|The valve are adjusted
from under the car. Unless your are very slight of build it is much
easier to raise the car and put it securely on stands.
|Next remove the valve
covers by prying down the bails.
|I always start with
#1 which is at the right rear of the motor (actually toward the
front of the car) looking at it from the rear. The numbers are on
the tinwork in front of each spark plug. The piston on the cyl.
that you are working on must be at top dead center on the compression
stroke. This is when both valves would be completely closed. The
timing mark on the bottom pulley would be lined up with the top
of the motor and the distributor rotor will be pointing to the #1
plug wire location on the cap. Normally about 4:00 o'clock position.
To be sure you can rock the motor back and forth while looking at
the two rockers at the right rear. They should be still while one
of the front two is moving. The valves on the outside are the exhaust
for #1 and #2. The two in the middle are the intakes. Once you are
sure you are on #1 You are ready to adjust these two valves.
|Try to slip a .006 feeler
gauge between the rocker and the end of the valve stem. If it is
loose or tight you loosen the 14mm lock nut on the adjuster screw
and turn the screw in or out as needed. Turn only a little at a
time. When the gauge will slide through with just a slight drag
you can move on to the other valve.
|This is a good time
to check the rocker for side play. There is a wafer washer next
to the rocker on the shaft that holds a little tension on it. If
it is broken the rocker can slip back and forth sideways and will
make a lot of racket. If it is broken you will need to remove the
rocker shaft and replace the washer. It is pretty simple. Just remove
the clip on the end and it all slides off. Just remember to put
everything back where it came off. Anytime you remove the rocker
shaft from one side of the motor those valves will need to be readjusted.
If you are real ambitious while you have the rocker shaft off you
might want to retorque the lower nuts that hold the head on. Now
let's move on to #2 cylinder.
|To do this you just
rotate the motor 1/2 turn counter clockwise. You may be able to
do this by hand. If not you can put a wrench on one of the pulley
nuts. You might want to put a mark at the 180 degree point to help
you find it easier. You can now rock the motor again to be sure
that the next two valves are still while one of the two in the rear
is moving to double check yourself. Now you just do the same as
you did on #1.
|When you are happy with
this cyl. turn the motor over another ½ turn counter clockwise
and move to the other side of the motor to #3 cyl. This is at the
rear of the motor like #1 on the other side. Adjust these and turn
the motor another ½ turn counter clockwise and do #4 valves.
|Renew the gaskets in
the valve covers, reinstall and check for leaks. Simple as that!
You can see this done in detail in our Vol.1 General Maintenance
video available from Bug Me Video.