Make sure that new filters have been
installed in a reconditioned injector
which is to be placed in stock. This
precaution will prevent dirt particles
from entering the injector due to a
possible reversal of fuel flow when
installing the injector in an engine other
than the original unit.
1. Clean and remove the valve rocker cover.
2. Remove the fuel pipes from both the injector
and the fuel connectors (Fig. 6).
Immediately after removal of the fuel
pipes from an injector, cover the filter
caps with shipping caps to prevent dirt
from entering the injector. Also protect
the fuel pipes and fuel connectors from
Figure 7. Removing Injector from
entry of dirt or foreign material.
3. Crank the engine to bring the outer ends of
the push rods of the injector and valve rocker
arms in line horizontally.
4. Remove the two rocker shaft bracket bolts and swing the rocker arms away from the injector and valves
5. Remove the injector clamp bolt, special washer, and clamp.
6. Loosen the inner and outer adjusting screws (certain engines have only one adjusting screw and locknut) on
the injector rack control lever and slide the lever away from the injector.
7. Lift the injector from its seat in the cylinder head.
8. Cover the injector hole in the cylinder head to keep foreign material out.
9. Clean the exterior of the injector with clean fuel oil and dry it with compressed air.
The fuel spray from an injector can penetrate the skin. Fuel oil which enters the blood-stream
can cause a serious infection. Therefore, follow instructions and use the proper equipment to
test an injector.