Suzuki RA410, Manual

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INSPECTION
Cam Wear
Using a micrometer, measure cam height “a”. If measured height
is below its limit, replace camshaft.
Camshaft Runout
Set camshaft between two “V” blocks, and measure its runout by
using a dial gauge.
If measured runout exceeds below specified limit, replace cam-
shaft.
Runout limit: 0.10 mm (0.0039 in.)
Camshaft Journal Wear
Check camshaft journals and camshaft housings for pitting,
scratches, wear or damage.
If any malcondition is found, replace camshaft or cylinder head with
housing. Never replace cylinder head without replacing housings.
Check clearance by using gaging plastic. Checking procedure is
as follows.
1) Clean housings and camshaft journals.
2) Remove all tappets with shims.
3) Install camshafts to cylinder head.
4) Place a piece of gaging plastic to full width of journal of camshaft
(parallel to camshaft).
5) Install camshaft housing.
6) Tighten camshaft housing bolts in such order as indicated in fig-
ure a little at a time till they are tightened to specified torque.
NOTE:
Do not rotate camshaft while gaging plastic is placed.
Tightening Torque
11 N·m (1.1 kg-m, 8.0 lb-ft)
6A4-38 ENGINE MECHANICAL
Cam height Standard Limit
Intake cam 37.54 – 37.70 mm
(1.478 – 1.484 in.)
37.41 mm
(1.473 in.)
Exhaust cam 37.05 – 37.21 mm
(1.459 – 1.465 in.)
36.91 mm
(1.453 in.)