Perkins M85T - Fuel System

Chapter 11 TPD 1399E
Page 40
Fuel system M65 M85T
Recommended fuel specication... BS2869 Class A2 ASTM BS2869 Class A2 ASTM
D975 Number 2D D975 Number 2D
Fuel injection pump ....................... Zexel PTR, in-line pump Zexel PTR, in-line pump
Stop solenoid
• Early engines to
January 1999 .............................Energise-to-run
Later engines Energise-to-stop Energise-to-stop
Fuel lift pump ................................. FCM type XY - lever operated FCM type XY - lever operated
diaphram pump diaphram pump
Fuel feed pressure (static) ............. 42 - 70 kPa (6.1 - 10.2 Ibf/in
2
) 42 - 70 kPa (6.1 - 10.2 Ibf/in
2
)
Governor type ................................ Mechanical Mechanical
Pipe sizes
Fuel feed pipe -
outside / diameter ........... 7.9 mm (0.315 in) 7.9 mm (0.315 in)
Fuel feed pipe - bore ...... 6.53 mm (0.257 in) 6.53 mm (0.257 in)
Return fuelpipe -
outside / diameter ...........6.3 mm (0.25 in) 6.3 mm (0.25 in)
Return fuel pipe - bore ............. 4.93 mm (0.194 in) 4.93 mm (0.194 in)
Maximum lift pump lift 1.53 m (5 ft) to bottom of fuel tank 1.53 m (5 ft) to bottom of fuel
tank
....................................................... suction pipe through a pipe 3.06 m suction pipe through a pipe 3.06 m
(10 ft) in length (10 ft) in length
Maximum fuel lift pump
depression at Inlet ......................... 120 mm Hg (4.72 in Hg) 120 mm Hg (4.72 in Hg)
Fuel lift pump ow rate .................. 9.15 cc/sec at delivery pressure 9.15 cc/sec at delivery pressure
of 24 kPa (3.5 Ibf/in
2
) of 24 kPa (3.5 Ibf/in
2
)
Fuel consumption at full power ...... 13.31 litre/hr (2.9 UK gal/hr, 16.5 litre/hr (3.7 UK gal/hr,
3.52 US gal/hr) 4.5 US gal/hr)