Suzuki Engine 2002 GRAND VITARA SQ420 Service Manual page 435

6A2-60 ENGINE MECHANICAL (H25 ENGINE)
Check clearance by using gaging plastic. The procedure is as fol-
lows.
1) Clean housings and camshaft journals.
2) Make sure that all valve lash adjusters are removed and
install camshaft to cylinder head.
3) Place a piece of gaging plastic the full width of journal of
camshaft (parallel to camshaft).
4) Install camshaft housing.
5) Tighten camshaft housing bolts in such order as indicated in
figure a little at a time till they are tightened to specified
torque.
NOTE:
Do not rotate camshaft while gaging plastic is installed.
Tightening torque
Camshaft housing bolt : 12 N·m (1.2 kg-m, 9.0 lb-ft)
[A] : RH bank
[B] : LH bank
6) Remove housing, and using scale (2) on gaging plastic (1)
envelop, measure gaging plastic width at its widest point.
Camshaft journal clearance
Standard : 0.045 – 0.099 mm (0.0018 – 0.0038 in.)
Limit : 0.12 mm (0.047 in.)
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 differ-
ence from specification is greater.
Camshaft journal bore dia. (Intake and Exhaust)
Standard : 26.000 – 26.033 mm (1.0237 – 1.0249 in.)
Camshaft journal O.D. (Intake and Exhaust)
Standard : 25.934 – 25.955 mm (1.0211 – 1.0218 in.)