Pontiac tempest 1968 Service Manual page 264

V-8 E N G I N E 6-47
C L E A N I N G S O L V E N T
• \ .
KEROSENE
..../
CLEANING TRAY
COVER
-CLEAN "KEROSENE
VALVE LIFTER
J - 4 1 6 0 - A
F i g . 6 - 8 1 Lifter Wash Tank and Tray
4. Replace rocker a r m cover.
5 . Inspect condition of push rod cover gasket and
replace i f necessary; replace push rod cover and
tighten screws. New gasket must be cemented se­
curely to push rod cover before installation.
6 . Replace intake manifold using new gaskets and
replace O-ring seal.
VALVE LIFTER-RECONDITION
NOTE: Because of the important part hydraulic
valve lifters play in the operation of an engine and
the close tolerances to which they are manufac­
tured, proper handling, and above all, cleanliness,
cannot be overstressed when servicing these parts.
New lifters are serviced as individual units pack­
aged with a plastic coating. Leave the coating on
until ready to check leak-down rate. It is not nec­
essary to remove the o i l from new lifters p r i o r to
checking leak-down rate since special leak-down o i l
is already i n new l i f t e r s .
RETAINER PUSH
RING ROD
V A L V E
LIFTER
F i g . 6 - 8 2 Removing Push Rod Seat Retainer
F i g . 6 - 8 3 Removing Stuck Plunger
Wash tank and tray J 5 8 2 1 (Fig. 6 - 8 1 ) is recom­
mended for cleaning valve lifters. This tank should
be used only for valve lifters and should be kept
covered when not In use. A l l servicing should be
done In an area removed from grinders or other
sources of dust and foreign material.
Lifters should at a i l times be stored in a covered
box which w i l l aid i n keeping them clean. The lifter
box should be kept dry and as free of o i l as possible.
VALVE L I F T ER—DISASSEMBLE
1. Remove push rod seat retainer ring by holding
seat down with push rod while dislodging spring f r o m
lifter body with a pointed tool (Fig. 6 - 8 2 ) .
2 . Invert lifter and allow push rod seat and plunger
to slide out of body. If plunger sticks in body, place
lifter i n large end of hydraulic valve lifter plunger
remover J 4160-A, with push rod end of lifter down­
ward. Hold tool f i r m l y i n hand with thumb over
lifter body and sharply strike the tool against a block
of wood (Fig. 6 - 8 3 ) until plunger falls out.
NOTE: It may be necessary to soak a lifter having
a stuck plunger in cleaning solvent for several
minutes in order to remove the plunger.
3 . Drain o i l out of lifter body and place a l l valve
lifter parts in separate compartment of tray from
wash tank J 5 8 2 1 (Fig. 6 - 8 1 ) .
CAUTION: Valve lifter body and plunger are se­
lectively fitted and must not be interchanged with
parts of other lifters* (Keeping all parts of lifters
together will also aid in trouble diagnosis.)