(7) Remove all carbon from combustion
air. Remove carbon from inside the
areas with a scraper and wire brush.
cell caps and bodies (13 and 14, fig.
Remove valve assemblies (para. 134).
50) with a steel scraper.
(8) Remove the energy cell assemblies
(7) Inspect the energy cells for burned
from the cylinder head (36) by first
spots, especially around the mouth.
removing the energy cell retainer
Pay particular attention to the surface
plugs (11) and retainers (12), and
that touches the cap. Discard the en-
then the caps (13) from the energy
ergy cell body if it is defective.
cell bores in cylinder head.
(8) Inspect the mating surfaces of the
Note. The energy cell cap (13) may be-
caps and cell bodies for scratches or
come stuck to the energy cell body (14). In
burrs which may affect an airtight
this case, the cap may be pried slightly to
seal. Discard defective caps and cells.
break the carbon crust.
(9) Pull the energy cell bodies (14) from
(9) Clean the cylinder bores in the head.
the cylinder head (fig. 53).
Clean the ring of carbon from around
Note. It maybe necessary to first remove
the top of the bore, formed above the
the fuel injection nozzleholders (para 130)
travel of the top ring.
and then drive the energy cells out of the
(10) Inspect cylinder bores for wear. If
cylinder head from the nozzle opening.
wear is less than .008 inch, a set of
Always use a spherical-headed brass drift
oversize rings may be used to restore
for this purpose. Never use a steel drift, as
this would damage the conical entrance of
the engine to satisfactory operating
the metered opening.
condition. If wear exceeds .008 inch,
(10) Remove the manifold (8, fig. 50). Re-
however, pull out the sleeve and dis-
move elbow (31) and thermostat (33).
card it.
(11) Lift sleeves (42) out of seatings in
c. Reassembly and Installation. Reassemble
engine block (69).
and install external parts on the manifold side
(12) Detach housing (65) and oil filler as-
of the engine as shown in figure 50.
sembly (51) from engine block, and
(1) Attach housing (65) and oil filler as-
remove drain cock (63). Remove gear
sembly (51) to engine block (69), and
cover assembly (53).
install drain cock (63). Replace gear
b. Cleaning, Inspection, and Repair.
cover assembly (53).
(1) Clean all metal parts in an approved
(2) Install sleeves (42). If new sleeves
cleaning solvent and dry thoroughly.
are being used, new seals (43) must
Wipe nonmetal parts with a clean, dry
first be assembled in the grooves pro-
cloth.
vided for them.
(2) Clean the cylinder head thoroughly
Caution: The seals must not be
with a solvent or decreasing solution
twisted during, assembly; otherwise
and blow it off with compressed air.
they may leak. Slip fingers under
Inspect carefully for cracks.
seals, sliding them out of the sleeve
(3) Clean and inspect the valve stem
grooves, and run the finger around
guides and all exhaust valve inserts
the inside so that the seal slides into
place without twisting.
(4) Clean the energy cell bores in the cyl-
(3) Drop sleeves back into their respec-
inder head, to insure proper seating
tive bores, after having first lubricated
upon installation.
the seals thoroughly with either hy-
(5) Clean all carbon and other deposits
draulic brake fluid or petroleum jelly.
from the energy cell counterbore,
Then press sleeve in place with the
being careful not to damage the large
palm of the hand (fig. 54).
diameter angular seat on which the
(4) Install manifold (8, fig. 50), elbow
energy cell makes contact.
(31) and thermostat (33).
(6) Clean the four energy cell assemblies
with an approved cleaning solvent, in-
(5) Install energy cell assemblies, after
side and out, and dry with compressed
first replacing any parts found defec-
83
AGO 8166A
