Onan CCK Series - Maintenance and Repair Continued; Connecting Rod Service

64 MAINTENANCE AND REPAIR
ing rod in the engine. Correct piston to cylinder clearance appears in
the Table of Clearances.
FIG. 44 ... FITTINGPISTON RINGS TO THE CYLINDER
CYLINDER HEAD.-. Models using gaseous fuelhavea'high com-
pression cylinder head. Beginning in 1959 this
cylinder head has a 3/32" radius boss visible on the thick edge near the
spark plug to identify itfrom standard compression. Bothheadsmust
be of tbesamecompression.
CONNECTING EODS . .,.. The connecting rods' should he serviced at the
. same time the pistouso1'. piston ringsaresel'- .
viced. Rods must'Pe removed with the piston. Rods are :waiIablein
standard or 0 •. 020 inch· undersize .
. The. connecting
rod bearing surface is aluminum aUoy andpr.operclear,,..
ance between the rod bearing surface and the crankshaft bearing surface
is obtamedbprdressingtheconnectingrod cap .. 1'hecorrect clearance
is shown in the Table of Clearances. Use .. a s.heet of 320 grit . or finer
abra.sive onasmooth fiatsllrface. Place the ends of the connecting rod
caR.on.the.abraaive material and carefully dreSs the ends down asne.ed-'
ed.Besurethecap is heldperiectlystraight.Remove all abrasive
fromihe cap befOl'einstalling it. . ,
FIG. 45;..REDUCING CONNECTINGRODCtEARANCE
The.connectingroda.n~pistonass.emblymust be properly ljIigl1.etl·befCJre
reas~embly to the engme. Theah{fningshouJd be done onan3 .'. ..t
alignwtJ gauge by a compef.ent operator.' . Misalignme .t.· . ". . ccura e
. . "', . ... n may cause rapid