wa 100 komatsu loader

[stven]

our 100 is pouring oil out of rear main seal so I pulled the engine and I don't see anything out of the norm I was hoping someone might have exp with this and could help me out with some info Thanks Steve

 

[Bls repair]

If you saw oil coming out of rear main seal replace it . It doesn’t have to “look” bad to be bad. Check crank for wear ,you may need a speedy sleeve if wear is found.

 

[stven]

If you saw oil coming out of rear main seal replace it . It doesn’t have to “look” bad to be bad. Check crank for wear ,you may need a speedy sleeve if wear is found.

Thank You

 

[rondig]

Stupid question...are you sure it is engine oil?

 

[stven]

Yes I know that was a concern because the hyd pump is in the same locate but we did figure it to be engine oil . The problem I have is the oil was really pouring out so I was hoping to see something obvious. It really is a poor set up the way that the seal is in the bellhousing I thought maybe the oil pump press might be to high or the main bearing is so worn that the oil is just shooting out the seal Thank You

 

[rondig]

Is there an oil journal running back there? With a loose or missing plug?

 

[stven]

That's what I was hoping for but the only other thing in that small area is the back of the camshaft. Thank You

 

[rondig]

Does the camshaft have a "frost plug"

 

[rondig]

Can u run engine out of machine? Should find leak forsure then lol...but if you have out i would change all seals on both ends plus change tranny seals if any

 

[stven]

No you can see the back of the cam and bearing

 

[rondig]

Really ok...im out of my league...i just dont know that engine personally at all....every engine i ever saw had a frost plug or cast closed....good luck though i am out of solutions...

 

[rondig]

What engine do u have in it

 

[funwithfuel]

Really ok...im out of my league...i just dont know that engine personally at all....every engine i ever saw had a frost plug or cast closed....good luck though i am out of solutions...

No Rondig, you're on point! He can see the cam and bearing. the freeze plug must have popped out. It shouldn't be in the bellhousing though, I wouldn't think. Knock a new plug in and move along.