Honda GOLDWING GL1800, Руководство по обслуживанию

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CYLINDER/PISTON/CRANKSHAFT
11-3
SERVICE INFORMATION
GENERAL
• The crankcase must be separated to service the piston/connecting rod, crankcase and crankshaft.
• Avoid damaging the pistons against the transmission gears or crankcase when separating the crankcase halves
because the pistons will fall as the crankcase is pulled off them.
• Be careful not to damage the crankcase mating surface when servicing.
• Prior to assembling the crankcase halves, apply sealant to their mating surfaces. Wipe off excess sealant thoroughly.
• Mark and store the connecting rods, bearing caps, pistons, main journal bearing cap bolts and bearing inserts to be sure
of their correct locations for reassembly.
• The crankpin and main journal bearing inserts are select fit and are identified by color codes. Select replacement bear-
ings from the code tables. After selecting new bearings, recheck the oil clearance with plastigauge. Incorrect oil clear-
ance can cause major engine damage.
• Before loosening the crankshaft bearing cap bolts, punch each bolt flange and main journal bearing cap at the same
position to indicate the aligning point for tightening the bolts during reassembly.
SPECIFICATIONS
Unit: mm (in)
TORQUE VALUES
ITEM STANDARD SERVICE LIMIT
Cylinder I.D. 74.000 – 74.015 (2.9134 – 2.9140) 74.10 (2.917)
Out-of-round – 0.10 (0.004)
Taper – 0.10 (0.004)
Warpage – 0.05 (0.002)
Piston,
piston pin,
piston ring Piston O.D. at 10 mm (0.4 in)
from bottom 73.970 – 73.990 (2.9122 – 2.9130) 73.85 (2.907)
Piston pin hole I.D. 18.010 – 18.016 (0.7091 – 0.7093) 18.03 (0.710)
Piston pin O.D. 17.994 – 18.000 (0.7084 – 0.7087) 17.99 (0.708)
Piston-to-piston pin clearance 0.010 – 0.022 (0.0004 – 0.0009) 0.05 (0.002)
Piston ring end
gap Top 0.15 – 0.30 (0.006 – 0.012) 0.5 (0.02)
Second 0.30 – 0.45 (0.012 – 0.018) 0.6 (0.02)
Oil (side
rail) 0.20 – 0.70 (0.008 – 0.028) 0.9 (0.04)
Piston ring-to-
ring groove
clearance Top 0.025 – 0.055 (0.0010 – 0.0022) 0.10 (0.004)
Second 0.015 – 0.045 (0.0006 – 0.0018) 0.10 (0.004)
Cylinder-to-piston clearance 0.010 – 0.045 (0.0004 – 0.0018) 0.10 (0.004)
Crankshaft Connecting rod side
clearance 0.15 – 0.30 (0.006 – 0.012) 0.40 (0.016)
Crankpin bearing oil
clearance 0.028 – 0.046 (0.0011 – 0.0018) 0.06 (0.002)
Main journal
bearing oil
clearance 1, 4 0.012 – 0.030 (0.0005 – 0.0012) 0.06 (0.002)
2, 3 0.020 – 0.038 (0.0008 – 0.0015) 0.06 (0.002)
Runout – 0.03 (0.001)
Crankpin and
main journal Taper – 0.003 (0.0001)
Out-of-
round – 0.005 (0.0002)
Connecting rod bearing cap nut 31 N·m (3.2 kgf·m,
23 lbf·ft) Apply engine oil to the threads and seating
surface.
Crankshaft main journal bearing cap
bolt See page 11-15. Apply engine oil to the threads and seating
surface.
Left crankcase bolt 25 N·m (2.6 kgf·m,
19 lbf·ft)
Right crankcase 10 mm bolt 34 N·m (3.5 kgf·m,
25 lbf·ft) Apply engine oil to the threads and seating
surface.
Right crankcase 6 mm bolt 12 N·m (1.2 kgf·m,
9 lbf·ft)