Onan B43E series - Page 10

DESCRIPTION
MINIMUM MAXIMUM
Inches (mm) Inches (mm)
PISTON PIN
Clearance in Piston ..............................................
Clearance in Connecting Rod
Aluminum Rod
................................................
Diameter ........................................................
PISTON RINGS
Clearance
Ring End Gap in Cylinder
........................................
Top Groove ...................................................
INTAKE VALVE
Stem Diameter ..................................................
Clearance (Stem to Guide) .......................................
Valve Face Angle ................................................
INTAKE VALVE SEAT
Seat Bore Diameter .............................................
Seat Outside Diameter ...........................................
Valve Seat Width ................................................
Valve Seat Angle ................................................
EXHAUST VALVE
Stem Diameter ..................................................
Clearance (Stem to Guide) .......................................
Valve Face Angle ................................................
EXHAUST VALVE SEAT
Seat Bore Diameter ..............................................
Seat Outside Diameter ...........................................
Valve Seat Width ................................................
Valve Seat Angle ................................................
VALVE GUIDE
Inside Diameter .................................................
TAPPET
Body Diameter ..................................................
Bore Diameter ...................................................
Clearance in Bore ...............................................
VALVE SPRINGS INTAKE AND EXHAUST
Valve Spring Length
Valve Spring Free Length (Approx.)
..............................
Valve Open ....................................................
Valve Closed ..................................................
Spring Load @I 1.375 inch (Valve Closed) ..........................
Spring Load @ 1.125 inch (Valve Open) ...........................
GEAR BACKLASH
Timing Gear .....................................................
Oil Pump Gear ..................................................
GOVERNOR
Dashpot to Governor Arm Bracket ................................
0.00004 (0.001 0) 0.00064 (0.01 62) c
0.0002 (0.005)
0.0007
(0.01 8)
0.6875 (17.46) 0.6877
(17.47)
0.003
(0.076) 0.008
(0.203)
0.010 (0.254) 0.020
(0.508)
0.3425 (8.70) 0.3430 (8.71)
0.0010 (0.025) 0.0025 (0.064)
44"
1.4395
(36.56)
1.4405 (36.59)
1.443
(36.65)
1.444 (36.67)
0.031 (0.787)
0.047 (1.194)
45"
0.3410 (8.661) 0.3415 (8.674)
0.0025 (0.064) 0.040 (0.102)
44"
1.1 89 (30.20) 1.190
(30.23)
1.192 (30.28) 1.193 (30.30)
0.031
(0.787) 0.047
(1.1 94)
45O
0.344 (8.74) 0.346 (8.79)
0.7475 (18.99) 0.7480
(19.00)
0.7505 (1 9.06) 0.751
5 (1 9.09)
0.0015 (0.038) 0.003
(0.076)
1.662 (42.21
)
1.1 25 (28.58)
1.375 (34.93)
38
Ib . (17 kg) 42 Ib . (19 kg)
71
Ib . (32 kg) 79 Ib . (36 kg)
0.001 (0.025)
0.006 (0.152)
0.002 (0.051)
0.005
(0.127)
0.040 (1.02) 0.060 (1.52)
3-2
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