Table of Contents
1D-30 Engine Mechanical: For M16A Engine with VVT
9) Install timing chain with crankshaft sprocket referring
to "Timing Chain and Chain Tensioner Removal and
Installation: For M16A Engine with VVT".
10) Install timing chain cover referring to "Timing Chain
Cover Removal and Installation: For M16A Engine
with VVT".
11) Check valve lashes referring to "Valve Lash
(Clearance) Inspection: For M16A Engine with VVT".
12) Perform Steps 3) to 8) of "Installation" of "Timing
Chain Cover Removal and Installation: For M16A
Engine with VVT".
Camshaft, Tappet and Shim Inspection
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.
1
Cam Wear
Using a micrometer, measure cam height "a". If
measured height underruns its limit, replace camshaft.
Cam height "a"
Cam height
Standard
44.929 – 45.089 mm
Intake cam
(1.769 – 1.775 in.)
44.399 – 44.559 mm
Exhaust cam
(1.748 – 1.754 in.)
S6JB0A1416021
2
I3RH0B140043-01
Limit
44.80 mm
(1.764 in.)
44.28 mm
(1.743 in.)
I2RH0B140080-01
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.
6) Tighten camshaft housing bolts in such order as
indicated in the figure a little at a time till they are
tightened to specified torque.
NOTE
Do not rotate camshaft while gauging plastic
is installed.
I2RH0B140081-01
I2RH0B140082-01
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