LINK-TRACK MASTER 3988323 - Caterpillar

Illustration 1 g00594167
Illustration 2 g00291470
Rear crankshaft sealsThe single lip seal is used for dry applications (A) .The double lip seal is used for wet applications (B) . (1) Carrier housing and flywheel housing (2) Rear seal The rear seal (2) is located distance (X) from rear face (4) of the cylinder block on engines for industrial applications, on engines for marine applications, and on engines for generator sets. Distance (X) is the following distance. ... 15.4 0.5 mm (0.61 0.02 inch) The rear seal (2) is located distance (X) from rear face (4) of the cylinder block on engines for Caterpillar machines. Distance (X) is the following distance. ... 16.0 0.5 mm (0.63 0.02 inch)Note: The original rear seal runs directly on the crankshaft flange. The original seal assembly does not contain a wear sleeve. Replacement seal assemblies contain a wear sleeve (7).
Illustration 3 g00291471
Front crankshaft seal (3) Front seal The front seal (3) is located distance (Y) from front face (5) of the front housing on marine engines, industrial engines, generator set engines, and engines for Caterpillar machines. Distance (Y) is the following distance. ... 2.5 0.5 mm (0.10 0.02 inch) (4) Rear face of block (5) Front housing (6) Pulley (7) Wear sleevesDo not remove the wear sleeves from the seal group. (8) Shipping sleeve for the front sealInstall the front seal (3) in the housing. Remove the shipping sleeve (8). Install the pulley (6).