Subaru 1600 Service Manual page 87

Fig. 3-90 Correcting valve rocker arm
8. Valve Lifter
1) Solid Valve Lifter
ENGINE
3) Replace rocker shaft spring
washers if worn excessively.
for lifter and
Standard inner diameter of
lifter hole
.000 - 21.021
mm
(0.8268 0.8276
in)
Standard outer diameter of
lifter
- 20.970
mm
(0.8248
Clearance between Standard
lifter and lifter
0.030 - 0.072
mm
(0.0012
hole Limit 0.100
mm
(0.0039
in)
I) Check valve lifters for wear and
damage, and replace or correct if
defective.
2) Check the lifter holes in the
crankcase for damage, etc., and correct
or replace as necessary.
0.8256 in)
0.0028
in)
A5-064
Fig. 3-91 Checking lifter hole
2) Hydraulic Valve Lifter
Hydraulic valve lifter and lifter hole
Standard inner diameter of
20.988 - 21.040 mm (0.8263 0.8283 in)
lifter hole
Standard outer diameter of
20.950 - 20.968 mm (0.8248 0.8255 in)
lifter
Lifter to lifter hole
Standard 0.020 - 0.090 mm (0.0008 - 0.0035 in)
I
clearance
Limit
I
0.100 mm (0.0039 in)
3-50
NOTE:
Be extremely careful to prevent any
foreign matter from getting into the
valve lifter as it is machined to a high
degree of precision.
I) Measure the outer diameter of the
valve lifter. If it is outside the specified
value, replace it. Also check it for
wear or damage and replace it as
necessary.
2) Measure the bore diameter in the
crankcase at the valve lifter location.
If the clearance between the bore
diameter and outer diameter of the
lifter exceeds the specified limit,
replace the lifter.
3) Forcibly insert the push rod seat
with push rod to see if the seat moves
into the valve body. If it does, check
the following reasons and repair it as
follows:
• Air is sucked into the pressure
chamber.
• Plunger-ta-body clearance is too
large.
• Foreign matter and/or damage
exists around check ball and
plunger.
a. Remove the following parts in the
order indicated.
• Clip
• Push rod seat
• Plunger
• Check ball, check ball spring and
check ball retainer
• Plunger spring
NOTE:
a. Never mix up plunger, push rod
seat and valve body amoung valve
lifters.
b. Use a wire (as shown in Fig. 3·92)
to facilitate removal of the plunger.
A5-682
Fig. 3-92