TM 5-2815-241-34&P
PISTON AND CONNECTING ROD - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
REPAIR - CONTINUED
39. Block (1)
Connecting rod (2)
a.
Place on block and support in horizontal
position.
b.
Line up mark on guide sleeve (3) with
middle of boss on connecting rod.
c.
Using ST-1242 mandrel set (4), as-
sembly sleeve (5), guide sleeve (3),
and arbor press, push in new piston pin
bushing (6), making sure oil hole in pis-
ton pin bushing and piston pin bore (7)
are lined up.
Push in until assembly sleeve (5)
contacts side of connecting rod boss.
40. Connecting rod (2)
Piston pin
bushing (6)
Using ST-1242 mandrel set (4), removal
sleeve (8), and arbor press, push out.
WARNING
Safety goggles must be worn to prevent eye injury caused by flying steel chips.
41.
Connecting rod (2)
a.
Fill lubricating holes with lubricating
soap to keep out shavings.
b.
Mount in ST-526 boring machine or
equivalent.
Lower mandrel should have only the
two horizontal blades in place to
properly locate the side position of the
piston pin end of connecting rod (2).
c.
Bore piston pin bushing (6) to 2.001-to
2.0015-inch (50.83 to 50.84 mm) in-
side diameter.
d.
Remove from ST-526 boring machine, or
equivalent, and using ST-205 plug
gage, check inside diameter.
If inside diameter is less than 2.001
inch (56.83 mm), continue boring
operation, steps a, b, and c.
If inside diameter is greater than
2.0015 inch (50.84 mm), replace
piston pin bushing (6).
See steps 38 thru 41.
e.
Using scraper, remove any sharp edges
from piston pin bushing (6).
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