Crankshaft End Play Inspection/Repair

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata, 2004 Mazda MX-5 Miata, and 2003 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

Install the main bearing cap. (Refer to ENGINE DISASSEMBLY/ASSEMBLY , CYLINDER BLOCK DISASSEMBLY/ASSEMBLY (II) , MAIN BEARING CAP ASSEMBLY NOTE .)

Measure the crankshaft end play. If the end play exceeds the maximum, replace the thrust bearing or grind the crankshaft and install an undersize bearing so that the specified end play is obtained.

Standard End Play

0.080-0.282 mm {0.0032-0.0111 in}

Maximum End Play

0.30 mm {0.012 in}

THRUST BEARING SPECIFICATION

Bearing Size - mm {in}	Bearing Thickness - mm {in}
Standard	2.500-2.550 {0.0985-0.1003}
0.25 {0.01} Undersize	2.625-2.675 {0.1034-0.1053}
0.50 {0.02} Undersize	2.750-2.800 {0.1083-0.1102}
0.75 {0.03} Undersize	2.875-2.925 {0.1132-0.1151}

Fig 1: Measuring Crankshaft End Play

Courtesy of MAZDA MOTORS CORP.

Remove the main bearing cap. (Refer to ENGINE DISASSEMBLY/ASSEMBLY , CYLINDER BLOCK DISASSEMBLY/ASSEMBLY (II) , MAIN BEARING CAP DISASSEMBLY NOTE .)