Engine - Engine and crankcase
Engine - General specification
General specifications (For 770 EX/EX Magnum)
General specifications
770 EX
770 EX Magnum
Make
IVECO
Type
4 stroke, diesel, turbocharged aftercooler, direct injection, water cooled
Power
76 Hp
86 Hp
No of cylinders
4
Bore
104 mm
(
4 in
)
Stroke
115 mm
(
5 in
)
Cubic capacity
3908 cm³
(
238 in³
)
Compression ratio
18:01
Firing order
1-3-4-2
Idle speed
1000 RPM
Maximum no load speed
2450 RPM
Rated speed
2200 RPM
Engine block (For 770 EX/EX Magnum)
Engine block
Dry type pre fitted liner with collar
Cylinder liner seat diameter in engine
block
106.850 – 106.900 mm
(
4.207 – 4.209 in
)
Cylinder sleeve O-D
107.020 – 107.050 mm
(
4.213 – 4.215 in
)
Interference between liners and seats
in block
0.12 – 0.20 mm
(
0.005 – 0.008 in
)
Liner O-D oversize
0.200 mm
(
0.008 in
)
Cylinder liner inner diameter
104.00 – 104.024 mm
(
4.09 – 4.095 in
)
Maximum ovality and taper due to
wear
0.120 mm
(
0.005 in
)
Liner inner diameter oversize
0.400 – 0.800 mm
(
0.016 – 0.031 in
)
Camshaft bush seat diameters (For 770 EX/EX Magnum)
• Front
54.780 – 54.805 mm
(
2.157 – 2.158 in
)
• Intermediate C33
54.280 – 54.305 mm
(
2.137 – 2.138 in
)
• Rear
53.780 – 53.805 mm
(
2.117 – 2.118 in
)
Tappet seat bore diameter
15.000 – 15.018 mm
(
0.591 – 0.591 in
)
Tappet oversize
0.100 mm
(
0.004 in
)
0.200 mm
(
0.008 in
)
0.300 mm
(
0.012 in
)
Main bearing seat bore diameter
84.200 – 84.230 mm
(
3.315 – 3.316 in
)
Cylinder head (For 770 EX/EX Magnum)
Valve guide seat bore diameter in head
13.950 – 13.983 mm
(
0.549 –
0.551 in
)
Valve guide oversize
0.200 mm
(
0.008 in
)
Valve stand-in
0.700 – 1.000 mm
(
0.028 –
0.039 in
)
• Maximum stand-in permitted
1.300 mm
(
0.051 in
)
Injector standout
0.050 – 0.700 mm
(
0.002 –
0.028 in
)
• Max stand-out permitted
1.000 mm
(
0.039 in
)
Original cylinder head height
92 mm
(
4 in
)
Maximum head dressing allowed
0.500 mm
(
0.020 in
)
48190544 26/09/2017
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Summary of Contents for 770 EX
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Page 31: ...SERVICE MANUAL Engine 770EX Magnum 770EX 48190544 26 09 2017 10 ...
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