What should spring tension be on Ironhead clutch?
Make sure the spring tension is adjusted right. The 6 studs on the clutch pack have spacers and 71 and later clutches are supposed to have 11/32 in. gap from the outher surface of the outer drive plate. If the nuts on these studs are tightened all the way down, the clutch will never release. Page 4-6 in the service manual.
When to increase spring tension on a clutch?
DO NOT increase the spring tension any more than is necessary to make the clutch hold. In cases where your adjustment of spring tension is to an already in-service pressure plate, increase the tension on the stud nuts a half turn at a time until the clutch holds.
How are the studs arranged in a clutch?
Simply place the pressure plate into the clutch shell, position the 10 springs over the clutch hub pins and studs, place the spring collar [cover] over the springs so the three [or five] studs line up with the three [or five] holes in the spring cover. Stud holes are arranged to that the cover will only fit one way.
Where is the lock nut on a fourspeed clutch?
Remove the primary cover unless it’s an open system and if it is, you have just saved some time. Remove the lock nut from the push adjusting screw [located in the center of thepressure plate]. Now place a flat washer [that is 1/8″ thick, 1 3/4″ diameter and3/8″ hole] over the adjusting screw and replace the locknut.
Make sure the spring tension is adjusted right. The 6 studs on the clutch pack have spacers and 71 and later clutches are supposed to have 11/32 in. gap from the outher surface of the outer drive plate. If the nuts on these studs are tightened all the way down, the clutch will never release. Page 4-6 in the service manual.
How is the final clutch release adjustment done?
Ready for final clutch release adjustment: Loosen the locknut and back off the adjusting screw until the clutch is engaged (pressure is off the screw) then turn screw inward until the point of no free play. Then turn the adjusting screw outward 1/4 – 1/2 turn to establish the correct amount of free play and tighten the lock nut.
When did IH change the clutch drive sprocket?
On September 21, 1978 starting with crank case (# 779-26 4- 021), the mainshaft clutch gear thrust washer thickness was decreased .020“ from .232” to .212“ (nominal). The transmission drive sprocket hub width was increased .020” to compensate for the clutch gear change.
When did they change the mainshaft clutch gear?
* Changes were made in early 1979 production engines to improve the engagement of the clutch teeth between the mainshaft 2nd gear and the clutch gear. 1) On September 21, 1978 starting with crank case (# 779-26 4- 021), the mainshaft clutch gear thrust washer thickness was decreased .020“ from .232” to .212“ (nominal).
What makes a clutch on a car slip?
To work correctly, the clutch needs the right amount of freeplay in the linkage between the foot pedal and the clutch operating lever. If the amount of freeplay or clearance is low, it results in a slipping clutch.
What’s the best way to adjust the clutch?
The first step in adjusting a clutch is to check the clutch pedal freeplay. This measurement will give you a baseline to go back to and you can then adjust the clutch pedal free play to fall in the manufacturer’s specification range for your vehicle.
What causes slip in a spinlock rope clutch?
Clever mechanical advantages between the handle and the cams provide far greater compression over pervious clutches. Slip is an inevitable side effect of rope Clutches and for the cams to work the need to pressure against the line which compresses with this pressure. Spinlock says 1 inch of slip is not unusual.
Why does my clutch slip under heavy load?
A clutch that doesn’t engage fully, or slips under heavy load, is the normal failure mode of a worn out friction disc of pressure plate that has lost its tension. When you press the clutch, your foot counters the diaphragm spring which presses the friction disc to the flywheel. If the spring pressure is not great enough,
What kind of Springs does a slip clutch use?
The most common setup to apply tension to a plate-type slip clutch uses coil springs. Varying the length, wire diameter and strength, and number of springs provides a base for adjustment of the pressure applied to the slip clutch plates. Plate-type clutches also use Belleville washers.
What happens when you press the clutch pedal?
When the clutch pedal is pressed, a hydraulic fluid is pushed using a master cylinder to a slave cylinder located on the clutch plate. This causes the release bearing (also called the release arm) to move, allowing the diaphragm spring to expand thus releasing the pressure on the pressure plate and clutch disc.