System Specifications

CYLINDER BORE

NOTE: The cylinder bores should be measured at normal room temperature, 21°C (70°F).

The cylinder walls should be checked for out-of-round and taper with Tool C119 or equivalent. If the cylinder walls are badly scuffed or scored, the cylinder block should be replaced, and new pistons and rings fitted.

Measure the cylinder bore at three levels in directions A and B top measurement should be 10 mm (3/8 in.) down and bottom measurement should be 10 mm (3/8 in.) up from bottom of bore.

CRANKSHAFT JOURNAL DIAMETER AND LIMITS

Limits of taper or out-of-round on any crankshaft journals should be held to 0.005 mm (0.0001 in.).

CRANKSHAFT TORQUE







CRANKSHAFT MAIN BEARING SIZE CODES










CONNECTING ROD BEARINGS





The bearing caps are not interchangeable and should be marked at removal to insure correct assembly.

The bearing shells must be installed with the tangs (8) inserted into the machined grooves in the rods and caps (9). Install cap with the tangs on the same side as the rod.

Fit all rods on one bank until complete.

Limits of taper or out-of-round on any crankshaft journals should be held to 0.005 mm (0.0001 in.). Bearings are available in standard, 0.025 mm (0.001 in.), and 0.254 mm (0.010 in.) undersizes. Install the bearings in pairs. Do not use a new bearing half with an old bearing half. Do not file the rods or bearing caps.





For measuring main bearing clearance and connecting rod bearing clearance use plastigage.

NOTE: The rod bearing bolts should be examined before reuse. If the threads are necked down the bolts must be replaced.

CONNECTING ROD SIDE CLEARANCE





Mount a dial indicator to a stationary point on engine. Locate probe perpendicular to and resting against the connecting rod cap being checked. Move connecting rod all the way to rear of its travel. Zero the dial indicator. Move connecting rod forward to limit of travel and read the dial indicator. Compare measurement to specification listed in engine specifications Repeat procedure for each connecting rod. Turn crankshaft for connecting rod accessibility.


CONNECTING ROD BOLTS





1. Examine connecting rod bolts (7) for stretching. Stretching can be checked by holding a scale or straight edge against the threads.




2. If all the threads do not contact the scale the bolt must be replaced.
3. Before installing the bolts the threads should be cleaned and inspected.
4. Install clean bolts finger tight. Then alternately torque each bolt to assemble the cap properly.
5. Tighten the connecting rod cap bolts to 27 Nm (20 ft. lbs.) Plus 1/4 turn.

HARMONIC BALANCER TORQUE

Tighten the bolt to 200 Nm (148 ft. lbs.).