.
Remove
the
piston pin retainer from each side and
push the pin out.
Remove dirt and deposits
from
the piston pin surfaces
with an approved cleaning solvent. Clean the piston
ring grooves with a groove cleaner or the end of a
piston ring filed to a sharp point (Figure
9-20).
Care
must be taken not to remove metal from the groove
sides.
I
Using a caustic cleaning solvent
or
lZE%Eil
wire
brush
for
cleaning pistons wii/
cause piston damage. Use only parts cleaning solvent.
When cleaning the connecting rods in solvent, include
the rod bore. Blow out all passages with low pressure
compressed air.
Inspection
The following covers inspection procedures for pis-
tons and connecting rods.
Piston Inspection:
Inspect the pistons for fractures at
the ring lands, skirtsand pin bosses. Check forwearat
the ring lands using a new ring and feeler gauge as
shown in Figure9-21. Replace the piston when the side
clearance of the top compression ring reaches
0.008
inch
(0.20
mm).
Cl-1059
FIGURE 9-19. REMOVING PISTON RINGS
CT-1060
FIGURE 9-20. CLEANING RING GROOVES
CT-1061
FIGURE 9-21. CHECKING RING
LAND
9-9
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Redistribution or publication of this document
by any means, is strictly prohibited.
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