TM 5-2420-230-24-2
Section 1 - Cylinder Block - Group 1
Crankshaft Gear - Replacement (1-13)
B Series Shop Manual
Page 1-27
Determining Main Bearing Clearance
Measure the main journal diameters and determine main
bearing clearance.
Main Bearing Journal Diameter
mm
in
82.962
MIN
3.2662
83.013
MAX
3.2682
Out-of-Roundness: 0.050mm [0.002 in]
Taper: 0.013mm [0.0005 in]
Bearing Clearance = Main Bore Diameter with bearing
installed minus () Crankshaft Main Journal Diameter.
Maximum Bearing Clearance: 0.119mm [0.0047 in]
Crankshaft Gear - Replacement (1-13)
Remove the crankshaft gear.
Use a heavy duty puller.
2 lb Steel Hammer, Gear Splitter Part No. 3823585
An optional tool is available to split the crankgear off of
Pre-1991 crankshafts.
Service Tip: Always use a large steel hammer when split-
ting the crankshaft gear. Lead hammers absorb the shock
required to break the gear.
Remove all burrs and make sure the gear surface on the
end of the crankshaft is smooth.
L-230
