Piston, Piston Ring and Connecting Rod Removal and Installation

Piston, Piston Ring and Connecting Rod Removal and Installation

Removal
1) Remove engine assembly from vehicle.
2) Remove cylinder head.
3) Mark cylinder number on all pistons, connecting rods and connecting rod caps using silver pencil or quick drying paint.
4) Remove connecting rod bearing caps.
5) Remove carbon from top of cylinder bore before removing piston from cylinder.
6) Push out piston and connecting rod assembly through the top of cylinder bore.
7) Remove connecting rod bearings from connecting rod and connecting rod bearing cap, if necessary.

Installation
1) Apply engine oil to pistons, rings, cylinder walls, new connecting rod bearings and crank pins.

NOTE:
Do not apply oil between connecting rod and bearing or between bearing cap and bearing.

2) Install new connecting rod bearing to connecting rod bearing cap and connecting rod as follows, if removed.
a) Fit tab (1) of connecting rod bearing to groove (2) of connecting rod and bearing cap.
b) Press bearing end (3) until bearing end be comes flush with surface of connecting rod and bearing cap.





3) When installing piston and connecting rod assembly into cylinder bore, point front mark (1) on piston head to crankshaft pulley side.








4) Install piston and connecting rod assembly into cylinder bore. Use special tool (Piston ring compressor) to compress rings. Guide connecting rod into place on crankshaft. Using a hammer handle, tap piston head to install piston into bore. Hold ring compressor firmly against cylinder block until all piston rings have entered cylinder bore.
Special Tool
(A): 09916-77310





5) Install bearing cap (1) as follows.

CAUTION:
Do not apply engine oil to new connecting rod bolt.

NOTE:
Tighten connecting rod bolt gradually till they are tightened to specified torque.

a) Point projection part (2) on cap to cylinder head (bank 1) side.








b) Tighten all connecting rod bolts to 30 Nm (3.1 kgf-m, 22.5 lbf-ft) evenly and gradually.
c) Loosen all bolts until loosening torque becomes 0.
d) In the same manner as Step a), tighten them to 25 Nm (2.5 kgf-m, 18.5 lbf-ft).
e) In the same manner as Step a), retighten them by 110 degrees.
Tightening torque
Connecting rod bolt*: 30 Nm -> 0 Nm -> 25 Nm -> +110 degrees (3.1 kgf-m 0 kgf-m -> 2.5 kgf-m -> +110 degrees, 22.5 lbf-ft 0 lbf-ft -> 18.5 lbf-ft -> +110 degrees)





6) Install cylinder head.