John Deere 644H User Manual download pdf (Page 3)

Hydraulic System!

Steerin~ (continued)

Steering(conformstoSAEJ1511)

Type power,fullyhydraulic

Pressure 3,600psi(24850kPa)relief

Articulationangle 80-degreearc(40degreeseachdirection)

Turningradius(measuredtocenterline

ofoutsidetire) 18ft.0in.(5500mm)

644H

Tires

Choiceof TreadWidth

20.5R25,XHA1StarL2MichelinRadial 85.4in.(2170mm)

23.5-25,12PRL2* 85.4in.(2170mm)

23.5-25,20PRL3* 85.4in.(2170mm)

28L-26,14PRLS2* 89.4in.(2272mm)

23.5R25,GP-2B1StarL2Goodyear

Radial* 85.4in.(2170mm)

23.5R25,VMT1StarL3Firestone

Radial* 85.4in.(2170mm)

23.5R25,VUT1StarL2Firestone

Radial* 85.4in.(2170mm)

23.5R25,XHA1StarL3MichelinRadial* 85.4in.(2170mm)

650/65R25,XLD1StarL3Michelin

Radial* 85.4in.(2170mm)

*Requires9-degreeaxlestops.

Dimensions with Pin-on Type Bucket

A Heighttotopofcabandcanopy 11ft.2in.(3404mm)

B Heighttotopofexhaust 11ft.0in.(3353mm)

C Groundclearance 18.1in.(461mm)

D Lengthfromcenterlinetofrontaxle 63in.(1600mm)

E Wheelbase 126in.(3200mm)

F Dumpheight (seepage10)

G Heighttohingepin,fullyraised 13ft.7in.(4144mm)

H Dumpreach (seepage10)

I Maximumdiggingdepth 2.7in.(69mm)

J Overalllength (seepage10)

K Maximumrollbackatgroundlevel 40degrees

WidthOverTires

ChangeInVerticalHeight

106.2in.(2697mm)

- 2.8in.(- 71 mm)

113.1in.(2874mm)

- 1.5in.(- 37 mm)

113.4in.(2881mm)

-0.1 in.(-2mm)

117.6in.(2986mm) 0.4 in.(11mm)

113.2in.(2875mm) 0 in.(0mm)

106.3in.(2700mm) 0.1 in.(2mm)

106.4in.(2703mm)

- 0.2in.(- 4 mm)

109.1in.(2772mm)

- 1.2in.(- 30 mm)

110.0in.(2795mm)

- 3.1in.(- 79 mm)

1 2 3 4 5

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