9-4
Technical Data
TRANSMISSION
Make/Model ..............................................................Allison H 8610 AR CEC 2
Automatic electronic control with soft shift feature. Remote mounted in the frame
with integral TC 890 torque converter and planetary gearing. Six speeds forward,
one reverse. Automatic converter lockup action in all speed ranges. Downshift inhibitor.
Intregal hydraulic retarder.
DRIVE AXLE
Heavy duty axle with full floating axle shafts, single reduction spiral bevel gear
differential and planetary reduction at each wheel.
Ratios: Standard Optional
Differential...................... 2.16:1 2.16:1
Planetary........................ 13.75:1 10.50:1
Total Reduction.............. 29.70:1 22.68:1
SUSPENSION
Front: King pin strut type independent front wheel suspension with self-contained,
variable rate, nitrogen/oil cylinders.
Rear: Variable rate nitrogen/oil cylinders with A-frame linkage and lateral stabilizer
bar.
Maximum Strut Stroke
Front ..................................................................................... 229 mm (9.0 in)
Rear ........................................................................................ 175 mm (6.9 in)
Maximum Rear Axle Oscillation .................................................... ± 7.0 Degrees
WHEELS AND TYRES
Wheel Rim Width ................................................................................. 19.5 in
Standard Tyres (Front & Rear) ................................................. 27.00 R 49 Radial
Optional Tyres (Front & Rear) ............................................ 27.00-49 (48 PR) E-4
Note: It is recommended that for tyres both listed and unlisted, the user should
consult the tyre manufacturer and evaluate all job conditions in order to make the
proper selection.
Speeds with Standard Planetary
Forward
Gear 1 2 3 4 5 6
Ratio 4.24 2.32 1.69 1.31 1.00 0.73
km/h 8.2 15.0 20.6 26.5 34.8 47.6
mile/h 5.1 9.3 12.8 16.5 21.6 29.6
Reverse
Ratio 5.75
km/h 6.0
mile/h 3.8
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