John Deere 495D - Manual

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495D EXCAVATOR

26,184 lb (11 877 kg)

Transport Height .......................................................7 ft 5 in. (2.25 m)
Transport Length ......................................................23 ft 3 in. (7.08 m)
Machine Width ..........................................................9 ft 6 in. (2.89 m)

ENGINE ......................................................................John Deere 300 Series

Number of Cylinders and Displacement .............................. 4 cylinders, 276 cu in. (4.5 L)
Air Intake System................................................................. Turbocharged
Bore and Stroke ................................................................... 4.19 x 5.00 in. (106.4 x 127 mm)
Compression Ratio .............................................................. 17.2 to 1
Net hp:

At 2100 rpm (Dig Mode) ............................................... 95 SAE hp (71 kW)
At 2300 rpm (Travel Mode)........................................... 100 SAE hp (75 kW)

Maximum Torque at 1300 rpm ............................................. 284 lb-ft (385 N•m)
Nozzle Opening Pressure:

New .............................................................................. 3820 ± 40 psi (26 340 ± 275 kPa)
Used ............................................................................. 3620 ± 40 psi (25 000 ± 275 kPa)

Valve Clearance (Cold):

Intake ............................................................................ 0.014 in. (0.36 mm)
Exhaust ........................................................................ 0.018 in. (0.46 mm)

Oil Pressure at Fast Idle ...................................................... 50 ± 15 psi (345 ± 100 kPa)
Static Injection Pump Static Timing...................................... Line on governor weight retainer aligned with line on cam

ring with No. 1 piston at TDC

Dynamic Injection Pump Timing at

Rated Load rpm*:

4276D:

Dig Mode ......................................... NA
Travel Mode ..................................... 16 + 0 - 1° BTDC

4045D:

Dig Mode ......................................... NA
Travel Mode ..................................... 16 + 0 - 1° BTDC

Speeds:

Slow Idle ....................................................................... 1000 ± 25 rpm
Fast Idle (Propel Mode) ................................................ 2475—2500 rpm
Rated Full Load (Dig Mode) ......................................... 2300 + 25 - 50 rpm
Rated Full Load (Travel Mode) ..................................... 2300 rpm

Turbocharged Boost Pressure

at Rated Full Load
(Minimum w/4045T Metric Engine).................................. 9 psi (62 kPa)

Cylinder Pressure (Compression Min) ................................. 350 psi (2415 kPa)
Number of Flywheel Teeth ................................................... 129
Electrical System ................................................................. 24 volt
Alternator ............................................................................. 42 amp
Cooling System Pressure .................................................... 10 psi (69 kPa)

Note: *For latest information, see Dealer Technical Assistance Center (DTAC) Solution K000413.

POWER TRAIN

Transmission ....................................................................... Constant mesh with high and low speed ranges.

Pressurized lubrication system.

Travel Motor......................................................................... A bent axis, axial piston variable displacement motor.
Travel Brake ........................................................................ Air over hydraulic shoe type brakes in each wheel.
Park Brake ........................................................................... Air actuated drum type on transmission output shaft.