Cant get into First gear but only when its cold out

Hi. Ive had 3 clutches in the last 5 years. Same problem happens. Cant get it into first gear.
This doesnt happen all the time mostly just in the morning.

I took it to a mechanic and they drained the transmission fuel and said there were no metal shards in the fluid and looked good. The mechanic thought it was the sycronizers and sent me to a tansmission place.

Now the transmission place cant get it to stick. they say its working fine, but when I took it to the mechanic it was sticking for them.

The last clutch that got replaced because I couldnt get it into first was because the Diaphram spring got bent and then clutch was working great and now its less than a year and cant get it into first.

What do I do now?

 

My '83 was the same, put it in second first then straight up to first.

 

3 clutches in 5 years doesn't sound normal, unless you're driving 6,000-10,000 miles a month. Do you have any idea why your truck is going through clutches so quickly?

 

Clutch master (and/or slave) cylinder.

Another possibility is the pilot bearing getting gummed up in cold weather - either because of bad grease, damaged bearing, etc. But this isn't likely as I would hope the pilot bearing was replaced with the clutch.

 

I have this issue with 2nd gear on my M5. Assuming everything else is normal and you just can't get into first gear with cold gear oil, but works fine after a few miles when it warms up a bit, then it is the first gear sychronizer is worn (they are usually bronze and do wear with use). I double clutch to deal with mine. In my case, the criminals at Getrag won't sell parts for this trans and I refuse to pay $8K for a reman.

Try double clutching. shift to N, release clutch, rev to 1500, clutch in, shift to first. Try this with various different RPMs until you find the sweet spot. The synchro's job is to spool up the gear dog and when it's worn you need to get this spinning in a different way. The speed you rev to and the time delay between clutch actions determines how closely the gear and the dog are on speed. They need to be at similar speeds to mesh properly. Revving to higher RPMs forces the gear dog to get moving, but the RPM needed varies based upon wear and trans type, as here it is just the slinging oil that is doing the work. Plenty of info on this on the web. Older semi-truck tranny's had no synchros, so these guys had to master double clutching, at least for their over drive.

You will need a slightly different timing / RPM for getting into 1st while rolling.