I changed slave cylinder on a 99 ford 250 deisel it didn't grind before now it grinds trying to go in to gear

A MANUAL TRANS MISSION SAME AS MY 2004.
LEARN THAT REVERSE IS THE canary GEAR.(COAL MINERS)
IT HAS NO SYNCRO RINGS. SO LOVE TO GRIND FIRST.

I used to drive a crash box , ford 1958 20ton dump truck at 16 years old, so knew how to double clutch 15 speed (5 +3)brownie box

and raced cars too and blew up vast clutches doing so, all ways but sunday. (and my hands on cures as kid) cars, and motorcycles..
Step1:
first is the slave cylinder and MC must not be leaking fluid.
if yes they are bad,. if MC levels drop BINGO step1 FAILS FIX ME.

is MC reservoir full>? look first. my silly jeep steals fluid from my brake master, but only the top 1/2" is stolen , cute tick that.

test 2: SLAVE CYL. looking , 2 person test.
and the slave must move 1 full inch. or the clutch will be DEAD.
do not buy a new clutch , make sure the slave works 100% first.
my 4wd jeep takes me 10hours to do clutch and I will never skip step1 or 2, .
MY TRUCK IS NOT A CABLE LINKED CLUTCH.
it is MC + slave.

Does the car want to pull when sitting still in gear with your foot on the clutch? If so, I would say that your clutch is not fully engaging and could be the cause of your grinding when changing gears. If not then I would think the clutch is operating fully and the synchros are worn and need replaced. But either way, with metalic fluid being in the slave cylinder dust boot, the slave cylinder needs changed.

Sounds like you have a bad shifter or a bad slave cylinder. Check the fluid in the reservoir and if you're losing some, then you need to see where the leak is coming from. If it's at the slave cylinder, you're in for an expensive repiar.

the gear grinding noise is because the clutch plate is not fully disengaging and the input shaft is still driving. If you did not use the same length of push rod then the slave cylinder is not moving enough to disengage the clutch. Check it out that with the pedal on the floor the piston in the slave cylinder should be almost to the edge of the slave cylinder . That is where It should be to be working properly

Sounds like it was being forced before and through out the syncro to the gear, not a hard thing to fix but very time consuming.

Hi bosslady15,

First of all I think I should say that clutches do not make grinding noises - but transmission gears do.
However, a clutch that is not disengaging properly can make the gears grind when trying to shift from one gear to the next. Also a common source of noise is the clutch throwout bearing. This will make a "grinding" or "growling" noise any time the clutch pedal is depressed. In either of these cases, the only solution is to replace the clutch, throwout bearing, pressure plate and pilot bushing. These all usually come in a clutch kit. If you have an hydraulic clutch with an internal slave cylinder it is recommended to replace the slave cylinder as well and also the flywheel on on vehicles. I'm sorry I cannot be more specific because you did not mention what type of vehicle we are talking about here.

check and make sure your slave cylender is full of fluid, it should be mounted on the firewall, also sounds like you need to bleed the slave cylender.

it may need a new clutch or check the fluid level for the slave cylinder