JDcrawlers Messageboard

Its OK, found the size in the manual, 1/2 Inch Hex Plug.

Thanks for the reply! you dont happen to know the size of the drain bolts on the bottom of the steering clutch sumps? one of them is rounded off and i forgot to grab the other to take into the shop to get a replacement. The are allen/hex head pipe plugs (as we call them) but just dont know the size.

I have rebuilt the steering clutches on my 76 450C and it has a common sump. Daft question (probably) but do i need to fill each side with oil separately? (using the fill holes located at 12 oclock above the rear sprockets on the sides)? or can i just fill them by filling through the transmission fi...

OK, finally got the 4 large bolts undone that hold on the bell housing using heat, and a very long pry bar on the ratchet i was using. The short answer is YES you need to remove the bell housing to get into the clutch/transmission pump.

Job done.

Thanks Jim, im now faced with the issue of these being absolutely rock solid and wont move! thats my next issue...all to get to the transmission pump.

Hello all, i am really pulling my hair out with this one (and ive not got much more left)...... i am needing to replace the seal on the 'transmission pump' as shown behind the cover in this picture (behind the green arrow) [img]https://cdn.shopify.com/s/files/1/0840/4113/8521/files/bell_house.jpg?v=...

Im working on my 1976 JD450 C and i need to remove the bell housing, does anyone know the bolt size (the large 4 bolts - 2 on each side)? in mm looks about 32mm head. The reason im asking is i need to purchase a socket to remove them (i know they are imperial size...) but not sure what size i need t...

Thanks Jim, yes to have just confirmed my next step. I will give it a go this week.

Thanks Jim, Yes i have ordered the seal, yes i see they call it the Transmission Pump , or Clutch Pump, i have ordered the seals for this and im hoping this is where my transmission oil leak is coming from! i must admit, when i pulled the clutch throwout bearing, and undid the locking screw of the s...

Hello All, I finally have my engine out of my 1976 450C and i have removed the clutch throwout bearing (and housing), i need to get into the Transmission Pump (situated behind the clutch throwout bearing and spring) to remove it, but i have the spindle and clutch spring etc in the way, how do i remo...

Thanks again Jim, much appreciated, yes i got the engine out (4 bolts as stated), i now see a shaft with the throwout bearing on it https://cdn.shopify.com/s/files/1/0840/4113/8521/files/IMG_3399.jpg?v=1740083714 Im guessing i need to pull that cover off that is held on with the 3 bolts and the seal...

Looks like the leak is coming from between engine and tranny, already started a dismantle. Any suggestions on engine removal? I already removed skid plate, hood, floor pans, nose, and am cleaning. I see the four bolts holding engine and tranny together, is there anything else I'm missing? I know I ...

OK, next question, does anybody have any recommendations for aftermarket brake bands for a 1976 450C (wet clutch). I have heard horror stories of aftermarket ones, i think my steel bands (see picture in previous post) are original steel bands? reason i say this is they are made of quality steel with...

Thanks Jim, Yes i did all the checks, i discovered that the adjuster mechanism (under the big cast plate) has a spring detached with would not allow adjustment, but while i was in there i thought i may as well replace the bands with new ones, but on removal i did notice that there was about 5mm of m...

Images are at this link, i dont know how else to post them https://pyramidpartsstore.com/products/jd450-c