil is already in new lifters.
Wash tank and tray J 5821 (Fig. 6-106) is recommended
for cleaning valve lifters. This tank should be used only for
valve lifters and should be kept covered when not in use.
All servicing should be done in an area removed from
grinders or other sources of dust and foreign material.
Lifters should at all times be stored in a covered box which
will aid in keeping them clean. The lifter box should be
kept dry and as free of oil as possible.
DISASSEMBLE
1. Remove push rod seat retainer ring by holding seat
down with push rod while dislodging ring from lifter
body with a pointed tool (Fig. 6-107).
Invert lifter and allow push rod seat and plunger to
slide out of body. If plunger sticks in body, place lifter
in large end of hydraulic valve lifter plunger remover
J 4160-A, with push rod end of lifter downward.
Hold tool firmly in hand with thumb over lifter body
and sharply strike the tool against a block of wood
until plunger falls out (Fig. 6-108). (It may be neces-
sary to soak a lifter having a stuck plunger in cleaning
solvent for several minutes in order to remove the
plunger).
3. Drain oil out of lifter body and place all valve lifter
parts in separate compartment of tray from wash
CLEANING SOLVENT KEROSENE
Fig. 6 - 1 0 6 Lifter Wash Tank and Tray
Fig. 6 - 1 0 7 Removing Pushrod Seat Retainer
CAUTION: Valve liftr body and plunger are
selectively fiited and must not be interchanged
with parts of other lifers. (Keeping all parts of
lifers together will also aid in trouble diagno-
sis.)
CLEAN AND INSPECT
Wash tank J 5821 (Fig. 6-106) is recommended for clean-
ing valve lifter parts. This tank consists of two chambers,
Fig. 6 - 1 0 8 Removing Stuck Plunger