Suzuki 2000 Grand Vitara SQ625 Service Manual page 410

6A2-86 ENGINE MECHANICAL (H25 ENGINE)
1. Thrust bearing
2. Oil groove
1. Upper half of bearing
2. Oil groove
Use a dial gauge to read displacement in axial (thrust) direction of
crankshaft.
If its limit is exceeded, replace thrust bearing with new standard one
or oversize one to obtain standard thrust play.
Crankshaft Thrust Play
Standard: 0.11 – 0.31 mm (0.0044 – 0.0122 in.)
Limit: 0.38 mm (0.0149 in.)
Thrust Bearing
Item
Thickness of
crankshaft
thrust bearing
Out-of-round and taper (uneven wear) of journals
An unevenly worn crankshaft journal shows up as a difference in
diameter at a cross section or along its length (or both). This differ-
ence, if any, is determined by taking micrometer readings. If any
one of journals is badly damaged or if amount of uneven wear in the
sense explained above exceeds its limit, regrind or replace crank-
shaft.
Limit on out-of-round and taper: 0.01 mm (0.0004 in.)
Out-of-round: A – B
Taper: a – b
Main Bearings
General information
D Service main bearings are available in standard size and
0.25 mm (0.0098 in.) undersize, and each of them has 5 kinds of
bearings differing in tolerance.
D Upper half of bearing has oil groove as shown in figure. Install this
half with oil groove toward cylinder block.
D Lower half of bearing does not have oil groove.
Standard
0.125 mm (0.0049 in.)
2.500 mm
(0.984 in.) (0.1009 in.)
Oversize
2.563 mm