What is the piston pin to piston clearance specification?

0.008 - 0.012 mm (0.0003 - 0.0005 in). The pin should fit into the piston pin hole such that it can be pressed smoothly by finger at room temperature.

What are the piston ring side clearance specifications?

Top ring: 0.040 - 0.073 mm (0.0016 - 0.0029 in); 2nd ring: 0.030 - 0.063 mm (0.0012 - 0.0025 in). Maximum tolerance of side clearance is 0.2 mm (0.008 in).

What special tools are used to mount the engine on the work stand?

KV10106500 or KV10102500, along with KV10109400 and ST05010000.

What are the piston disassembly steps?

1. Place engine on work stand; 2. Remove timing belt cover and timing belt; 3. Remove cylinder head and oil pan; 4. Remove piston.

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Nissan Micra Engine Overhaul: Piston & Crankshaft Removal, Ring Clearance Specs

Engine overhaul disassembly and inspection procedure with piston clearance specs

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Service procedure covering engine disassembly plus piston-pin and ring side clearance inspection.

AI caption April 2005 · Photo 75 of 412

This page (EM-21) from a Nissan factory service manual covers part of the Engine Overhaul section, split into Disassembly and Inspection columns. The Disassembly column describes mounting the engine on a work stand using special tools KV10106500 (or KV10102500), KV10109400, and ST05010000, then removing the timing belt cover and belt, cylinder head, oil pan, and pistons. Crankshaft removal steps follow: remove the rear oil seal retainer, then the bearing caps, loosening the ten bolts in two or three stages in the numerical order shown in the accompanying diagram (positions 1-10), and finally remove the crankshaft. The Inspection column covers piston and piston pin clearance — confirming the pin can be pressed smoothly by finger at room temperature, with a specified clearance of 0.008-0.012 mm (0.0003-0.0005 in) — and piston ring side clearance, giving specifications of 0.040-0.073 mm (0.0016-0.0029 in) for the top ring, 0.030-0.063 mm (0.0012-0.0025 in) for the 2nd ring, and a maximum side clearance tolerance of 0.2 mm (0.008 in). Illustrations (SEM016A, SEM019A, EM131, SEM024A) show the work stand setup, bolt loosening sequence, pin fitting, and thickness gauge use.

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Frequently asked questions

What is the piston pin to piston clearance specification?: 0.008 - 0.012 mm (0.0003 - 0.0005 in). The pin should fit into the piston pin hole such that it can be pressed smoothly by finger at room temperature.
What are the piston ring side clearance specifications?: Top ring: 0.040 - 0.073 mm (0.0016 - 0.0029 in); 2nd ring: 0.030 - 0.063 mm (0.0012 - 0.0025 in). Maximum tolerance of side clearance is 0.2 mm (0.008 in).
How should the crankshaft bearing cap bolts be loosened?: The bolts should be loosened in two or three stages, in the numerical order shown in the diagram (positions 1 through 10).
What special tools are used to mount the engine on the work stand?: KV10106500 or KV10102500, along with KV10109400 and ST05010000.
What are the piston disassembly steps?: 1. Place engine on work stand; 2. Remove timing belt cover and timing belt; 3. Remove cylinder head and oil pan; 4. Remove piston.