Suzuki Engine 2002 GRAND VITARA SQ625, Service Manual

Page: 474 / 834

ENGINE MECHANICAL (H25 ENGINE) 6A2-99
Crankshaft thrust play
1) Measure this play with crankshaft set in cylinder block in the
normal manner, that is, with thrust bearing and lower crank-
case (1) installed. Tighten crankcase bolts gradually as fol-
lows.
a) Tighten all bolts to 42 N·m (4.2 kg-m, 30.5 lb-ft) according
to numerical order in figure.
b) Loosen all bolts until tightening torque is reduced to 0 in
reverse order of tightening.
c) In the same manner as in Step a), tighten them to 42 N·m
(4.2 kg-m, 30.5 lb-ft).
d) In the same manner as in Step a) again, tighten them to
specified torque.
Tightening torque
Lower crankcase bolt (10 mm (0.394 in.) thread diameter)
(a) : 60 N·m (6.0 kg-m, 43.5 lb-ft)
Lower crankcase bolt (8 mm (0.315 in.) thread diameter)
(b) : 27 N·m (2.7 kg-m, 19.5 lb-ft)
2) Use a dial gauge to read displacement in axial (thrust) direc-
tion of crankshaft.
If its limit is exceeded, replace thrust bearing with new stan-
dard one or oversize one to obtain standard thrust play.
Crankshaft Thrust Play
Standard : 0.10 – 0.35 mm (0.0040 – 0.0137 in.)
Limit : 0.38 mm (0.0149 in.)
Thickness of crankshaft thrust bearing
NOTE:
Tighten 10 mm (0.394 in.) thread diameter bolts first (fol-
lowing the order shown in figure), then tighten 8 mm
(0.315 in.) thread diameter bolts.
2. Bolt (10 mm (0.394 in.) thread
diameter)
4. Long bolt (8 mm (0.315 in.) thread
diameter)
3. Bolt (8 mm (0.315 in.) thread diam-
eter)
Thrust Bearing
Standard
Oversize
0.125 mm (0.0049 in.)
2.500 mm (0.985 in.) 2.563 mm (0.1009 in.)
1. Thrust bearing
2. Oil groove