MacDon 9250, Operator'S Manual

Page: 15 / 160

Form # 46584 Issue 11/06 Web Rev_01
13
SPECIFICATIONS
DIESEL ENGINES:
Type ...................................................................................................... Cummins B 4.5NA, 4 Cylinder, 4-stroke cycle - Turbocharged
Displacement ..............................................................................................................................................................275 cu. in. (4.5 L)
Power: ........................................................................................................................................................ 110 hp (82kW) @ 2500 rpm
Bore ........................................................................................................................................................................... 4.02 in. (102 mm)
Stroke......................................................................................................................................................................... 5.42 in. (138 mm)
Compression Ratio ...................................................................................................................................................................18.0 to 1
Oil Type.........................................................................................See "Fuels, Fluids and Lubricants" in Maintenance/Service section
Oil Pressure: @ 2300 rpm ....................................................................................................................... 30 to 60 psi (210 to 415 kPa)
@ minimum (idle rpm) ........................................................................................................................... 13 psi (90 kPa)
Firing Order (No.1 cylinder at fan end).................................................................................................................................. 1 - 3 - 4 - 2
Engine Speed: Turbocharged version ......................................................................................................................... 2395 - 2495 rpm
Engine Idle Speed................................................................................................................................................................... 1100 rpm
Rocker Arm-to-Valve Clearance: Exhaust ............................................................................................................0.020 inch (0.50 mm)
Intake................................................................................................................0.010
inch (0.25 mm)
IMPORTANT: Rocker arm-to-valve clearance adjustments must be made with the engine not running.
Thermostat ......................................................................................................................................................................... 180˚F (82˚C)
Fuel ...............................................................................................See "Fuels, Fluids and Lubricants" in Maintenance/Service section
Engine Coolant .............................................................................See "Fuels, Fluids and Lubricants" in Maintenance/Service section
NOTE: Specifications and design are subject to change without notice or obligation to revise units previously sold.
TORQUE SPECIFICATIONS
CHECKING BOLT TORQUE
The tables shown below give correct torque values for various bolts and capscrews. Tighten all bolts to the torques
specified in chart unless otherwise noted throughout this manual. Check tightness of bolts periodically, using bolt torque
chart as a guide. Replace hardware with the same strength bolt.
ENGLISH TORQUE SPECIFICATION
NC Bolt Torque*
SAE 5 SAE 8
Bolt
Dia.
"A"
N·m [lb-ft] N·m [lb-ft]
1/4" 12 [9] 15 [11]
5/16" 24 [18] 34 [25]
3/8" 43 [32] 56 [41]
7/16" 68 [50] 95 [70]
1/2" 102 [75] 142 [105]
9/16" 149 [110] 202 [149]
5/8" 203 [150] 271 [200]
3/4"
359 [265] 495 [365]
7/8" 569 [420] 813 [600]
1" 867 [640] 1205 [890]
Torque figures indicated above are valid for non-greased or
non-oiled threads and heads unless otherwise specified. Do
not grease or oil bolts or capscrews unless specified in this
manual. When using locking elements, increase torque
values by 5%.
* Torque value for bolts and capscrews are identified by
their head markings.
METRIC TORQUE SPECIFICATIONS
Bolt Torque*
8.8 10.9
Bolt
Dia.
"A"
N·m [lb-ft] N·m [lb-ft]
M3 0.5 [.4] 1.8 [1.3]
M4 3 [2.2] 4.5 [3.3]
M5 6 [4] 9 [7]
M6 10 [7] 15 [11]
M8 25 [18] 35 [26]
M10 50 [37] 70 [52]
M12 90 [66] 125 [92]
M14 140 [103] 200 [148]
M16 225 [166] 310 [229]
M20 435 [321] 610 [450]
M24 750 [553] 1050 [774]
M30 1495 [1103] 2100 [1550]
M36 2600 [1917] 3675 [2710]