I am looking for help with the pre-’26 Transmission. After taking the ’24 T out last, I noticed, I think it formed a transmission slip. The car seems to have power, it revs up and shifts good, but on a fairly level road it seems to not want to pick up speed and there is a “pulsing action.” The bands do not seem loose or tight but are dry on the upper part where the spring is. After trying one of the clutch fingers, it must be fully turned, can only get a ¼ turn. Also got the 1/16” in the connection for the low speed. When checking it a notice, that the drums – low and reverse is moving on the shaft. Is this normal?
Thank - Tom
The finger screw is only adjustable by 1/2 turns as it only has one slot. When you are adjust the clutch screws pull the parking brake lever back so the pressure is off the fingers.
You need to start with a base adjustment of all 3 fingers being 13/16" between the clutch collar and the drive plate with the parking brake off. All 3 fingers must be the same, or close to. After you get your base setting put the cotter pins back in or mark the fingers somehow 1,2,3. If you put the cotter pins in as you re-adjust the fingers put the cotter pins back the other direction so you know which finger you adjusted in case the you turn past the next finger to be adjusted. I would start with one full turn in then go from there. Turn in each finger the same amount, put the cotter pins back in, button her up and test drive and repeat as needed.
What do you mean by "moving on the shaft"? If you mean back and forth, yes there will be some back and forth movement as there is space between each drum/hub in the assembly.
Does the problem show up in Low or in High? The clutch is only used when in High. The bands are only for Low and Reverse (And brake of course).
Take the key out of the ignition prior to opening the transmission door.
Tie dental floss through each cotter pin before attempting to remove them. Tie dental floss through each of the new cotter pins when you install them.
Is the emergency brake ALL the way forward or does it bounce back ?? I had trouble with slipping when I installed new brake rods. Adjusted some more play in them and it is real solid lock up no (actually better then when dad had it).
It's important that you understand the bands and the clutch are two distinctly separate things when you talk about slipping.
In "high gear" the clutch is connecting the engine to the drive shaft. The bands are not engaged. Band adjustment won't affect the problem you describe.
The low band clamps around the transmission drum and stops that drum from moving. When this happens the planetary gear set provides a means to power the drive shaft at a slower speed. Any time you step on the clutch pedal it disengages the clutch completely before engaging the low band. So the clutch is completely out of the picture when you are driving in low gear.