So, I bought the truck used and everything about this truck is great minus the shifting difficulties in first. With the truck at a dead stop, the clutch depressed, and the shifter in neutral it can be near impossible to shift into 1st (it’s possible with a lot - emphasis on a lot - of force). No grinding, clashing, knocking in the shift knob - it just wont go into gear. I can shift into 2nd-5th and reverse without too much difficulty. If the truck is in motion, once the vehicle gets between 2-5mph I can easily downshift into 1st. However, if I shift out of 1st and let the truck sit for, say, 5 seconds it is often very challenging to get the truck back into 1st.
I have tried to look up this problem online with limited success. What I found was it could be caused by:
- something wrong with the clutch installation
- a need to bleed the clutch (it’s hydraulic and, although the reservoir is full, the fluid is a bit dirty)
- perhaps a faulty clutch master cylinder
- play in the clutch linkage
- a broken spring in the pressure plate
- a bearing that is starting to go out
- worn synchros in 1st
I am a machinist, not a mechanic, so it’s hard for me to evaluate these ideas (beyond the cost associated with each). Given my limited knowledge of transmissions and my good mechanic friend’s opinion, I think it’s a broken spring in the pressure plate.
Any ideas from you all? This is the original transmission in the truck, it has not been rebuilt (but has been maintained with regular fluid changes), and has a tad over 158,000 miles on it.