Volvo Penta TAD721GE User Manual

1
General InformationGroup 20
Safety precautions ...............................................2
General information ............................................. 5
Repair instructions ...............................................6
Location of identification plates
TD/TAD420-620, TD/TAD520-722 .......................9
TAD650/660, TAD750/760 .................................. 10
TD420VE, TAD420VE, TAD620VE, TAD650VE,
TAD660VE
General (420/620)................................................ 11
General (650/660)................................................ 12
Engine block ....................................................... 12
Valve mechanism ............................................... 16
Crank mechanism ............................................... 19
Lubricating system .............................................. 22
Fuel system ........................................................24
Intake and exhaust system .................................32
Cooling system ................................................... 32
Tightening torque ................................................33
TD520GE, TAD520GE, TD520VE, TAD520VE,
TAD530-532GE
General ...............................................................36
Engine block ....................................................... 37
TD420VE, TAD420VE, TAD620VE, TAD650VE, TAD660VE,
TD520GE, TAD520GE, TD520VE, TAD520VE,
TAD530/531/532GE, TD720GE, TAD720GE, TD720VE,
TAD720VE, TAD721GE, TAD721VE, TAD722GE, TAD722VE,
TAD730/731/732/733GE, TAD750VE, TAD760VE
Valve mechanism ............................................... 40
Crank mechanism ............................................... 43
Lubricating system .............................................. 46
Fuel system ........................................................48
Intake and exhaust system .................................55
Cooling system ................................................... 56
Tightening torque ................................................57
TD720GE, TAD720GE, TD720VE, TAD720VE,
TAD721GE, TAD721VE, TAD722GE, TAD722VE,
TAD730-733GE, TAD750VE, TAD760VE
General (720-722GE ) .........................................59
General (720-722VE) ........................................... 60
General (750/760)................................................ 60
Engine block ....................................................... 61
Valve mechanism ............................................... 64
Crank mechanism ............................................... 67
Lubricating system .............................................. 70
Fuel system ........................................................72
Intake and exhaust system .................................80
Cooling system ................................................... 81
Tightening torque ................................................82
Tightening diagram ............................................. 85
Contents
Technical Data
Industrial Engines
© 2007 AB VOLVO PENTA
All rights to changes or modifications reserved.
Printed on environmentally-friendly paper

Volvo Penta TAD721GE Specifications

General

Engine Model	TAD721GE
Number of Cylinders	6
Displacement	7.2 L
Torque	1050 Nm
Fuel System	Common Rail
Aspiration	Turbocharged
Rated Speed (rpm)	2200 rpm
Cooling System	Liquid-cooled
Bore (mm)	108 mm
Emission Level	EU Stage II
Engine Type	In-line 6-cylinder diesel engine
Stroke (mm)	130 mm (5.12 in.)