OEM Chevrolet Silverado 3500 Classic Crankshaft Seal

Chevrolet Silverado 3500 Classic Crankshaft Seal Parts and Q&A

• Rear Main Seal
  97209342
  Q: How to replace the Rear Crankshaft Seal on 4.8L, 5.3L, and 6.0L engines on Chevrolet Silverado 3500 Classic?

  A:

  Remove the engine Flywheel and the crankshaft rear oil seal (141) from the rear housing using the crankshaft rear oil seal installer (J 41479) to replace the crankshaft rear oil seal on engines of 4.8l, 5.3l, and 6.0l. Before installation it is necessary to make sure that the Flywheel spacer should be removed if needed and avoid lubricating the inside diameter (ID) of oil seal or crankshaft surface. Always use the new oil seal and note that the new type is a reverse lip style seal that has the shape this side out in order to orient it correctly. Apply clean engine oil to the outside diameter (OD) of the oil seal and the rear housing oil seal bore. Mount the tapered cone and bolts to the back of the crankshaft, securing them in place without overtightening the bolts. Align the rear oil seal on the tapered cone with the this side out facing away from the engine, and then drive the j 41479 threaded rod into the tapered cone up to where it strikes the oil seal. Foresight the oil seal into the tool and rotate the handle of the tool clockwise until the oil seal is tucked upto the rear cover and bottoms in the cover bore. Finally, take out the j 41479 and reintroduce the engine Flywheel.
• Timing Cover Oil Seal, Front
  12580743
  Q: How to replace the front crankshaft seal on Chevrolet Silverado 3500 Classic?

  A:

  Start the crankshaft front oil seal replacement by detaching the crankshaft balancer and the crankshaft oil seal from the front cover. Using oil on the oil seal sealing surface is not allowed and this job requires the use of new crankshaft oil seals. The first step requires you to apply clean engine oil on both the new oil seal outer edge and front cover oil seal bore. The operation to install the crankshaft front oil seal requires J 41478 Crankshaft Front Oil Seal Installer (J 41478) step-by-step. The installation of the crankshaft requires the J 41478 threaded rod with its components (nut, washer, guide, and oil seal) to be inserted into the crankshaft end before applying J 41478 to position the oil seal in the cover bore. Use one wrench to maintain a secure hold on the installer bolt hex before using a second wrench to turn the installer nut clockwise. The operation should continue until the cover bore holds the seal entirely. Check that the front cover bore contains the oil seal properly and equally after using the J 41478 Crankshaft Front Oil Seal Installer. Finally, reinstall the crankshaft balancer.