Terex TA30 Maintenance Manual page 10

General Information - Technical Data
Section 000-0000
AXLES
Three axles in permanent all-wheel drive with differential
coupling between each axle to prevent driveline wind-up.
Heavy duty axles with fully-floating axle shafts and outboard
planetary reduction gearing.
Automatic limited slip differentials in each axle. Centre axle
incorporates a through-drive differential to transmit drive to
the rear axle. Locking of this differential is actuated
simultaneously with the transmission output differential lock.
Ratios:
Differential ............................................................... 3.44:1
Planetary ................................................................. 6.35:1
Total Reduction ..................................................... 21.85:1
SUSPENSION
Front: Axle is carried on the leading arms of a sub-frame
pivoting on the main frame. Suspension is by flexible air
bellows with four heavy duty hydraulic dampers.
Axle Vertical Travel ..................................... 127 mm (5 in)
Rear: Each axle is coupled to the frame by three rubber-
bushed links with lateral restraint by transverse link.
Pivoting inter-axle balance beams equalise load on each
axle. Suspension movement is cushioned by rubber/metal
laminated compression units between each axle and
underside of balance beam ends.
Axle Vertical Travel ............................. ± 130 mm (5.12 in)
Axle Oscillation .......................................................... ± 12°
BRAKES
Air assisted hydraulic dry disc on each wheel with two
heavy-duty callipers per disc at the front and a single
heavy-duty calliper per disc at the rear. Independent circuits
for front and rear brake systems. Overstroke actuates
warning light. Brake system meets ISO 3450, SAE J1473.
Air System Pressure ............................... 7.6 bar (110 lbf/in²)
Total Air Reservoir Capacity ................... 55 litres (3 356 in³)
Hydraulic Brake Fluid Capacity ...... 2.64 litres (0.68 US gal)
Parking: Spring-applied, air-released disc on rear
driveline.
Emergency: Emergency brake control actuates the
service brakes. Automatic application of
service brakes should pressure fall in the
brake air system.
Retardation: Hydraulic retarder integral with transmission.
2
WHEELS AND TYRES
Wheels: ............ 5-piece earthmover rims with 12 stud fixing
Size:
Standard ....................... 25 x 19.50 in for 23.5 R25** tyres
Optional ...................... 25 x 22.00 in for 30/65 R25** tyres
Tyres:
Standard ........................................................... 23.5 R25**
Optional .......................................................... 30/65 R25**
Inflation Pressures (Bridgestone):
Front
23.5 R25** 4.0 bar (58 lbf/in²)
30/65 R25** 4.3 bar (62 lbf/in²)
Note: Tyre pressures should be regarded as nominal only.
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.
HYDRAULIC SYSTEM
Steering and Body Hoist
The steering and body hoist systems are supplied with oil
from a common tank by the main hydraulic pump. Gear
pump driven from power takeoff on transmission. System
components are protected by full flow filtration on the return
line.
Pump:
Type .............................................................................. Gear
Capacity at 2 300 rev/min ........... 4.49 litre/s (71 US gal/min)
Steering System
Hydrostatic power steering by two single-stage, double-
acting, cushioned steering cylinders. Emergency steering
pressure is provided by a ground driven pump mounted on
the rear of the transmission. An audible alarm and warning
light indicates should the emergency system activate.
Conforms to ISO 5010, SAE J53.
System Pressure ................................. 241 bar (3 500 lbf/in²)
Steering Angle to either side ............................................ 45°
Lock to Lock Turns, steering wheel .................................... 4
Vehicle Clearance Circle (SAE) ....................... 17.6 m (58 ft)
Body Hoist System
Two single-stage, double-acting hoist rams, cushioned at
both ends of stroke. Electro servo assisted hoist control.
System Pressure ................................. 221 bar (3 200 lbf/in²)
Control Valve ........................... Pilot Operated, Open Centre
Body Raise Time (loaded) .......................................... 12 sec
Body Lower Time (power down) ................................ 7.5 sec
Rear
4.8 bar (69 lbf/in²)
4.3 bar (62 lbf/in²)
SM 1937 Rev 1 11-00
Courtesy of Machine.Market