2 minute read
ConnectingRodBearing
3. Select piston of the same grade.
A : Piston grade number B : Front mark C : Identification code D : Sub grade number
JPBIA4439ZZ
PISTON SELECTION TABLE
Unit: mm (in) Grade number (Mark) 1 2 [or no mark (piston only)] Cylinder bore Inner diameter 84.000 - 84.010 (3.3071 - 3.3075) 84.010 - 84.020 (3.3075 - 3.3079) Piston skirt diameter 79.670 - 79.680 (3.1366 - 3.1370) 79.680 - 79.690 (3.1370 - 3.1374)
A : Oil hole B : Management code C : Cylinder number D : Big end diameter grade E : Small end diameter grade F : Front mark
NOTE:
Piston is available together with piston pin as an assembly. ConnectingRodBearing
INFOID:0000000006337301
WHEN NEW CONNECTING ROD AND CRANKSHAFT ARE USED 1. Apply connecting rod big end diameter grade stamped on connecting rod side face to the row in the “Connecting Rod Bearing
Selection Table”.
PBIC4003E
2. Apply crankshaft pin journal diameter grade stamped on crankshaft front side to the column in the “Connecting Rod Bearing
Selection Table”.
3. Read the symbol at the cross point of selected row and column in the “Connecting Rod Bearing Selection
Table”. 4. Apply the symbol obtained to the “Connecting Rod Bearing Grade Table” to select connecting rod bearing. WHEN CONNECTING ROD AND CRANKSHAFT ARE REUSED 1. Measure the dimensions of the connecting rod big end diameter and crankshaft pin journal diameter individually. Refer to EM-112, "Inspection" .
A : No. 1 pin journal diameter grade B : No. 2 pin journal diameter grade C : No. 3 pin journal diameter grade D : No. 4 pin journal diameter grade E : No. 1 main journal diameter grade F : No. 2 main journal diameter grade G : No. 3 main journal diameter grade H : No. 4 main journal diameter grade I : No. 5 main journal diameter grade
PBIC3261J
2. Apply the measured dimension to the “Connecting Rod Bearing Selection Table”. 3. Read the symbol at the cross point of selected row and column in the “Connecting Rod Bearing Selection
Table”. 4. Apply the symbol obtained to the “Connecting Rod Bearing Grade Table” to select connecting rod bearing. CONNECTING ROD BEARING SELECTION TABLE
CONNECTING ROD BEARING GRADE TABLE
PBIC4077E
Connecting rod bearing grade table : Refer to EM-138, "Connecting Rod Bearing" .
UNDERSIZE BEARINGS USAGE GUIDE •When the specified connecting rod bearing oil clearance is not obtained with standard size connecting rod bearings, use undersize (US) bearings. •When using undersize (US) bearing, measure the connecting rod bearing inner diameter with bearing installed, and grind the crankshaft pin so that the connecting rod bearing oil clearance satisfies the standard.
