Cylinder Head; Cylinder Block - Yamaha TDM850 User Manual

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2»2 Engine, clutch and transmission
Camshafts
Inlet lobe height 1991 to 1995 TDM models and
XTZ models
Standard ................................................................................................
Service limit (min) .................................................................................
1996-on TDM models and TRX models
Standard ...............................................................................................
Service limit (min) ................................................................................
Exhaust lobe height - all models
Standard ....................................................................................................
Service limit (min) ....................................................................................
Journal diameter ............................................................................................
Journal holder diameter ................................................................................
Journal oil clearance ......................................................................................
Runout (max) ..............................................................................................

Cylinder head

Warpage (max) ..............................................................................................
Valves, guides and springs
Valve clearances ............................................................................................
Inlet valve Stem
diameter
Standard ...............................................................................................
Service limit (min) ................................................................................
Guide bore diameter
Standard ..............................................................................................
Service limit (max) .................................................................................
Stem-to-guide clearance
Standard ...............................................................................................
Service limit (max) ..................................................................................
Head diameter ........................................................................................
Face width ..............................................................................................
Seat width ..................................................................................................
Margin thickness ........................................................................................
Exhaust valve Stem
diameter
Standard ...............................................................................................
Service limit (min) ................................................................................
Guide bore diameter
Standard ................................................................................................
Service limit (max) .................................................................................
Stem-to-guide clearance
Standard ..............................................................................................
Service limit (max) ..................................................................................
Head diameter .........................................................................................
Face width ..............................................................................................
Seat width .................................................................................................
Margin thickness .......................................................................................
Valve stem runout (max) ...............................................................................
Valve springs free length (inlet and exhaust)
Standard ...................................................................................................
Service limit (min) ....................................................................................
Valve spring bend (max) ...............................................................................

Cylinder block

Bore TDM and TRX
models
Standard ..............................................................................................
Service limit (max) .................................................................................
XTZ models
Standard ...............................................................................................
Service limit (max) .................................................................................
Warpage (max) .............................................................................................
Ovality (out-of-round) (max) .........................................................................
Taper (max) ...................................................................................................
Cylinder compression ....................................................................................
„ui,
u. i. s, , , ,s„„P ,, sK
B l e iD i l i i
---------------------------------------------------------------1
35.7 to 35.8 mm
35.6 mm
35.95 to 36.05 mm
35.85 mm
35.95 to 36.05 mm
35.85 mm
24.967 to 24.980 mm
25.000 to 25.021 mm
0.020 to 0.054 mm
0.03 mm
0.03 mm
see Chapter 1
5.475 to 5.490 mm
5.445 mm
5.500 to 5.512 mm
5.55 mm
0.010 to 0.037 mm
0.08 mm
25.9 to 26.1 mm
2.06 to 2.46 mm
0.9 to 1.1 mm
0.8 to 1.2 mm
5.460 to 5.475 mm
5.43 mm
5.500 to 5.512 mm
5.55 mm
0.025 to 0.052 mm
0.10 mm
27.9 to 28.1 mm
2.06 to 2.46 mm
0.9 to 1.1 mm
0.8 to 1.2 mm
0.01 mm
37.29 mm
35.2 mm
1.7 mm
89.500 to 89.505 mm
89.6 mm
87.000 to 87.005 mm
87.1 mm
0.03 mm
0.03 mm
0.05 mm
see Chapter 1
. __ Scaned by Stalker
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