TOHATSU BFT75A - Page 22

2-3
dummyheaddummyhead
SERVICE INFORMATION
Unit: mm (in)
PRI: Primary, SEC: Secondary
Part Item Standard Service limit
Connecting
rods
Small end I.D. 17.964 – 17.977 (0.7072 – 0.7078) –
Small end-to-piston pin clearance 0.019 – 0.036 (0.0007 – 0.0014) –
Big end axial clearance 0.15 – 0.35 (0.006 – 0.014) 0.40 (0.016)
Connecting rod big end oil clearance 0.020 – 0.038 (0.0008 – 0.0015) 0.050 (0.0020)
Difference between upper and lower
parts of connecting rod bolt O.D.
0 – 0.05 (0 – 0.002) 0.05 (0.002)
Crankshaft Journal
O.D.
Main 49.976 – 50.000 (1.9676 – 1.9685) –
Pin 39.976 – 40.000 (1.5739 – 1.5748) –
Journal cylindicity (Main/Pin) 0.005 (0.0002) Max. 0.010 (0.0004)
Journal roundness (Main/Pin) 0.005 (0.0002) Max. 0.010 (0.0004)
Crankshaft runout 0.03 (0.001) Max. 0.04 (0.002)
Crankshaft main bearing oil clearance 0.018 – 0.036 (0.0007 – 0.0014) 0.050 (0.0020)
Thrust washer side clearance 0.10 – 0.35 (0.004 – 0.014) 0.45 (0.018)
Camshaft Camshaft axial clearance 0.05 – 0.25 (0.002 – 0.010) 0.50 (0.020)
Camshaft runout 0.03 (0.001) Max 0.04 (0.002)
Journal O.D. 41.935 – 41.950 (1.6510 – 1.6516) –
Cam
height
BF75D/
BF80A
IN 34.070 – 34.375 (1.3413 – 1.3533) 33.870 (1.3335)
EX 35.223 – 35.508 (1.3867 – 1.3979) 35.023 (1.3789)
BF90D/
BF100A
IN (PRI) 35.422 – 35.707 (1.3946 – 1.4058) 35.222 (1.3867)
IN (SEC) 34.710 – 34.995 (1.3665 – 1.3778) 34.510 (1.3587)
EX 35.223 – 35.508 (1.3867 – 1.3979) 35.023 (1.3789)
Camshaft oil clearance 0.045 – 0.084 (0.0018 – 0.0033) 0.100 (0.0039)
Fuel injector Resistance 9 – 11 Ω –
Oil pump Body I.D. 80.00 – 80.04 (3.150 – 3.151) –
Inner rotor-to-outer rotor clearance 0.02 – 0.16 (0.001 – 0.006) 0.20 (0.008)
Outer rotor-to-oil pump body clearance 0.10 – 0.19 (0.004 – 0.007) 0.23 (0.009)
Outer rotor height 17.98 – 18.00 (0.708 – 0.709) 17.96 (0.707)
Pump body depth 18.04 – 18.07 (0.710 – 0.711) –
Outer rotor - to-oil body side clearance 0.04 – 0.09 (0.002 – 0.004) 0.12 (0.005)
Vapor
separator
Float height 26 – 31 (1.0 – 1.2) –
Fuel pump Discharge volume (with pump operated
for 2 sec. at 12 V)
20 cm
3
(0.7 US oz, 0.7 lmp oz) or more
–
Fuel pressure 325 – 375 kPa
(3.3 – 3.8 kgf/cm
2
, 47 – 54 psi)
–
Alternator Stator resistance 0.09 – 0.14 Ω –
Starter motor Brush length 12.3 (0.48) 7.0 (0.28)
Insulator length (Micha depth) 0.40 – 0.50 (0.016 – 0.020) 0.20 (0.008)
Commutator O.D. 29.4 (1.16) 28.8 (1.13)
Commutator runout – 0.10 (0.004)
Thermostat Cylinder
head side
Begin to open 48 – 52 °C (118 °F – 126 °F) –
Full open 60 °C (140 °F) –
Valve lift more than 3.0 (0.12) –
Cylinder
block side
Begin to open 58 – 62 °C (136 °F – 144 °F) –
Full open 70 °C (158 °F) –
Valve lift more than 3.0 (0.12) –
EBT sensor/
ECT sensor
Resistance 40°C /104 °F 1.0 – 1.3 kΩ –
100°C/212 °F 0.1 – 0.2 kΩ –
IAT sensor Resistance 40°C /104 °F 1.0 – 1.3 kΩ –
VTEC solenoid
valve
Resistance 14 – 16 Ω –
IAC valve Resistance 10 – 13 Ω –
HO2S heater Resistance 11.7 – 15.6 Ω –