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6A – 86 ENGINE MECHANICAL
Cylinder Liner Bore Measurement Use a cylinder indicator to measure the cylinder bore at Q, R in the thrust a-a and axial b-b directions of the crankshaft. Q 20 mm (0.8 in) for 4JA1, 4JA1TC and 4JB1T, 4JG2T,
R 140 mm(5.5 in) for 4JA1, 4JA1TC
R 160 mm(6.3 in) for 4JB1T, 4JG2T, 4JH1TC Cylinder Liner Bore (Service Part) mm (in) Grade 4JA1, 4JA1T, 4JB1T 4JG2T, 4JH1TC AX 93.035 – 93.050 (3.6628 – 3.6634) 95.435 – 95.450 (3.7573 – 3.7579) CX 93.051 – 93.066 (3.6634 – 3.6640) 95.451 – 95.466 (3.7579 – 3.7585)
Grade 4JA1TC AX 93.021 – 93.040 (3.6622 – 3.6630)
CX 93.041 – 93.060 (3.6630 – 3.6638)
012L200001
Note:
Cylinder Liner Projection Inspection 1. Hold a straight edge Q along the top edge of the cylinder liner to be measured. 2. Use a feeler gauge R to measure each cylinder liner projection. Cylinder Liner Projection mm (in) Standard 0 – 0.1 (0 – 0.004)
The difference in the cylinder liner projection height
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