Seanable
Registered User
Greetings. I have a 1988 Ford F450 dually 7.3 IDI with a 5 speed. The five speed is either a ZF S5-42, or a ZF S5-47. I bought it with it stuck in second gear. The PO said he drove it to where it was parked for 20 miles stuck in second gear...which tells me the trans is not destroyed. It is 150 miles away and I am trying to fix it and drive it on home so I dont have to rent a trailer and haul it home. Upon removing the shifter, and pulling the top plate off I discovered it was filled with gear oil. I know that is wrong as they are supposed to use mercon V synthetic ATF. After hours of watching videos and reading up I believe it might be a stuck syncro due to the wrong lubricant, or the shift fork jumped out of the groove it is suppoed to ride in. The 1-2 shift rod appears to be stuck in place. My question is...if I drained the gear oil out and filled it with ATF, then pushed to truck forward and backward, will it free up? Does anyone know a manner in which to get this sucker out of gear? Thank you ahead of time.