Workshop Manual

14–8 REPAIR STANDARDS
Major Name
Inspection Item
Nominal Assembly
Limit Repair Procedure Comments
Category
of Part Dimension Standard Value
Connecting rod bearing
Use those with projection
arc spread
and proper arc; take care work back side fit
Clearance between
Replace bearing or Take special care with
connecting rod
0.030 – 0.073 0.10
crankshaft crankpin precision
bearing and crankpin
(0.0012 – 0.0029) (0.0039)
Contact between con-
Replace parts with poor
necting rod bearing
contact or abrasions
and crankpin Clearance between Sufficient gap to allow smallend bushing and
0.012 – 0.025 0.05
Replace bushing or pin smooth rotation when
piston pin
(0.00047 – 0.00098)
(0.00197)
holding big end
Connecting rod bearing Crank must not be ground undersize (no undersizes available) Connecting rod and 0.17 – 0.30 0.35
Replace connecting rod
crankpin end play (0.0067 – 0.011) (0.014) Center distance between big end and
192
Reference value
small end (mm)
(7.559)
Big end to small end hole 0.05 or less 0.2
Repair or replace
twist (per 100 mm) (0.002) (0.0079) Big end to small end hole
0.05 or less 0.2
parallelism
(0.002) (0.0079)
Repair or replace
(per 100 mm)
Piston weight difference
20 or less Repair or replace
after assembly g Bearing cap bolt tightening torque
39
Apply molybdenum disul-
(angular tightening
(4.0/29)
fide grease to bolts before
method)
↓
tightening
N·m (kgf-m/lb·ft)
60°– 90°
Main Operating Parts
Connecting Rod