Cushman TURF-TRUCKSTER, Руководство по обслуживанию и ремонту

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the sleeve advances and slides into the ring, the ring
will be rotating nearly with the speed of the gear, so
that the sleeve can smoothly slide over into the clutch
teeth of the gear.
The initial contactor mesh between sleeve and ring is
determined by the widths of key and slot. The key
clearance in the slot should extend at least a third
(1/3) of the chamfer (see Figure 4H-19).
With the synchronizer properly assembled on the
shaft, push in and twist each synchronizer to see if
the one-third mesh occurs or not; if not, it means that
the overall wear (which is the sum of the wears of
slots, keys and chamfered tooth ends) is excessive
and, in such a case, the entire synchronizer assembly
must be replaced.
Inspect each synchronizer ring for wear of its key
slots by measuring the width of each slot. If the width
reading exceeds the limit shown in Figure 4H-20,
replace the ring.
FORK SHAFT LOCATING SPRINGS
Locating springs are used as retainers for the three
shifter fork shafts. If gears have been slipping out
of mesh, check these springs for strength by measur-
ing their free lengths (see Figure 4H-21), and
replace them if their free lengths are less than 0.826
inch (21.0 mm).
GEAR SHIFT FORK SHAFTS
Check the shift fork shafts at the gear shift lever end
(see Figure 4H-13) for uneven wear. Replace worn
shift fork shafts.
EXTENSION CASE BUSHING
Check the bushing press-fitted into the extension
case for wear by measuring the radial clearance
between bushing bore and sliding yoke as shown in
Figure 4H-22. If the sliding yoke is capable of rattling
in the bush because of advanced wear it will cause
the drive shaft to rattle. For this reason, an extension
case found to allow the drive shaft yoke to rattle in
excess of 0.0078 inch (0.2 mm) must be replaced;
replacement of the bushing alone will not fix the prob-
lem.
DRIVE TRAIN
SECTION 4H. TRANSMISSION
(4-CYLINDER 970 GASOLINE OR DIESEL ENGINES)
4H-11
4H
Figure 4H-19. Checking Key Clearance
Figure 4H-21. Checking Locating
Spring Free Length
Figure 4H-22. Bushing-to-Yoke Clearance
Figure 4H-20. Synchronizer Ring Slot Wear
Standard Service Limit
Spring
1.004 inches 0.286 inch
Free Length
(25.5 mm) (21.0 mm)