ARM AS- 9Y1521 - Caterpillar

Illustration 1.
Location of new 162-7473 Seal (1) for the camshaft cover. The new 162-7473 Seal (1) can also be used for the valve cover on EUI engines. Location of the new 169-4834 Seal (2) for the crankshaft cover.--------------- END SUPPLEMENT ---------------Description of Change: New seals are used in the camshaft cover, crankshaft cover, and valve cover of 3500 and 3500B engines used in these machines. The changes for the new seals include: * A slightly larger cross section to increase seal compression* A slightly longer length so they do not need to be stretched for installation.* A different seal material that is more compatible with engine oilThese changes will help prevent oil leaks.
Adaptable To: The chart identifies the new and former seals and their applications.
Illustration 1.
Location of new 162-7473 Seal (1) for the camshaft cover. Location of the new 169-4834 Seal (2) for the crankshaft cover. The new 169-4834 Seal (2) can also be used for the valve cover on EUI engines.
Illustration 2.
Location of the new 169-4833 Seal (3) for the valve cover on MUI engines.