Purchased an allis chalmers terra tiger recently and doing a minor restoration to freshen it up. Purchased it with the front jackshft that was removed but came with the terra tiger. Replaced the outer bearings and trying to reinstall unit into the body. Not sure why, but when i tightened the flanged inner to outer bearing retainers they do not hold the bearing tight in place and the entire jackshaft assembly is still loose. As far as i can tell i am assembling the jackshaft correctly, as i have a parts manual to reference assembly. Any help is appreciated, john