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G970 G976 G990
Tandems
Depth in (mm) 8.9 (226,5) 8.9 (226,5) 8.9 (226,5)
Height in (mm) 24.25 (616) 24.25 (616) 24.25 (616)
Thickness
inner wall in (mm) 1 (25) 1 (25) 1 (25)
outer wall in (mm) .78 (20) .78 (20) .78 (20)
Center distance in (mm)
61 (1 550) 61 (1 550) 66 (1 675)
Drive chain pitch in (mm)
2 (51) 2 (51) 2 (51)
Oscillation degrees ± 15º 15º 15º
Differential / Final drive
Model
Volvo APR90 Volvo APR90 Volvo APR90
Planetary fi nal reduction with an operator controlled wet multiple disc lock/unlock differential.
Wheels & tires (Standard equipment)
Tire size 14:00 x 24, G-2 14:00 x 24, G-2 16:00 x 24, G-2
Ply rating (PR) 12 12 12
Rim size in (mm) 10 (254)
One piece rim
10 (254)
Three piece rim
10 (254)
One piece rim
Bolt-on rims interchangeable between front and rear Yes No Yes
Front axle and articulation
Wheel lean degrees R & L
18º 18º 18º
Oscillation degrees up & down
16º 16º 16º
Ground clearance in (mm)
23.2 (590) 23.2 (590) 24.2 (615)
Minimum turning radius using front axle steering,
articulation, wheel lean and unlocked differential
ft (mm)
25'3" (7 700) 25'1" (7 640) 26'9" (8 150)
Steering arc degrees 50º 50º 50º
Frame articulation angle degrees 21º 21º 21º
Anti-drift lock valve ensures stable operation. Articulation lock standard.
Hydrostatic power steering of front wheels incorporating two steering cylinders. Meets SAE J1511 FEB. 94, ISO 5010:1992 with optional secondary steering.
Brakes
Service Brakes: Foot operated
Fade resistant, hydraulically actuated, wet multiple disc service brakes located at the 4 tandem drive wheels are fully sealed and maintenance free.
System features crossover dual braking circuits for uniform braking on both sides of the grader. Includes reserve power assist and operator warning system
(visual and audible).
Parking Brake
Spring applied hydraulically released enclosed wet multiple disc type parking brake in fi nal drive. Effective on all 4 tandem drive wheels.
Transmission cannot be engaged with park brake on.
Braking systems comply to SAE J/EN ISO 3450:1996.
Volvo uses asbestos free brake components.
036-447 D9 Brochure Q4.indd 19036-447 D9 Brochure Q4.indd 19 3/7/07 1:57:24 PM3/7/07 1:57:24 PM