So I’ve put transmission back on after replacing ok pan gasket, tried to bleed the clutch was fine, but now the truck isn’t going into gear when truck is running, and ideas?

 

Can you shift into all gears with engine off?
If not then transmission was not in NEUTRAL when shifter was reinstalled, need to pull out shifter and use a screwdriver to center all 3 shift forks(neutral) then reinstall shifter

In this picture you can see 2 of the 3 slots in the shifter forks: https://www.therangerstation.com/Mag...rbushings7.jpg
The 3 must be aligned in the center of opening, and thats Neutral, truck should roll, then you can install the shifter

If you are in gear and try to start the engine does truck try to jump forward?
If so then there is AIR in the clutch system and you need to bleed it
Make sure reservoir is full
Open bleeder on Slave, and put a pan down
Let fluid run out for a minute or two, that should clear "most of the air"
Close bleeder and pump the clutch pedal a few times, see if it feels OK
Then try starting in gear

 

the previous owner bypassed the clutch safety switch, it was running and driving fine until the oil pan gasket replacement, it’s making that thumping noise when trying to put it into gear

 

Clutch safety switch is just for electric systems, nothing that would interfere with clutch hydraulic system

"Thumping noise" does not ring any bells

Please answer the two questions
Can you shift into all gears with engine off?

Can you start engine when its in gear, or does vehicle try to move when starter activates?

 

I can shift into gears when engine is off, it does start when in gear and engine on

 

And when engine is on and trans is in gear what happens when you let up on the clutch pedal?

 

it moves but won’t come out of gear

 

And while its in gear with engine running and clutch pedal down, do you have to hold your foot on the brake to keep it from moving?

That would indicate the slave is not being pushed out far enough to release Clutch disc, so air in the slave or Master
Could be a bad Pilot Bearing as well but that should make a squealing noise, with clutch pedal down and engine running in gear

 

yes I have to push the brake down to keep it from moving, and it’s not making any noises the pilot bearing isn’t squealing

 

Then you still have air in the clutch system

May have to pull the master out to bleed it

 

I got it fixed it needed to be bled fully

 

Good work