Connecting Rod Alignment; Crank Pin And Connecting Rod Bearings; Rod Bearing Clearance - Suzuki Samurai 1986 Service Manual

Connecting rod alignment:

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Mount connecting rod on aligner to check
it for bow and twist and, if either limit is
exceeded, replace it.
Limit on bow
Limit on twist

Crank Pin and Connecting Rod Bearings

Inspect crank pin for uneven wear or damage.
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Measure crank pin for out-of-round or taper
with a micrometer. If crank pin is damaged,
or out-of-round or taper is out of limit,
replace crankshaft or regrind crank pin to
undersize and use undersize bearing.
Connecting
rod bearing size
Standard
0.25 mm (0.0098 in.)
undersize
Out-of-round and
taper limit
Rod bearing:
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Inspect bearing shells for signs of fusion,
pitting, burn or flaking and observe contact
pattern. Bearing shells found in defective
condition must be replaced.
Two kinds of rod bearing are available;
standard size bearing and 0.25 mm under-
size bearing. To distinguish them, 0.25 mm
undersize bearing
3-5-35, but standard size one has no such
number.
Fig. 3-5-35 0.25 mm undersize bearing
3-28
0.05 mm (0.0020 in.)
Crank pin diameter
41.982 - 42.000 mm
(1.6529 - 1.6535 in.) I
41.732 - 41.750 mm
(1.6430 - 1.6437 in.)
0.01 mm (0.0004 in.)
has stamped number

Rod bearing clearance :

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1) Before checking bearing clearance, clean
bearing and crank pin.
2) Install bearing in connecting rod and bear-
ing cap.
3) Place a piece of gaging plastic the full width
of the crankpin as contacted by bearing
(parallel to the crankshaft), avoiding the oil
hole.
4) Install rod bearing cap to connecting rod.
When installing cap, be sure to point arrow
mark on cap to crankshaft pulley side, as
indicated in Fig. 3-5-36. Tighten the cap
nuts to the specified torque, DO NOT turn
crankshaft with gaging plastic installed.
torque
for rod bearing cap
I
3
33 - 37 N-m
3.3 - 3.7 kg-m
24.0 - 26.5 lb-ft
Rod bearing cap
Arrow mark
Crankshaft pulley side
Cap nut