Gradall 534B (9103-1390) Service Manual - Manual (Page 47)

MAIN FRAME
The 534B has an all welded main frame with 1800
pounds of counter weight on the rear for stability. The
front of the frame has a plate which is used to bolt on
the front outrigger assembly.
FRONT DRIVE AXLE
The front axle is bolted to the axle cradle which
pivote on the front of the main frame. The angle of the
axle (left or right) to the frame is controlled by a sway
cylinder. Both axle hubs contain wet disc type brakes.
DRIVE SHAFT
An automotive type drive shaft is used to transmit
the rotary motion from the transmission to the front
axle.
REAR DRIVE AND STEERING AXLE
The rear axle assembly pivote up and down on the
main frame. Each wheel is powered by a hydraulic
motor, driving through a planetary hub. Two
steering cylinders are used to turn the wheels. At
maximum turn radius, the outside wheel tures
about 70° to pivoting axle. The inside wheel turns
about 85°. When in 3rd gear, the hydraulic motors
are not powered.
HYDRAULIC MOTORS
Each drive is powered by a gear type hydraulic
motor. The motors drive the planetary hubs.
TIRES
Standard 13:00 x 24-12 ply rating
front 65 psi, rear 55 psi.
Tires filled with CaC1 mix, front
500 lbs., reat 420 Ibs.
Options
17:50 x 25- 12 ply (flotation front only)
NOTE: Tires must be properly filled on all 534B-8
models to handle rated loads. When filling keep
valve stem at top. The fluid should be at a levelel
covering the valve stem. This protects the wheel
from corrosion and rusting.
6
HYDRAULIC MOTORS