Valve Lifter Disassembly - Ford COUGAR 1968 Shop Manual

PART 8-3
-
289 And 302 V-8
8-75
FIG.
43-Camshaft Rear Bearing
Bore Plug Installation
the noise is not caused by improperly
adjusted valve lash or by worn rock-
er arms or push rods.
REMOVAL
1.
Remove the intake manifold
and related parts by following steps
1 thru 12 under Intake Manifold Re-
moval.
2. Remove the crankcase ventila-
tion regulator valve from the valve
rocker arm cover.
3. On Thermactor engines, discon-
nect the air hoses from the check
valves. Remove the check valves. Re-
move the valve rocker arm covers.
Loosen the valve rocker arm stud
nuts and rotate the rocker arms to
the side.
4. Remove the valve push rods in
sequence so that they can be installed
in their original positions.
5. Using a magnet, remove the
valve lifters and place them in a rack
so that they can be installed in their
original bores (Fig. 41).
If the valve lifters cannot be re-
moved from their bores because of
excessive varnish, etc., it may be
necessary to use a plier-type tool
(T52T-6500-DJD or 6500-D) or a
claw-type tool to remove the lifters.
Rotate the lifter back and forth to
loosen it from the gum or varnish
that may have formed at the lifter.
INSTALLATION
I. Clean and install the valve lift-
ers in the bores from which they
were removed. If a new lifter(s) is
being installed, check the new lifter(s)
for a free fit in the bore in which it
is to be installed. Lubricate the lifter(s)
before inserting it in the bore.
2. Install the push rods in their
original position. Apply Lubriplate
to the valve stem tips and the push
rod guides in the cylinder head.
3. Position the rocker arms over
the push rods. Perform a valve clear-
ance adjustment as outlined in Part
8-1, Section 2.
4. Install the valve rocker arm
covers. Install the crank case venti-
lation regulator valve in the valve
rocker arm cover. On Thermactor en-
gines, install the check valves. Con-
nect the air hoses to the check valves.
5. Install the intake manifold and
related parts by following steps 2
thru 18 under Intake Manifold In-
stallation.
V A L V E LIFTER DISASSEMBLY
The internal parts of each hy-
draulic valve lifter assembly are
matched sets. D o not intermix the
parts. Kcep the assemblies intact
until they are to be cleaned.
The disassembly and assembly pro-
cedures for Types I and I1 valve lift-
ers are different. Valve lifters should
always be tested after assembly;
refer to the test procedures covered in
Part 8-1. Section I.
T Y P E I
Disassembly
Disassemble and assemble each
lifter spearately. Keep the lifter assem-
blies in proper sequence so they can
be installed in their original bores.
I. Grasp the lock ring with needle
nose pliers to release it from the groove.
It may be necessary to depress the
plunger to fully release lock ring.
2. Remove the pushrod cup, me-
tering valve (disc), plunger and spring.
3. Remove the plunger assembly,
the check valve and the check valve
retainer and plunger spring. Care-
fully remove the plunger spring, the
check valve retainer and the check
valve disc from the plunger.
Assem
bly
Type I hydraulic lifter assembly
is shown in Fig. 44.
I. Place the plunger upside down
on a clean work bench.
2. Place the check valve (disc or
ball check) in position over the oil hole
on the bottom of the plunger. Set the
check valve spring on top of the check
valve (disc or ball check).
3. Position the check valve retainer
over the 'check valve and spring and
push the retainer down into place on
the plunger.
4. Place the plunger spr1ng, and
PUSH RC3 CUP
/
,
METERING VALVE
CHECK VALVE
CHECK VALVE
SPRING
PLUNGER SPRING
BODY
PLUNGER
CHECK
LALVE
RETAINER
A1651-B
FIG.
44-Type
I
Hydraulic Valve
Lifter Assembly
then the plunger (open end up) into
the lifter body.
5. Position the metering valve
(disc) in the plunger, and then place
the push rod cup in the plunger.
6. Depress the plunger, and posi-
tion the closed end of the lock ring in
the groove of the lifter body. With the
plunger still depressed, position the
open ends of the lock ring in the
groove. Release the plunger, and then
depress it again to fully seat the lock
ring.
7. Use the hydraulic valve lifter
leakdown tester (Part 8-1) to fill the
lifters with test fluid.
TYPE I1
Disassembly
Each valve lifter is a matched assem-
bly. If parts of one lifter are inter-
mixed with those of another, improper
valve operation may result. Disassem-
ble and assemble each lifter separ-
ately. Keep the lifter assemblies in
proper sequence so they can be in-
stalled in their original bores.
I. Grasp the lock ring with needle
nose pliers to release it from the groove.
It may be necessary to depress the
plunger to fully release lock ring.
2. Remove the push rod cup, me-
tering valve disc, and the upper meter-
ing valve. Do
not bend the metering
valve or the valve tensioning finger.
3. Remove the plunger assembly,
the check valve and the check valve
retainer and plunger spring. Care-
fully remove the plunger spring, the
check valve retainer and the check
valve disc from the plunger.
Assem
bly
Type I1 hydraulic lifter assembly
is shown in Fig. 45.
I. Place the plunger on a clean