Connecting Rod Bearing Oil Clearance
WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
Method by Calculation
- Install connecting rod bearings to connecting rod and cap, and tighten connecting rod bolts to the specified torque. Refer to Disassembly and Assembly for the tightening procedure.
- Measure the inner diameter of connecting rod bearing with inside micrometer.
(Bearing oil clearance) = (Connecting rod bearing inner diameter) - (Crankshaft pin journal diameter)
|
Standard |
: |
0.034 - 0.059 mm (0.0013 - 0.0023 in) (actual clearance) |
|
Limit |
: |
0.070 mm (0.0028 in) |
- If the calculated value exceeds the limit, select proper connecting rod bearing according to connecting rod big end diameter and crankshaft pin journal diameter to obtain the specified bearing oil clearance. Refer to How to Select Piston and Bearing .
Method of Using Plastigage
- Remove oil and dust on crankshaft pin journal and the surfaces of each bearing completely.
- Cut plastigage slightly shorter than the bearing width, and place it in crankshaft axial direction, avoiding oil holes.
- Install connecting rod bearings to connecting rod and cap, and tighten connecting rod bolts to the specified torque. Refer to Disassembly and Assembly for the tightening procedure.CAUTION: Do not rotate crankshaft.
- Remove connecting rod bearing cap and bearing, and using scale on plastigage bag, measure the plastigage width.NOTE: The procedure when the measured value exceeds the limit is same as that described in the "Method by Calculation".