Suzuki 2000 Grand Vitara SQ625 Service Manual page 411

4, (b)
1. Lower crankcase
2. Bolt (10 mm thread diameter)
3. Bolt (8 mm thread diameter)
4. Long bolt (8 mm thread diameter)
Inspect
Check bearings for pitting, scratches, wear or damage.
If any malcondition is found, replace both upper and lower halves.
Never replace either half without replacing the other half.
Main bearing clearance
Check clearance by using gaging plastic according to following pro-
cedure.
1) Remove crankcase.
2) Clean bearings and main journals.
3) Place a piece of gaging plastic to full width of bearing (parallel
to crankshaft) on journal, avoiding oil hole.
1. Gaging plastic
4) Install crankcase to cylinder block.
2, (a)
Tighten crankcase bolts, following sequence in figure. Tighten
crankcase bolts to specified torque.
NOTE:
Tighten 10 mm thread diameter bolts first (following the or-
der shown in figure) then tighten 8 mm thread diameter
bolts.
Tightening Torque
(a): 60 N
3, (b)
(b): 27 N
NOTE:
Do not rotate crankshaft while gaging plastic is installed.
5) Remove crankcase and using scale on gaging plastic envelop,
measure gaging plastic width at its widest point. If clearance ex-
ceeds its limit, replace bearing. Always replace both upper and
lower inserts as a unit.
A new standard bearing may produce proper clearance. If not,
it will be necessary to regrind crankshaft journal for use of
0.25 mm undersize bearing.
After selecting new bearing, recheck clearance.
Bearing Clearance
1. Gaging plastic
2. Scale
ENGINE MECHANICAL (H25 ENGINE) 6A2-87
.
m (6.0 kg-m, 43.5 lb-ft)
.
m (2.7 kg-m, 19.5 lb-ft)
Standard: 0.026 – 0.046 mm (0.0010 – 0.0018 in.)
Limit: 0.060 mm (0.0023 in.)