ellis93 wrote:fork could be worn funny or rail could have a sloppy rail journal but I'd have to think there would be other side effects to accompany.
One thing about anything automotive....there are no always or nevers
jmd4993 wrote:what is the top cover issue? could you explain i heard about that today.
There could be multiple things happen inside the shift cover......most commonly the shifter stub will wear out,the detents will wear their aluminum bores,shift rail will ride up in its bore throwing the shift fork at an angle thus cocking the synhro assemblies collector ring,making it stick.
one other thing that comes to mind is the pre-load..... simple check here. park your truck on a level surface,knock it out of gear with either the parking brake set or wheels chocked [both would be good] so that theres no bind on the trans. being your truck is 4x4 this next step sucks. you'll have to take off one or your pto covers and see if the mainshaft/output will move forwards or backwards.....any movement is bad.
reason i say to check that is because these trans are the absolute worst at eater the pocket bearing inbetween the input and mainshaft. if there is slack,that can let the mainshaft rare up,angling the fork,and binding the collector. now this wont happen in forth because your shift fork maybe holding the mainshaft straighter.
this is all speculative as im not looking at it
93 D250 ,5 speed,4.11s,k&n autometer tach pyro trans boost guages,GDS 60mm h1c 14cm,honed 5x10,hplp/reg,1/8 timing,M+H M2 fuel pin, tims cooler tubz