TM 9-2320-266-34
Table 18-2. Clutch Data
Front clutch
Number of discs. . . . . . . . . 4
Clearance . . . . . . . . . . . . . . . . 0.088" to 0.145"
Number of springs
9
Rear clutch
Number of discs. . . . . . . . . . . . . . . . . 4
Clearance . . . . . . .. . . . . . . . . . . . . . 0.025" to 0.045"
Number of sprlngs. . . . . . . . . . . . . . . . . . . . 1
Band adjustments
Klckdown band (front)
Initial torque. . . . . . . . . . . . . . . . . . . 72 in-lbs
Subsequent backoff . . . . . . . . . . . . . . . . . . 2 turns
Low-reverse band (internal)
Initial torque. . . . . . . . . . . . . . . . . . . . . 72 in-lbs
Subsequent backoff. . . . . . . . . . . . . . . . . . . . 2- 1/2 turns
Figure 18-16. Measuring Front Clutch Plate Clearance.
b. Inspection Procedures.
(1) Check the facing material on all driving discs. Re-
place any discs that are charred, glazed, or heavily pitted.
Also look for evidence of material flaking off the discs; re-
place discs with flaking material or with material that can be
easily scraped off. Check the driving disc splines for wear or
other damage, and replace if necessary.
(2) Inspect steel plate and pressure plate surfaces for
burning. scoring, or damaged driving lugs. Replace if
necessary.
Figure 18-15. Front Clutch Spring Location (Nine Springs).
(3) In the clutch retainer, check all steel plate lug
18-10. Rear Clutch.
grooves for smooth surfaces. The plates must travel freely
in the grooves.
of the rear clutch assembly.
(4) Inspect the ball check in the piston; make sure the
ball moves freely.
(1) Remove the large selective snap ring that secures
the pressure plate in the clutch retainer. Lift the pressure
(5) In the clutch retainer, check all seal surfaces for
plate, clutch plates, and inner pressure plate out of the
nicks or deep scratches; light scratches will not interfere with
retainer.
sealing of neoprene seals.
(2) Carefully pry one end of the wave spring out of its
groove in the clutch retainer. Then remove the wave spring,
and hardness,
spacer ring, and clutch piston spring.
(7) Inspect the piston spring, wave spring, and spacer
(3) Invert the clutch piston retainer assembly and
for distortion or breakage.
bump it on a wood block to remove the piston. Remove all
(8) Inspect the interlocking seal rings on the input
seals from the piston.
shalt for wear or broken locks. Make sure they turn freely
(4) If necessary, remove the snap ring and press the
m the grooves. Do not remove and replace these rings unless
input shaft from the clutch piston retainer.
they are worn or arc binding.
(9) Inspect the input shaft bushing for wear or scores.
Replace if necessary (c, below.
Change 2
18-9
