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 TM 9-2815-226-34-1
3-18. REPAIR CONNECTING RODS
a. Restore fillets.
(1) Mill rod pads to restore fillet radius of 0.045 0.055 in. (1.143 1.397 mm). Maximum of 1/16 in. (1.59 mm)
depth of metal may be milled off pad to restore radius.
(2) Break sharp edges around pad.
(3) Polish fillet to 16 microfinish.
b. Resize crankpin bore.
NOTE
If crankpin bore specifications were
exceeded as determined in para 3-17,
rod-to-cap mating surface and cap
must be reground and crankpin bore
resized.
(1) Remove old piston pin bushing.
NOTE
ST-1242 connecting rod bushing
driver is used to remove and install
piston pin bushing.
(a) Lay rod horizontally on press with
pin bushing with hole in tool alined
block.
(b) Place knockout ring on mandrel and
insert mandrel through pin bushing.
(c) Press piston pin bushing out of rod.
3-134
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