Hey everyone, my names Jack, I’m 24 and from byron bay. I’m stuck in Wollongong with all truck mechanics booked out for weeks so here I am. I’ve just purchased this Isuzu fts 750a for 32k from Sydney with plans to build a 6x2.5m slide on camper for the back.
I’m planning on using it for touring and hauling trailers to make my event company more mobile and efficient.
I know I kooked it by not getting the truck checked over before I bought it but at the time I couldn’t find an available truck mechanic and it felt like an honest sale.
I purchased the truck 1 week ago and don’t want to do the 10hr drive back home untill I know the truck is fully prepped for the drive back up north.
So I’m kinda stuck in Wollongong untill i know the truck is sweet.
It’s an ex railway truck with a 4 inch lift, cherry picker has been deleted and a new tray has been installed. It’s done 196 000kms. Everything seems healthy besides 3rd gear being annoying to change down into and a sound that I can’t seem to diagnose.
The sound only exists beyond 70km+ And gets more consistent with more speed. it’s like a wearing/grinding sound with little none vibration. The sound doesn’t change when accelerating, decelerating and when in neutral, it’s only more noticeable with speed above 70km. Some times the sound disappears for a split second when hitting turbulence.
I’ve changed the following oils, diffs, gearbox, transfer case and engine oil, in being hopeful that it might of been some sort of poor lubrication in one of those components.
That didn’t resolve the sound.
But I did find metal shards in the gearbox oil which would relate to 3rd gear being annoying to change down into.
I also noticed that the transfer case is leaking and is getting fkn hot but not sure if that heat situation is normal. There is also no metal debris in the transfer case oil.
Please tell me if I’m just being paranoid or not, Is this sound normal for a 25yr AWD truck and this is just a common running gear sound of some sort and maybe hearing this because I’m pushing it too hard as it’s top speed is supposed to be around 90kph
could the the sound be that transfer case PTO might be stuck on?
Is it one of output shaft bearings?
is your rig Full time 4wd? do you get any noticeable changes in running gear noises when you hit the highway?
Do you have any idea what’s going on, does this happen with you or anyone else that has the same rig?
What’s do you think?