Volvo Penta AQ125A, Руководство по ремонту

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57
AQ145A AQ125A
Oil rings
Number on each piston .........................................................
1
Height ................................................................................... 3.975–3.990 mm 3.978–3.990 mm
(0.1565–0.1571 in.) (0.1566–0.1571 in.)
Piston ring clearance in groove ............................................. 0.030–0.065 mm 0.030–0.062 mm
(0.0012–0.0026 in.) (0.0012–0.0024 in.)
GUDGEON PINS
Fully floating. Circlips at both ends in piston
Fit. Connecting rod ................................................................
Push fit
Fit. In piston .......................................................................... Close running fit
Diameter, standard ............................................................... 24.0 mm (0.9449 in.)
Dimension oversize .............................................................. 24.05 mm (0.9469 in.)
CRANKSHAFT
Crankshaft end float .............................................................. 0.037–0.147 mm (0.0015–0.0058 in.)
Main bearings, radial clearance ............................................. 0.028–0.083 mm (0.0011–0.0033 in.)
Big-end bearings, radial clearance ........................................ 0.024–0.070 mm (0.0009–0.0028 in.)
MAIN BEARINGS
Main bearing journals
Diameter, standard ...............................................................
63.45–63.46 mm (2.4980–2.4984 in.)
0.25 mm (0.0100 in.) undersize ............................................. 63.20–63.21 mm (2.4882–2.4886 in.)
0.50 mm (0.0200 in.) undersize ............................................. 62.95–62.96 mm (2.4783–2.4787 in.)
Main bearings
Diameter, standard ...............................................................
63.49–63.52 mm (2.4996–2.5008 in.)
0.25 mm (0.0100 in.) undersize ............................................. 63.24–63.27 mm (2.4898–2.4909 in.)
0.50 mm (0.0200 in.) undersize ............................................. 62.99–63.02 mm (2.4799–2.4811 in.)
BIG-END BEARINGS
Big-end bearing journals
Width of bearing recess ........................................................
24.75–24.85 mm (0.9744–0.9783 in.)
Diameter, standard ............................................................... 53.99–54.00 mm (2.1255–2.1260 in.)
0.25 mm (0.0100 in.) undersize ............................................. 53.74–53.75 mm (2.1157–2.1161 in.)
0.50 mm (0.0200 in.) undersize ............................................. 53.49–53.50 mm (2.1059–2.1063 in.)
Big-end bearing shells
Thickness, standard .............................................................
1.988 mm (0.0783 in.)
0.25 mm (0.0100 in.) undersize ............................................. 2.115 mm (0.0833 in.)
0.50 mm (0.0200 in.) undersize ............................................. 2.242 mm (0.0883 in.)
CONNECTING RODS
End float on crankshaft ......................................................... 0.15–0.35 mm (0.0059–0.0138 in.)
Length, centre-centre ............................................................ 144.9–145.1 mm (5.705–5.717 in.)
CAMSHAFT
No. of bearings ..................................................................... 5
Bearing journals diameter ..................................................... 29.95–29.97 mm (1.1791–1.1799 in.)
Radial clearance: bearing journals ........................................ 0.030–0.071 mm (0.0012–0.0028 in.)
Axial clearance ..................................................................... 0.1–0.4 mm (0.004–0.016 in.)