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This instruction show you guide on how to remove and install crankshaft rear seal for Perkins 400A and 400D engine. 

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Perkins EST 2025A

Perkins Adapter 3 

Remove Procedures: 

1. Remove bolts (3) and remove the flywheel housing or back plate (2) from the cylinder block. Refer to Disassembly and Assembly, Flywheel Housing - Remove and Install for more information.
 

2. Remove crankshaft rear seal (1) from the cylinder block. Discard the crankshaft oil seal.
 

Installation Procedure
1. Ensure that the mating surface of cylinder block (5) and the flywheel housing or back plate (2) are
clean and free from damage. Inspect dowels (4). If  the dowels are damaged, use new parts for
replacement.
 

2. Ensure that crankshaft flange (6) is clean and free from damage. It is possible to reclaim a crankshaft
flange that has a worn seal surface, or a damaged seal surface by installing a wear sleeve. Refer to
Disassembly and Assembly, Crankshaft Wear
Sleeve (Rear) - Remove and Install for more information.
 

3. Apply clean engine lubricating oil to the flange of crankshaft (6) around the running surface of
crankshaft rear seal.
 

4. Align a new crankshaft rear seal (1) with the flange of crankshaft (6). Carefully install crankshaft rear
seal (1) onto the crankshaft flange.
 

5. Apply a continuous bead of Tooling (A) to the rear face of the cylinder block around the edge of
crankshaft rear seal (1). Apply a continuous bead of Tooling (A) around plug (X).
 

6. Align the flywheel housing or back plate (2) to dowels (4). Install the flywheel housing or back
plate (2) and install bolts (3) to cylinder block (5).
 

Refer to Disassembly and Assembly, Flywheel Housing - Remove and Install for more 

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