c. Oil‐soaked Disk Liners. If lined disks are not badly worn, but are oil‐soaked, wash them thoroughly in clean gasoline and dry with air or heat.
d. Shrunken or Weak Springs. If clutch has been badly overheated as a result of slippage, springs may be found in shrunken or weakened condition. Assuming disk liners are not badly worn, weakened springs are indicated when the three spring tension nuts have been tightened to make the clutch hold until the distance between spring collar and releasing (outer) disk is ⅞ inch. If shrunken or weak springs are suspected, remove them for inspection.
(1) To remove springs, remove push rod adjusting screw lock nut, freeing spring collar and the 10 springs from the releasing (outer) disk assembly.
(2) Measure springs for free length. Free length of new clutch springs is approximately 1½ inches (they may vary plus or minus 1/32 inch). Old springs found to be shrunk 1⁄8 inch (total free length of spring is 1⅜ inch or less) must be replaced with new springs. NOTE: Before replacing springs, select 10 springs that do not vary more than 1/32 inch to make up the assembly.
(3) Assembling Releasing Disk, Springs, and Spring Collar. Place the 10 springs upright on releasing disk to centrally locate each of the 10 stud holes. Place spring collar (flanged edge down) over ends of springs, locating the collar plate “dimples” in ends of 7 of the springs. Place the large washer over push rod adjusting screw; tighten adjusting screw nut, and compress springs lightly. Turn assembly over and observe alinement of springs and disk holes. If necessary, insert a ⅜–inch rod through holes to aline springs. Tighten down adjusting screw nut; assembly is now ready for complete clutch assembly.
51. INSTALLATION OF DISKS (figs. [30], [29], and [28]).
a. It is important when assembling a clutch to start with a lined disk. Install the two steel disks so that the antirattle devices are staggered on splines in the shell, and the “sprung” disk (lined on one side) is the last of the pack, its lined side facing the steel disk. Before installing disks, see that bearing retaining plate lock rings (“R,” [fig. 21]) are in place on the short studs, and are tight against the retaining plate. This is to prevent noise in the clutch.
(1) Install one of the two lined disks on clutch hub studs first.
(2) Next, engage one of the two steel disks with the splines within the clutch shell, with side stamped “OUT” facing outward.
(3) Install the remaining lined disk on the clutch hub studs.