Volkswagen Type II Transporter 1200 Series Shop Manual page 40

34-Engine
TO CHECK AND RESET VALVE CLEARANCE
Refer to the specifications at the beginning of this
section for the appropriate setting.
(I) With the cylinder head covers removed, turn the
engine until the cylinder to be adjusted is at firing position.
NOTE: To check that a cylinder is at firing position,
remove the distributor cap; the contact arm on the rotor
should be in line with the contact of the distributor cap
leading to the spark plug of the cylinder to be adjusted.
(2) Using a feeler gauge check both valves on the
cylinder to establish the clearance.
(3) If adjustment is required, loosen the adjusting
screw locknut and turn the adjusting screw in the direction
required to obtain the specified clearance.
( 4) Hold the adjusting screw firmly with a screwdriver
while tightening the locknut. Recheck the clearance to
ensure that no alteration has taken place.
(5) Carry out the same procedure at each pair of valves
on the remaining three cylinders, ensuring that the firing
position is obtained at each cylinder for adjustment.
(6) Ensure that the cylinder head cover gaskets are in
serviceable condition, and instal the covers.
1200/1.!:)00/1600 MOJ)R/,$ FROM JANUARY, '6.1
Valve adjustment should only be carried out when the
engine is in its cold state or with a maximum oil
temperature of l22°F.
The valve clearance with these conditions prevailing
should be adjusted to: Inlet .008"; Exhaust .012". Except
for engines fitted with modified cylinder heads which can
be identified by a sticker on the air intake housing and
square bosses at the base of the rocker shaft studs, valve
clearances for both inlet and exhaust must be adjusted to
.004". This clearance also applies to exchange engines
which are fitted with short replacement rocker shaft studs,
again identified by a sticker on the air intake housing and a
clip on the rocker shaft.
TO ADJUST VALVE CLEARANCES
(I) With the cylinder head covers removed, turn the
engine until the cylinder to be adjusted is at firing position.
Adjust cylinders in the order 1-2-3-4.
NOTE: To check that a cylinder is at firing position,
remove the distributor cap and check that the contact on
the rotor arm is in line with the contact of the distributor
cap leading to the spark plug of the cylinder to be adjusted.
(2) Using a feeler gauge check both valves on the
cylinder to establish the clearance.
(3) If adjustment is required, loosen the adjusting
screw Jocknu t and turn the adjusting screw in the direction
required to obtain the specified clearance. (See the
beginning of this section).
(4) Hold the adjusting screw firmly with a screwdriver
while tightening the locknut. Recheck the clearance to
ensure that no alteration has taken place.
(5) Carry out the same procedure at each pair of valves
on the remaining three cylinders. Turn the engine 180° to
the left each time to bring the cylinder to firing position for
adjustment, again confirm this at the distributor.
(6) Instal the cylinder head covers with new gaskets.
12. I.UBRICATION SYSTEM
1200
MODJ<..'LS
TO JANUARY, 1963
TO REMOVE AND INSTAL OIL FILTER
(I) Remove the drain plug in the bottom plate and
drain the engine oil.
(2) Unscrew the nuts and spring washers and remove
the bottom plate and gasket. Discard the gasket.
(3) Withdraw the filter and remove and discard the
gasket.
Installation is a reversal of the removal procedure.
(I) Thoroughly clean all components in a suitable
solvent, and blow dry with compressed air.
(2) Ensure that the bottom plate is not bent or
distorted, renew all gaskets.
(3) Instal the filter and check that the opening of the
filter is a neat fit around the lift pipe.
40
(4) Tighten the bottom plate securing nuts evenly, but
do not overtighten.
TO REMOVE AND INSTAL OIL COOLER
(I) It will be necessary to remove the fan housing if
not already done, for description. see appropriate section.
(2) Loosen off and remove the oil cooler securing nuts.
(3) Detach the oil cooler and gaskets.
Installation is a reversal of the removal procedure ..
(I)
Renew all gaskets at installation.
(2) Check the oil cooler for leaks at a pressure of 85 psi
and ensure that the nuts and retaining bracket are tight.
(3) Should the oil cooler leak, check the oil pressure
relief valve for a sticky plunger.
(4) Ensure that the hollow ribs of the cooler are not in
contact with one another, and that the partition flap is
secure.