Check Crankpin And Bearing Clearance - Isuzu C-240PW-28 Technical Manual

ARMY TM 9-2815-254-24
AIR FORCE TO 36G1-94-2
(8) Compare width of bearing gage attached to either crankshaft or bearing against scale printed on bearing
gage container, refer to FIGURE 3-91.
(9) Standard clearance is 0.0007 to 0.0025 in. (0.018 to 0.065 mm), with a limit of 0.0047 in. (0.12 mm).
(10) lf measured clearance exceeds limit, perform clearance check in accordance with step f.
i. Check crankpin and bearing clearance using bearing gage (PLASTIGAGEPR1) as follows:
(1) Clean crankshaft, connecting rods, bearing cap, and bearings.
(2) Install bearing to connecting rod and bearing cap.
(3) Prevent connecting rod from moving.
(4) Apply engine lubricating oil (MIL-L-2104) to bearing gage to keep it from falling off and attach bearing
gage to crankpin.
(5) Install bearing cap and tighten bolts to 61.5 ft-bs (83.3 Nm).
3-140
FlGURE 3-91. Comparing Bearing Gage
Do not allow connecting rod and crankshaft to move when installing and
tightening bearing cap.
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