DISMANTLING AND RE-ASSEMBLY OF
METERING DISTRIBUTOR/CONTROL UNIT
1. The metering distributor/control
unit can be dismantled without difficulty and special calibration
equipment is not required, providing the following parts are not
(i) The three calibration screws on the end of
the depression chamber.
(ii) The full load setting screw. (These are shown in Figure18 items 2,
3, 4 and 45).
UNLESS THE NECESSARY CALIBRATION EQUIPMENT
(CONSISTING OF A VARIABLE VACUUM SUPPLY 0-28” Hg AND GAUGE
AND SUITABLE TEST RIG) IS AVAILABLE, THE
CALIBRATION SCREWS MENTIONED ABOVE MUST NOT BE
DISTURBED. IF A NEW CONTROL UNIT IS FITTED TO A
DISTRIBUTOR OR VICE-VERSA, OR ANY NEW
PARTS FITTED OTHER THAN SEALS RE-CALIBRATION WILL
CLEANLINESS OF WORK AND TOOLS
As cleanliness of petrol injection equipment
is of vital importance, the working area of the bench, and the tools
should be thoroughly clean at all times. In addition, all the internal
parts of the equipment should be washed in clean kerosene before
re-assembly. The rotor and sleeve assembly is particularly vulnerable to
dirt and damage through mishandling. When removed from the metering
unit, it must be placed where it cannot be knocked or scratched.
2. DISMANTLING METERING DISTRIBUTOR/CONTROL UNIT
(a) Separating the Metering Distributor from
(i) Remove the four nuts which secure the
mixture control unit to the metering distributor.
Note: The balance spring of the cam follower is compressed between these
two units, so they must be held together while the nuts are undone and
then allowed to part slowly. The spring and cam follower are then
(b) Dismantling the Control Unit
(i) Remove cover plate securing screws and take
off cover plate.