1D-98 Engine Mechanical: For J20 Engine
6) Remove housing, and using scale (2) on gauging
plastic envelop (1), measure gauging plastic width at
its widest point.
Journal clearance
If measured camshaft journal clearance exceeds
limit, measure journal (housing) bore and outside
diameter of camshaft journal. Replace camshaft or
cylinder head assembly whichever the difference
from specification is greater.
Camshaft journal
Wear of Tappet and Shim
Check tappet and shim for pitting, scratches, or damage.
If any malcondition is found, replace.
Measure cylinder head bore and tappet outside diameter
to determine cylinder head-to-tappet clearance. If
clearance exceeds limit, replace tappet or cylinder head.
Cylinder head bore and tappet outside diameter
Oil Relief Valve
Check oil relief valve for clogging and ball for being
stuck.
Standard
Limit
0.020 – 0.074 mm (0.0008 –
0.0029 in.)
0.12 mm (0.0047 in.)
Item
Standard
Camshaft journal bore
diameter. (IN & EX) [A]
26.000 – 26.033 mm
(1.0236 – 1.0249 in.)
Camshaft journal O.D. (IN &
EX) [B]
25.959 – 25.980 mm
(1.0221 – 1.0228 in.)
IYSQ01143107-01
I5JB0A142036-01
Item
Standard
Limit
Tappet outside
diameter [A]
32.456 – 32.472 mm
(1.2778 – 1.2784 in.)
—
Cylinder head bore
[B]
32.500 – 32.525 mm
(1.2795 – 1.2805 in.)
—
Cylinder head to
tappet clearance
0.028 – 0.069 mm
(0.0011 – 0.0027 in.)
0.15 mm
(0.0059 in.)
I2RH0B140085-01
I5JB0A142038-01
I2RH01140111-01
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