TM 5-3810-289-34
soon as expose d and remove clutch shifter arm.
(i) Unfasten bearing retainer lock (7) and
unscrew bearing retainer nut from housing.
(j) Remove clutch shaft (9) from housing by
tapping pilot end of shaft with soft hammer.
(2) Takedown clutch shaft subassembly.
(a) Unscrew bearing locknut and take-off
bearings. Do not remove bearings unless necessary.
(b) Press sprocket off shaft.
Remove grease fitting.
(3) Disassemble clutch sleeve and hoke.
(a) Remove yoke (16) and sleeve assembly
(13) from clutch.
(b)
Take-off throwout collar (40) by
removing the two bolts and nuts (split collar).
(c) Take eight link pins from levers and
Figure 3-99. Sealing lower end of injector sleeve.
sleeve.
(d) Remove four levers by taking out four
lever pins.
(4) Remove floating plate (20, fig. 3-101).
(5) Take-off driving plate (23).
(6) Remove six release springs.
b.
Inspection and Repair.
Clean all parts
thoroughly and inspect for damage and excessive wear.
If driving plate has been worn to the point where clutch
can no longer be adjusted, replace with new driving
plate. Be sure all clutch lever pin retaining links are in
good condition and in place. Inspect clutch release
springs for good condition; replace damaged or defective
springs.
c. Reassembly and Installation..
(1) Assemble the clutch sleeve and yoke
Figure 3-100. ST-397-3 injector seat cutter dimensions
assembly as a unit (fig. 3-101).
(inches).
(a) Place four levers into yoke (161.
3 0.3161
11 0.0937
(b) Place the lever links and throwout collar
4 0.145/0.155
12 0 923/0.925
on sliding sleeve (13).
5 0.300/0 310
13 0.0053/0.0073
(2) Install yoke and sleeve assembly.
6 0.3125
14 0.0015/0.0025
(3) Install six release springs, the driving
7 0.0937
15 0.040/0.060 R
plate (23), and the floating plate (20).
8 0.250
(4) Step on the floating plate and screw
3-15. Clutch Assembly
yoke and sleeve assembly on hub and back plate (241
a. Removal and Disassembly.
until tight.
(1) Pull shaft and housing assembly.
(5) Reassemble shaft subassembly and
(a) Disconnect control rod from shifter arm
shaft into housing.
outside housing.
(a) Install operating shaft (15i and clutch
(b)
Disconnect transmission chain and
shifter arm in housing.
remove from small sprocket (TM 5-3810-289-12).
(b) Clean roller bearings (10) and press on shaft.
(c) Remove 12 clutch housing bolts (TM 5-
Pull up bearing locknut tight; drill new hole if
3810-289-12).
hole does not line up.
(d) Remove clutch power take-off as a unit
(d) Pack bearing with GAA general purpose
leaving driving ring bolted to flywheel.
grease.
(e) Press off pilot bearing (29, fig. 3-101),
(e) Install shaft (9) into housing (22), then
the remove hub nut (28) and lockwasher (27).
press bearing cups into housing.
(f) Remove clutch with a few sharp taps on
(f) Screw on bearing adjusting nut tight so
end of shaft with soft hammer. (Shaft in hub is tapered).
that shaft cannot be turned, then back up three to four
(g) Loosen operating shaft (15) by unclamping two
notches.
capscrews (18).
(h) Pull operating shaft; remove key (14)
3-33
