1D-30 Engine Mechanical: For M16A Engine with VVT
Camshaft, Tappet and Shim Inspection
S5JB0A1416022
Intake Cam Timing Sprocket Assembly
Fit intake cam timing sprocket assembly to camshaft (2)
and hold hexagonal section of camshaft by using
spanner or the like.
Check if sprocket (1) is not turned by hand.
If moved, replace intake cam timing sprocket assembly.
Cam Wear
Using a micrometer, measure cam height “a”. If
measured height underruns its limit, replace camshaft.
Cam height “a”
Camshaft Runout
Set camshaft between two “V” blocks, and measure its
runout by using a dial gauge.
If measured runout exceeds limit, replace camshaft.
Camshaft 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 gauging 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 gauging plastic to full width of
journal of camshaft (parallel to camshaft).
5) Install camshaft housing.
Cam height Standard Limit
Intake cam
44.929 – 45.089 mm
(1.769 – 1.775 in.)
44.80 mm
(1.764 in.)
Exhaust cam
44.399 – 44.559 mm
(1.748 – 1.754 in.)
44.28 mm
(1.743 in.)
2
1
I3RH0B140043-01
I2RH0B140080-01
I2RH0B140081-01
I2RH0B140082-01
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