Service manual

SERVICE DATA I TOLERANCES AND LIMITS
VALVE TIMING
Intake Valve Opens BTDC
ClosesABDC
Exhaust Valve Opens BBDC
ClosesATDC
Compression Pressure Standard
Limit
Limit Differences Between Cylinders
Valve Clearance (cold)
Intake
Exhaust
CYUNDER HW and VALVE SEAT
Distortion Limit
Dimension L (Intake)
Standard
Limit
(Exhaust) Standard
Limit
Seat Angle (Intake)
(Exhaust)
Contact Seat Width ( Intake)
(Exhaust)
Valve Margin Limit
VALVE GUIDE, VALVE AND VALVE SPRINGS
Valve Stem to Guide Clearance (Intake) Standard
Limit
(Exhaust) Standard
Limit
Guide Inner Spring Diameter
Main Journal Diameter Standard
Wear Limit
Grinding Limit
Main Journal Bearing Clearance Standard
Wear Limit
Protrusion from Cylinder Head
Valve Stem Diameter (Intake) Standard
Limit
(Exhaust) Standard
Limit
Valve Head Thickness (Intake) Standard
Limit
(Exhaust) Standard
Limit
Valve Head Diameter (Intake)
(Exhaust)
Valve Seat Width (Intake)
(Exhaust)
20 KW 60Hz Generator/16KW 50 Hz Generator
71 I-FOUR 71 C-FOUR
17"
47"
51
0
13
0
30.0 kglcm
2
(4271b/in
2
)
200 rpm
27.0 kglcm2 (3841b/in
2
)
200 rpm
3.0 kglcm2 (431b/in
2
)
0.3 (0.012)
0.3 (0.012)
mm(in)
0.10 (0.004) Positions 1 + 2
0.25 (0.010) Positions 3 + 6
48.0 (1.89)
49.55 (1.95)
48.05 (1.89)
49.55 (1.95)
45°
300
2.0 (0.079)
2.0 (0.079)
1.35 (0.053)
mm(in)
0.038 - 0.085 (0.001 - 0.003)
0.127 (0.005)
0.058
- 0.105 (0.002 - 0.004)
0.127 (0.005)
9.018
- 9.040 (0.355 - 0.356
69.812 - 69.825 (2.748 - 2.749)
0.05 (0.002)
69.05
(2.718)
0.059 - 0.090 (0.002 - 0.004)
0.12 (0.005)
16.5 (0.650)
8.955 - 8.980 (0.353 - 0.354)
8.884 (0.350)
8.935 - 8.960 (0.352 - 0.353)
8.864 - (0.349)
1.7 (0.067)
1.0 (0.039)
1.5 (0.059)
1.0 (0.039)
40.4
- 40.6 (1.59 - 1.60)
35.87 - 36.13 (1.41 - 1.42)
36.8 (1.45)
31.7 (1.25)
17"
47"
51
0
13
0
30.0 kglcm
2
(427 Ib/in
2
)
200 rpm
27.0 kglcm
2
(3841b/in
2
)
200 rpm
3.0 kglcm
2
(431blin
2
)
0.3 (0.012)
0.3 (0.012)
mm(in)
0.10 (0.004) Positions 1 + 2
0.25 (0.010) Positions 3 + 6
48.0 (1.89)
49.55 (1.95)
48.05 (1.89)
49.55 (1.95)
45°
300
2.0 (0.079)
2.0 (0.079)
1.35 (0.053)
mm(in)
0.038 - 0.085 (0.001 - 0.003)
0.127 (0.005)
0.058
- 0.105 (0.002 - 0.004)
0.127 (0.005)
9.018
- 9.040 (0.355 - 0.356
65.0
- 65.013 (2.5591 - 2.5596)
0.05 (0.002)
69.05
(2.718)
0.040 - 0.091 (0.0016 - 0.0036)
0.12 (0.005)
48.0 (1.890)
8.955 - 8.980 (0.353 - 0.354)
7.880 (0.3102)
8.955 - 8.980 (0.353 - 0.354)
7.867 (0.3097)
1.7 (0.067)
1.0 (0.039)
1.5 (0.059)
1.0 (0.039)
40.4 - 40.6 (1.59 - 1.60)
35.87 - 36.13 (1.41 - 1.42)
36.8 (1.45)
31.7 (1.25)
'-..'WESJERBEICE
I Engines & Generators
64