Np435 Growling in 3rd

Reply Subscribe

Thread Tools

Search this Thread

Mar 7, 2005 | 09:23 PM

gcfisher75

Thread Starter

Senior User

Joined: Dec 2002

Posts: 239

Likes: 0

From: Grove City USA

Np435 Growling in 3rd

Hey guys, it's been a long time but I finally got the ambition to swap my junked C6 in for a NP435... But after doing the swap I have a growling noise in the the tranny in 3rd gear... I'm not sure of the gear oil level b/c I haven't gotten it checked yet... I should have. I was wondering if a low level would cause this, or would it happen in all gears. Another curiosity question is what would it damage if it were ran on a low level of lube... not for a very extended amount of time though. But all in all I think I'm going to love the new 4spd I've wanted to do this every since I got the truck about 3 years ago.

Mar 7, 2005 | 10:29 PM

Hooker Bob

Senior User

Joined: Dec 2004

Posts: 444

Likes: 0

From: Duncan,OK

Usually the first thing to go bad on one that has been run low of oil, Is the front bearings on the input shaft. Oil starvation works it's way from front to the back, As far as damage caused anyway. This is a fairly simple gearbox to work on, even for a novice. In most cases all you need is a small parts kit to fix them this includes all seals, gaskets and bearings.

Pat

Mar 10, 2005 | 09:23 PM

plowpusher

Posting Guru

Joined: Sep 2003

Posts: 1,192

Likes: 1

From: lino lakes, mn

by third gear are you saying top gear as in L-1-2-3 or 1-2-3-4 if it is secenerio 1 its probably main shaft bearings either the front(input) or rear(output) if it secenerio 2 its probably clluster bearings or an output bearing low lube will hurt your tranny