Pontiac FIREBIRD 1972 Service Manual page 533

SIX CYLINDER ENGINE 6-2 1
VALVE LIFTER
DISASSEMBLE
Remove push rod seat retainer ring by holding seat
down with push rod while dislodging ring from lifter
body with a pointed tool (Fig: 6-23).
It may be necessary to unseat lifter ball, using plunger
unloader, J-5097, before plunger can be pushed
down.
Inyert 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 tool against a block of wood (Fig.
6-24) until plunger falls out. (It may be necessary to
soak a lifter having a stuck plunger in cleaning sol-
vent for several minutes in order to remove the
plunger).
Drain oil out of lifter body and place all valve lifter
parts in separate compartment of tray from wash
tank 5-5821 (Fig. 6-25).
CAUTION: Valve lifier body and plunger are
selectively fitted and must not be interchanged
with parts o f other liften. Keeping all parts of
lifters together will also aid in trouble diagno-
sis.
CLEAN AND INSPECT
Wash tank 5-582 1 is recommended for cleaning valve lifter
parts. This tank consists of two chambers, a tray and a
cover. One chamber is for cleaning solvent and the other
is for kerosene. Whenever the tank is not being used (and
when parts are soaking), the cover should be installed.
-
Fig. 6-24 Removing Stuck Plunger
Before placing tray of parts in cleaning solvent, first
immerse it in kerosene chamber to remove as much
engine oil as possible. (This reduces contamination of
solvent, thus prolonging its useful life).
Submerge tray in cleaning solvent and allow to soak
for approximately one hour. More time may be re-
quired, depending on varnish condition and effective-
ness of solvent. Light agitation of tray in solvent at
10- 15 minute intervals will hasten cleaning action.
CLEANING SOLVENT KERYSENE
Fig.
6-23
Removing Push Rod Seat Retainer Fig. 6-25 Lifter Wash Tank and Tray