Pressure Washing Question

[Old60Driver]

Probably a stupid question, but I'm wanting to replace both diff fluids, as well as the transfer case fluid.

The old girl has quite a bit of crusted up gunk on the cases. I've done some light scrubbing, but it's on there pretty good. Can I just soak with a bit of degreaser, and pressure wash everything? Any downsides?

Data:
1983 K20
TH400
NP208
14 bolt rear
10 bolt front

 

[PrairieDrifter]

Do it before you change fluids just in case, and for staying clean. If you're really worried about it both the transmission and transfer case have a breather on the top of them, you can temporarily plug those for washing, a bit of a pain. I don't think it's necessary. I've never had an issue. Just don't blast straight down those breathers.

I like gunk original and super clean.

 

[Old60Driver]

Do it before you change fluids just in case, and for staying clean. If you're really worried about it both the transmission and transfer case have a breather on the top of them, you can temporarily plug those for washing, a bit of a pain. I don't think it's necessary. I've never had an issue. Just don't blast straight down those breathers.

I like gunk original and super clean.

Thanks Drifter! I didn't think there was any reason not too, but I'll be careful with the breathers just in case!

 

[Grit dog]

Wash away. Not an issue.

 

[Catbox]

Just don't linger at the sealed areas and you should be fine.

 

[Ricko1966]

Don't know if this will help, I drilled 2 holes in a Sawzall blade and screwed it 2 a wire brush. I use the cordless Sawzall with the wire brush cuts way down on scrub time.