Assembly (continued) – Generac 86640 User Manual
Page 46
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INSTALL PISTON
Assembly (Continued)
STON ASSEMBLY:
1. Install piston rings as shown in Figure 69.
MAIN BEARING CAPS:
Install main bearing caps and tighten bolts to 34-38 foot
pounds (46-52 N-m). Tighten the caps in 2 or 3 stages and in
the sequence shown in Figure 70. Before tightening the
bearing cap bolts, place caps in proper position by shifting
the crankshaft axially. After tightening the berating cap bolts,
check that the crankshaft turns smoothly by hand.
CRANKSHAFT FREE END PLAY
End Play = 0.0024-0.0087 inch (0.06-0.22mm)
Wear Limit = 0.0197 inch (0.50mm)
CONNECTING ROD END PLAY:
Connecting rod end play should be within the following limits;
CONNECTING ROD END PLAY
0.0039-0.0146 inch (0.10-0.37mm)
CRANKSHAFT FREE END PLAY:
Measure crankshaft free end play at the center bearing
(Figure 71). Nominal end play and wear limit are as follows:
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