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Volvo Penta TD520GE User Manual

Volvo Penta TD520GE
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Technical data: TD/TAD420VE, TAD620VE, TAD650VE, TAD660VE
15
Group 20
Piston rings
Compression rings
Number of rings ..................................................... 2
Piston ring clearance measured in groove, wear limit:
Upper compression ring (1) ................................. Keystone
Lower compression ring (2) ................................. 0.17 mm (0.067")
Piston ring gap measured in ring opening, wear limit:
Upper compression ring (1) ................................. 0.8 mm (0.03")
Lower compression ring (2) ................................. 2.5 mm (0.0984")
Oilscraper ring (3)
Number: ................................................................. 1
Width, including springcoil: ..................................... 3 mm (0.12")
Piston ring clearance, height: ................................. 0.1 mm (0.0039")
Piston ring gap, wear limit: ..................................... 1.15 mm (0.045”)
Pistons
Number of piston ring grooves ................................ 3
Combustion chamber:
Diameter Ø ......................................................... 61
±0.1
mm (2.402"
±0.0039
”)
Combustion chamber depth:
TD420VE/TAD420VE .......................................... 18
±0.1
mm (0.7087"
±0.0039
”)
TAD620VE, TAD650/TAD660VE ........................ 17.5
±0.1
mm (0.689"
±0.0039
”)
Gudgeon pin diameter Ø ........................................ 38
-0.006
mm (1.496"
-0.0002"
)
Piston front marking, according to picture: Flywheel symbol on the piston top faces the flywheel.
Guiding pins on the connecting rod, must face flywheel symbol on the piston.
1
2
3

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Volvo Penta TD520GE Specifications

General IconGeneral
Engine ModelTD520GE
Number of Cylinders6
Fuel SystemDirect Injection
Cooling SystemWater-cooled
AspirationTurbocharged
Engine TypeDiesel
Frequency (Hz)50 Hz
Engine Speed (RPM)1500 RPM

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