DL06K Interim Tire-4 Diesel Engine Disassembly and Reassembly of Major Components
82
z In case that pin’s wear is more than
the limit value, grind the crankshaft
journal and crank pin, and use the
undersized bearings.
z Be sure to use grinding paper which
has been immersed in oil.
< Undersize bearings available >
(a) Standard
(b) 0.25 (Inside diameter is 0.25 mm lesser than the standard size)
(c) 0.50 (Inside diameter is 0.50 mm lesser than the standard size)
(d) 0.75 (Inside diameter is 0.75 mm lesser than the standard size)
(e) 1.00 (Inside diameter is 1.00 mm lesser than the standard size)
z Undersize bearings are available in 2 different sizes as indicated above, and the
crankshaft can be reused through the regrinding as described above.
<“R part” standard value>
(a) Crank pin 'R' : 3.3 ~3.7
(b) Crank journal 'R' : 3.3 ~3.7
CAUTION :
In case of regrinding, the grinding the “R” part of bearing end should be
correctly done and avoid sharp corners or insufficient fillet.
c) Crankshaft run-out
z Support the crankshaft on V blocks.
z Turn the crankshaft with a dial indicator
placed on the surface plate and take
the amount of crankshaft run-out.
(mm)
2) Crankshaft bearing and connecting rod
a) Visual check
z Visually check the crankshaft bearing and connecting rod bearing for scratch,
uneven wear or damage.
Standard Limit
0.06 0.15 or less
"R"
"R" "R"
"R" "R" "R"
EH6OM034
Normal Poor Poor
EH6OM035
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