Hard shift

[Anthonyawh]

I have a 1988 K1500 and its had a lot of abuse (use it farming). Anyway Ive been through atleast 4 transmissions now and front transfer case. They work good for awhile then slowly they start shifting into gear really hard and I mean lunge forward about 10 inches hard shift. Is there something the mechanics are missing here or is it that Ive just gotten 4 crappy transmissions? I put lucas in it and it seamed to help alittle if that sheds any light on the issue.

 

[NickTransmissions]

I have a 1988 K1500 and its had a lot of abuse (use it farming). Anyway Ive been through atleast 4 transmissions now and front transfer case. They work good for awhile then slowly they start shifting into gear really hard and I mean lunge forward about 10 inches hard shift. Is there something the mechanics are missing here or is it that Ive just gotten 4 crappy transmissions? I put lucas in it and it seamed to help alittle if that sheds any light on the issue.

What shifts are hard (ie the 1-2 shift, 2-3, 3-4) or all of them?

Typically, the 1-2 starts to feel brutal if the 1-2 accumulator spring breaks; this can be exacerbated by excessive band clearance and an overly aggressive 1-2 feed hole in the spacer plate. Same for the 2-3; the 3-4 is a lot harder to get to shift hard regardless of what you do...

 

[Schurkey]

Ive been through atleast 4 transmissions now and front transfer case.

Front differential?

There is only one transfer case, and it's rearward of the transmission.