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MT-52
MANUAL TRANSMISSION (RA60) - COUNTER GEAR
MT0I4-01
Middle
INSPECTION
1. INSPECT SYNCHRONIZER RING SET NO.1
Outer (a) Using a feeler gauge, measure the clearance between
the synchronizer ring set No.1 and the 1st gear.
Standard clearance:
Inner: 1.48 to 2.12 mm (0.0583 to 0.0835 in.)
Inner Middle: 0.68 to 1.92 mm (0.0268 to 0.0756 in.)
Outer: 0.88 to 1.72 mm (0.0346 to 0.0677 in.)
D13950
Minimum clearance:
Inner: 1.48 mm (0.0583 in.)
Middle: 0.68 mm (0.0268 in.)
Outer: 0.88 mm (0.0346 in.)
If the clearance is less than the minimum, replace the synchro-
nizer ring set No.1.
(b) Coat the 1st gear cone with gear oil. Check the braking
effect of the synchronizer ring. Turn the synchronizer ring
in one direction while pushing it against the 1st gear cone.
Check that the ring locks.
D13951
2. INSPECT SYNCHRONIZER RING SET NO.2
Middle
(a) Using a feeler gauge, measure the clearance between
Outer the synchronizer ring set No.1 and the 2nd gear.
Standard clearance:
Inner: 1.48 to 2.12 mm (0.0583 to 0.0835 in.)
Middle: 0.68 to 1.92 mm (0.0268 to 0.0756 in.)
Inner Outer: 0.88 to 1.72 mm (0.0346 to 0.0677 in.)
Minimum clearance:
D13950 Inner: 1.48 mm (0.0583 in.)
Middle: 0.68 mm (0.0268 in.)
Outer: 0.88 mm (0.0346 in.)
If the clearance is less than the minimum, replace the synchro-
nizer ring set No.2.
MT-53
MANUAL TRANSMISSION (RA60) - COUNTER GEAR
(b) Coat the 2nd gear cone with gear oil. Check the braking
effect of the synchronizer ring. Turn the synchronizer ring
in one direction while pushing it against the 2nd gear
cone. Check that the ring locks.
D13951
3. INSPECT REVERSE SYNCHRONIZER RING
(a) Using a feeler gauge, measure the clearance between
the synchronizer ring and the reverse gear.
Standard clearance:
0.70 to 1.30 mm (0.0278 to 0.0512 in.)
Minimum clearance:
0.70 mm (0.0278 in.)
If the clearance is less than the minimum, replace the synchro-
D13952 nizer ring.
(b) Coat the reverse gear cone with gear oil. Check the brak-
ing effect of the synchronizer ring. Turn the synchronizer
ring in one direction while pushing it against the reverse
gear cone. Check that the ring locks.
D13953
4. INSPECT HUB SLEEVE
(a) Using a vernier caliper, measure the width of the groove
of the hub sleeve (A) and thickness of both the gear shift
forks No.1 and No.4 (B) as shown in the illustration.
A Width of the groove of the hub sleeve (A):
No. 1: 11.95 to 12.05 mm (0.4705 to 0.4744 in.)
No. 4: 10.5 to 10.6 mm (0.4134 to 0.4173 in.)
Thickness of the gear shift fork (B):
No. 1: 11.7 to 11.8 mm (0.4606 to 0.4646 in.)
No. 4: 9.76 to 10.24 mm (0.3843 to 0.4031 in.)
(b) Calculate the clearance using the formula below.
Formula:
B Clearance = A - B
Standard:
No.1: 0.15 to 0.55 mm (0.0059 to 0.0217 in.)
No.4: 0.26 to 0.84 mm (0.0102 to 0.0331 in.)
If the clearance is not as specified, replace the hub sleeve and
gear shift fork.
D13954
MT-54
MANUAL TRANSMISSION (RA60) - COUNTER GEAR
(c) Make sure that the hub sleeve and clutch hub slide
smoothly.
If the hub sleeve and clutch hub do not slide smoothly, replace
them.
D13955
5. INSPECT COUNTER GEAR SHAFT
(a) Using a dial indicator, measure the shaft runout.
Maximum runout: 0.03 mm (0.0012 in.)
If the runout exceeds the maximum, replace the counter gear
shaft.
D13990
(b) Using a micrometer, measure the outside diameter of the
counter gear shaft journal surface.
Standard:
Part Outside diameter mm (in.)
A 34.002 to 34.015 (1.3387 to 1.3392)
B 36.985 to 37.000 (1.4561 to 1.4567)
C 47.985 to 48.000 (1.8892 to 1.8898)
D 53.985 to 54.000 (2.1254 to 2.1260)
E 34.002 to 34.015 (1.3387 to 1.3392)
Minimum:
Part Outside diameter mm (in.)
A B C D A 34.002 (1.3387)
E
B 36.985 (1.4561)
C 47.985 (1.8892)
D 53.985 (2.1254)
E 34.002 (1.3387)
If the diameter is less than the minimum, replace the counter
D13991
gear shaft.
6. INSPECT 1ST GEAR
Using a cylinder gauge, measure the inside diameter of the
gear.
Standard inside diameter:
54.015 to 54.040 mm (2.1266 to 2.1276 in.)
Maximum inside diameter:
54.040 mm (2.1276 in.)
If the inside diameter exceeds the maximum, replace the 1st
D14059 gear.
MT-55
MANUAL TRANSMISSION (RA60) - COUNTER GEAR
7. INSPECT 2ND GEAR
Using a cylinder gauge, measure the inside diameter of the
gear.
Standard inside diameter:
60.015 to 60.040 mm (2.3628 to 2.3638 in.)
Maximum inside diameter:
60.040 mm (2.3638 in.)
If the inside diameter exceeds the maximum, replace the 2nd
D14060 gear.
8. INSPECT REVERSE GEAR
Using a cylinder gauge, measure the inside diameter of the
gear.
Standard inside diameter:
51.015 to 51.040 mm (2.0085 to 2.0094 in.)
Maximum inside diameter:
51.040 mm (2.0094 in.)
If the inside diameter exceeds the maximum, replace the re-
D14061 verse gear.
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