[Tom Vaught]

REAR MAIN OIL SEAL (REMOVE AND REPLACE)

1) Remove the Oil Pan
2) Remove the Oil Pump and Windage Baffle
3) Remove the Rear Main Bearing Cap
4) Using the Rear Mail Bearing Oil Seal BRASS Tool
remove the original oil seal located in the block
5) Install the new rear main oil seal by first cutting one
rope seal into two sections.
6) Insert one portion of the seal into the seal cavity of
the block until 1 inch of seal is remaining.
7) Repeat step 6 on the opposite side of the crankshaft
in that portion of the block cavity.
8) when you have firmly seated the rope seal around the
crankshaft in the block (the rope seals should be 3/8 inches
lower that the block surface.
Proceed to step 9
9) Using tool J7588 install the second rope seal in the rear
main bearing cap.
10) Remove the seal from the rear main cap and cut 4 pieces
3/8" long in that rope seal.
11) Work two of the 3/8" seal pieces into the rope seal cavities
in the block
12) Work the remaining two 3/8" pieces into the cavities (around
THE CRANK and compress those seals to where they are flush with
the parting line of the block. NO SEAL MATERIAL SHOULD BE ON THE
SURFACE OF THE BLOCK
13) Repeat the steps for the main cap using tool J-7588
14) Once all 4 sections of the seal material is located properly
tighten the main cap to 120 +/- 10 lbs ft.

This is the procedure that was given to me by the World War II
Mechanic who was Head mechanic at my uncle's Pontiac Dealership.

It somewhat resembles the basic Shop Manual instructions but is
hand written and it more detail.

Tom V.

ps One of our PY members (Suntuned) and his dad made me a very nice J-7588
tool years and years ago.