Hi
I recently got my "dads" OC-4 out of the shed and running again, with some problems. Im not familiar with tracked machinery so i have no clue where to start. The crawler will turn to the left but not to the right. It feeling like there is a brake of some sort on each lever and both left and right will apply and hold the tractor still, but it acts like the clutch or whatever makes this machine turn isnt engaging. If someone could explain how the steerting works on a oc4 i would appreciate it. If someone could also tell a little more from the numbers i have from it that would help too the numbers are:
model: 0C-46-3G
serial: 5WR-492-ST
the id plate is kinda faded so i hope i got to numbers right. any info is appreciated. thanks
Jozef Hoenig
The oc46 came with a spot turn unit . It has steering bands which actuate the spot turn unit clutches . If your steering bands are in good condition and adjusted properly then you probably have a problem in the spot turn unit .
Walter
The spot turn was an option on the OC 46. The ST after the serial number indicates that your machine was originally equiped that way. As Walter said the steering bands actuate the clutches so if the bands are not adjusted correctly it will not work properly. If the bands are ok then you have a steering clutch problem.
When you take the back cover off look closely at the bearings on the outside of the diff. which allow the clutch pack to slip . There is a screw driver slot on the top of the bearing . The clutch pack itself does not give much trouble .
Walter