GLASS 2037919 - Caterpillar

Industrial Engine3524B (S/N: NPM1-UP)Description Of Change: The new crankshaft seals have triple spiral groove and a non-contact auxiliary/dust lip.Adaptable To: The new 436-1478 Crankshaft Seal Front replaces the former 197-3889 Crankshaft Seal Gp Front.The new 436-1479 Crankshaft Seal Rear replaces the former 175-5290 Crankshaft Seal Gp Rear.The new crankshaft seals are adaptable to the above engines back to first production.This change is effective for the serial numbers S/N:NPM00492-UP.
Illustration 1 g06005436
3524 engine
(1) 3512 rear engine
(2) 3512 front engine
(3) 436-1478 Crankshaft Seal Front
(4) 436-1479 Crankshaft Seal Rear
(5) 155-0423 Crankshaft Seal Gp RearNote: Crankshaft seal (5) on the rear engine was previously released and announced to the field.