
THE RECIPROCATING PISTON PETROL ENGINE 29
Feeler gauge
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rtQTv^-^^W
Nut tightened
to correct torque
Nut slackened
to finger-tight
Figure 1.55 Checking bearing liner nip or crush
bearing. Their load-carrying capacity is, however, lim-
ited by a modest fatigue resistance that decreases rapidly
with increasing temperatures.
Copper-lead mixtures Harder materials of this type
were originally developed to meet the combination of
increased loads and higher operating temperatures.
They possess a higher fatigue resistance than white
metal alloys, but show inferior embeddability and con-
formability. These disadvantages were largely overcome
by platin