Connecting Rod Side Clearance; Crankshaft Main Bearing Inspection - Polaris Trail Blazer Service Manual

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Disassembly, cont.

Connecting Rod Side Clearance

counterweight with a feeler gauge (connecting rod big

end side clearance). New measurement should be

between .016"-.020" (.4-.5 mm). Clearance should

not exceed .036" (.9mm).

1. Clean crankshaft thoroughly and oil main and

connecting rod bearings with Polaris Premium 2

engine oil. Carefully check each main bearing on

NOTE:Due to extremely close tolerances, the bearings

must be inspected visually, and by feel. Look for signs

of discoloration, scoring or galling. Turn the outer race

of each bearing. The bearings should turn smoothly and

quietly. The inner race of each bearing should fit tightly

on the crankshaft. The outer race should be firm with

minimal side to side movement and no detectable up

and down movement. Replace any loose or rough bear-

Refer to crankshaft inspection on page 3.40.

Polaris Sales Inc.

EC25PF/EC28PF Engines