Volvo Penta 230, Руководство по ремонту

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AQ131A, 131B, AQ131C, 131D,
151A, 151B, 151C, 151D, 171C, 171D,
171A, 171B 230, 250, 251DOHC
Crankshaft
Crankshaft, axial clearance .................................................................
0.080–0.270 mm 0.080–0.270 mm
(0.0031–0.0106") (0.0031–0.0106")
Main bearing, radial clearance ............................................................. 0.024–0.072 mm 0.024–0.064 mm
(0.00094–0.00283") (0.0009–0.0025")
Crank bearing, radial clearance .......................................................... 0.023–0.067 mm 0.023–0.067 mm
(0.00091–0.00264") (0.00091–0.00264")
Straightness, maximum deviation ........................................................ 0.025 mm 0.025 mm
(0.00098") (0.00098")
Taper Out-of-roundness
Main bearings
Main bearing journals
Out of roundness, max. .......................................................................
0.004 mm 0.004 mm
(0.00016") (0.00016")
Taper, max. .......................................................................................... 0.004 mm 0.004 mm
(0.00016") (0.00016")
Standard diameter ............................................................................... 54.987–55.000 mm 62.987–63.000 mm
(2.1648–2.1654") (2.4798–2.4803")
0.25 mm undersize (0,0098") .............................................................. 54.737–54.750 mm 62.737–62.750 mm
(2.1550–2.1555") (2.4700–2.4705")
0.50 mm undersize (0,0197") .............................................................. 54.487–54.500 mm 62.487–62.500 mm
(2.1452–2.1457") (2.4601–2.4606")
Seat width on crankshaft for thrust bearings
Standard ..............................................................................................
31.96–32.00 mm 35.46–35.50 mm
(1.2583–1.2598") (1.3961–1.3976")
Oversize 1 ........................................................................................... 32.21–32.25 mm –
(1.2681–1.2697")
Oversize 2 ........................................................................................... 32.46–32.50 mm –
(1.2780–1.2795")
The main bearings are available in two makes. The upper and lower
main bearing shell on the same pivot must be of the same make.
In production matched crankshaft bearing shells are used. The
bearing shells are color coded, red, yellow and blue. They are matched
in accordance with one of the following alternatives:
Alternative 1: Two yellow-marked bearing shells.
Alternative 2: One blue-marked and one red-marked bearing shell. The
blue-marked shell to be located on the crankshaft and the red-marked
shell in the bearing cap.
NOTE! Only yellow-marked bearing shells are available for spare parts
purposes.
Connecting rods
Connecting Rod Bearings
Bearing journals
Out of roundness, max. .......................................................................
0.004 mm (0.00016")
Taper, max. .......................................................................................... 0.004 mm (0.00016")
Bearing seat width ............................................................................... 23.9–26.1 mm (0.9409–1.0276")
Standard diameter ............................................................................... 48.984–49.005 mm (1.9285–1.9293")
0.25 mm undersize (0.0098") .............................................................. 48.734–48.755 mm (1.9187–1.9195")
0.50 mm undersize (0.0197") .............................................................. 48.484–48.505 mm (1.9088–1.9096")
Axial clearance at the piston ............................................................... 0.25–0.45 mm (0.0098–0.0177")
Length, center to center ...................................................................... 152 mm (5.9843")
Max. weight difference between connecting rods in the same engine . 20 grams (0.7055 oz.)
Color code