Subaru 2009 IMPREZA Service Manual page 1124

MECHANICAL
7) Measure the oil clearance of camshaft journal.
(1) Clean the camshaft cap and the camshaft
journal of the cylinder head.
(2) Place the camshaft on the cylinder head.
(Without installing the valve lifter)
(3) Place a plastigauge across each camshaft
journals.
(4) Gradually tighten the camshaft cap in at
least two steps, in alphabetical order shown in
the figure, and then tighten to the specified
torque. Do not turn the camshaft.
Tightening torque:
T1: 9.75 N·m (1.0 kgf-m, 7.2 ft-lb)
T2: 20 N·m (2.0 kgf-m, 14.8 ft-lb)
(G)
(C)
T1
(E)
(A)
(F)
(B)
T1
(D)
(H)
(5) Remove the camshaft cap.
(6) Measure the widest point of the plastigauge
on each journal. If oil clearance exceeds the
standard, replace the camshaft. If necessary,
replace the camshaft caps and cylinder head as
a set.
Camshaft oil clearance:
Standard
0.037 — 0.072 mm (0.0015 — 0.0028 in)
(7) Completely remove the plastigauge.
Camshaft
(L)
T2
(K)
(J)
T2
(I)
ME-02379
ME-00119
ME(H4DOTC)-66
8) Measure the thrust clearance with setting the
dial gauge at end surface of camshaft. If the thrust
clearance is not within the standard or there is off-
set wear, replace the camshaft caps and cylinder
head as a set. If necessary, replace the camshaft.
Camshaft thrust clearance:
Standard
0.068 — 0.116 mm (0.0027 — 0.0047 in)
ME-00121