Service manual

CRANKSHAFT
Removal And Installation
Remove the oil pan. (See Page 7–81.)
Remove the oil pump. (See Page 7–82.)
Remove the crankshaft pulley, timing gearcase cover and
timing gears. (See Page 7–71.)
Remove the flywheel.
Remove the connecting rod cap. (See Page 7–57.)
Remove the main bearing cap. (See Page 7–64.)
Lift the crankshaft out of the engine block.
Checking Tuffriding (Soft Nitriding) Coating
Clean the crankshaft thoroughly using an organic solvent.
Make sure there is no oil or grease in the area to be tested.
Using a glass rod, put a drop of cupric ammonium chloride
5/10% solution at the test location [A].
If no change takes place after an interval of 30–40
seconds, the crankshaft can be re–used if within
specifications.
Replace the crankshaft, if within the 30–40 seconds, the
original color of the solution (light blue in color) becomes
transparent where the test solution was dropped and will
discolor to a copper color.
Immediately after the test is completed, wipe off the area
with a cloth and thoroughly rinse with water.
NOTE: Since the crankshaft is tuffride coated it
cannot be reground.
Checking The Crankshaft
Check the crankshaft connecting rod journals [B].
Standard – 2.0833–2.0839 inch (52,915–52,930 mm)
Limit – 2.0829 inch (52,906 mm)
A
B–08243
The sliding surface
of the pin
or journal
The portion to be tested
shall be held horizontally so
as not to let the test
solution flow.
Approximately
0.393 inch (10 mm)
No testing solution
near the oil hole.
853, 853H Loader
–7–67– Service Manual
B
B–08244