Here's some info about my grader for those that aren't familiar with it. It has a 3-71 Detroit, which is a 3 cylinder - 2 stroke diesel that uses a Roots blower for aspiration. Has 113 HP and 299 pound of torque.
When I got it there was 4058 hours on the clock, which still works. I have no reason to believe the hour meter was replaced.
The drive-train is a 3 speed gear transmission with a high and low range. Six speeds forward and two reverse. Maximum speed is 20 mph

according the factory chart inside the cab. It's 4 wheel drive all the time. The rear axle is positive drive to both wheels. The front axle has a differential so only one wheel actually drives.
The brakes are hydraulic with one brake drum on the front drive shaft at the transfer case. No brakes at the wheels.
It has 4 wheel steer. Rear steer is controlled by a hyd. cylinder and a lever attached to a control valve. Front steering has a hyd. cylinder also but is controlled by a tiller (no steering wheel) attached to a control valve. The tiller looks like a horizontal bar (about 12" long) with a handle on each end that pivots in the center. It rotates about 1/4 turn from full right to full left.
One final thing ........ It is fun as all-get-out to use ..... :cool2:
Hearing protection suggested.
Mac