New Holland 469 haybine belt replacement

Oh Boy, have I gotten myself into it this time! Can anyone tell me how to get the belt that drives the wobble box off from the top pulley? Or direct me to a service manual? Only thing I have found online is someone saying "It's a big job"
Thanks for any help.
Kenny

Trying to remember.
I believe you need to separate the gear box at the end of the
pto from the drive system in order to install belt...
I think- if memory serves right, we were fixing gear box and
replaced belt while we were at it since we noticed that that
was the only way to get it in. Figured after 40 years it could
use a new belt.

Not a fun job. You need to remove the bearing in under the back
cover. Take the chains off and pull the entire gearbox.

I don't know if 469s are vastly different from a 488 or kind of close. Here is a 488:
Remove the shield over the slip clutch,
Remove the set screw holding the slip clutch to the gearbox shaft. Tap the slip clutch off the gearbox shaft.
Remove the two roll drive chains.
Go under the back of the haybine and look up to your left right behind the top roll and you will see a bearing and collar. Remove the center three 3/8" bolts that hold the bearing flange to the plate. You do not need to remove the bearing unless it is bad. You only need to remove the bolts holding the bearing flange.
If you have not yet done it loosen the drive belt.
Remove the knife bolt from the wobble arm. At the bottom of the wobble box are three 1/2" bolts that come from the bottom up. Remove these three bolts. These bolts go into the lower bearing plate on the wobble arm. You will see that there is also a spacer plate between the wobble frame and the plate the three bolts went into. Remove this spacer plate. Now you can rotate the lower plate 180 degrees.
Take the belt off the top pulley. Now you have enough slack in the belt to remove it from the wobble box.
Now that the belt is free at the bottom, remove the 3/8" bolts that hold the gearbox side plate to the side of the machine. Once these bolts are removed you can pull the gearbox and side plate away from the machine a couple of inches and you can remove the belt through this opening and over the gearbox. Installation is just the opposite steps.

Alright! Thanks for the replies!
Kenny