4.2 i6 questions

[ricpope]

when replacing the crank shaft what all must i do? i have a chilton 's and a haynes but do i have to replace the rear main seal? any directions would be helpful. thanks in advance.

 

[tardis454]

You need to Plastigage your rod and main bearings, and you should always replace the rear main seal when changing a crank. When you install the rear main seal be sure to use an Anaerobic Sealant on the main cap flange surface. This is a must if you don't want the rear main seal to leak. Be careful not to knick the bearing surfaces on the crank when installing the rods. Use a couple of pieces of rubber hose, or some electrical tape to cover the rods bolts.

 

[ricpope]

ok now how do i make sure oil is up to the top before starting the engine?

 

[tardis454]

ok now how do i make sure oil is up to the top before starting the engine?

You'll need a tool to prime the oil pump. You can make (or buy) an oil pump priming tool out of a distributor by removing the distributor gear, and putting the distributor shaft in a 3/8 drill. Pack the oil pump with Lubriplate #105 Engine Assembly Lube, or Vaseline before you prime it.


*Also, make sure you put engine assembly lube on the bearing surfaces before assembling the bearing caps.

*Make sure everything is clean after you Plastigage the crank/rod bearings. Clean them off with Brakleen and a clean rag.