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The information described in Maintenance Manual X-7525 under the heading
ENGINE (SEC . 6A) is applicable to models covered by this supplement with the
exception of the following :
SUBJECT
PAGE
NO .
Piston Pins . . . . . . . . . . . . . . . . . . . . . . . . . . .
6A-1
Removal . . . . . . . . . .
.
. . . . . . . . . . . . . . .
6A-1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . .
6A-2
Engine Replacement . . . . . . . . . . . . . . . . . . . . . . .
6A-2
Installation Caution
. . . . . . . . . . . . . . . . . . . . . .
6A-2
The correct piston pin fit in the piston is
.0003" to .0005" loose .
If the pin to piston
clearance is to the high limit (.0005"), the pin
can be inserted in the piston with very little
hand pressure and will fall through the piston
by its own weight .
If the clearnce is .0003",
the pin will not fall through .
It is important
that the piston pin hole be clean and free of oil
when checking pin fit . The pin is a press fit in
the connecting rod.
There is a new Piston Pin Tool Set, J-24086
(figure 1) for use whenever the replacement of
a piston pin is necessary .
The 455 cubic inch
engine (with a piston pin diameter of .9803" -
.9807") has a wide connecting rod pin boss.
Use Pin Guide J-24086-2 (GREEN) for this
engine application .
The Installer J-24086-9
should be set at G-6 when new piston pins are
being installed .
1-24086-9
INSTALLER
J-24086-8
REMOVER
J-24986-10
J-24086-1 THRU -7
BASE
PIN GUIDES A-
182
figure 1-Piston Pin Tool Set J-24086
SECTION 6A
ENGINE
Contents of this section are listed below:
PISTON PINS
PISTON PIN REMOVAL
2. Install
the J-24086-8 Removal Arbor
through the alignment hole in the tool base .
Figure 2-Removing Piston Pin with J-24086-8
6A-1
1 . Position Tool J-24086-11, the Support
Fork of the piston pin tool set, between the
connecting rod and piston. (See figure 2.)
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