Crankshaft/Piston/Cylinder Service Information; Crankshaft/Piston/Cylinder Specifications; Crankshaft/Piston/Cylinder Torque Values - Honda VTR1000F Service Manual

12. CRANKSHAFT/PISTON/CYLINDER
SERVICE INFORMATION
TROUBLESHOOTING
CRANKSHAFT
SERVICE INFORMATION
GENERAL
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12-2
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MAIN JOURNAL BEARING
CRANKPIN BEARING
PISTON/CYLINDER
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12-6
12-8
• The crankcase must be separated to service the crankshaft and piston connecting rod. Refer to section 11 for crankcase
separation and assembly.
• Mark and store the connecting rods, bearing caps 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
bearings from the code tables. After selecting new bearings, recheck the oil clearance with a plastigauge. Incorrect oil
clearance can cause major engine damage.
SPECIFICATIONS
Unit· mm (in)
ITEM STANDARD SERVICE LIMIT
Crankshaft
Connecting rod side clearance 0.10 - 0.30 (0.004 - 0.012) 0.40 (0.016)
Crankpin bearing oil clearance 0.032-0.050 (0.0013-0.0020) 0.060 (0.0024)
Main journal bearing oil clearance 0.020-0.038 (0.0008-0.0015) 0.048 (0.0019)
Runout 0.10 (0.004)
Piston, Piston O. D. at 10 (0.4) from bottom 97.965-97.985 (3.8569-3.8577) 97.900 (3.8543)
piston pin, Piston pin hole I. D.
24.002 - 24.008 (0.9450 - 0.9452) 24.03 (0.946)
piston ring Piston pin O. D. 23.994-24.000 (0.9446-0.9449) 23.984 (0.9443)
Piston-to-piston pin clearance 0.002-0.014 (0.0001-0.0006) 0.046 (0.0018)
Piston ring end gap
I
Top 0.25-0.40 (O.010-0.016) 0.55 (0.022)
I
Second
0.40-0.55 (0.016-0.022) 0.70 (0.028)
Oil (side rail) 0.20-0.70 (0.008-0.028) 0.90 (O.035)
Piston ring-to-ring Top 0.065-0.100 (O.0026-0.0039) 0.115 (0.0045)
groove clearance
I
Second 0.035-0.070 (O.0014-0.0028) 0.085 (0.0033)
Cylinder I.D. 98.005-98.025 (3.8585-3.8592) 98.100 (3.8622)
Out of round
0.10 (O.004)
Taper
0.10 (0.004)
Warpage
0.05 (0.002)
Cylinder-to-piston clearance 0.020-0.060 (O.0008-0.0024) 0.200 (0.0079)
Connecting rod small end I. D. 24.020 - 24.041 (0.9457 - 0.9465) 24.051 (0.9469)
Connecting rod-to-piston clearance 0.020-0.047 (0.0008-0.0019)
0.067 (0.0026)
TORQUE VALUES
Connecting rod bolt (standard)
Connecting rod bolt
29 N·m (3.0 kgf.m , 22 Ibf·ft)
+
120
0
20 N·m (2.D kgf·m, 14Ibf·ft)
+
120 0
Apply oil to the threads and seating surface
Apply oil to the threads and seating surface
(checking the oil clearance)
Crankcase 10 mm special bolt
42 N·m (4.3 kgf·m , 31 Ibf·ft) Apply oil to the threads and seating surface
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