MAINTENANCE OF FORKLIFTS - OD1660 - LESSON 1/TASK 2
secure the front chassis to the rear chassis and allow the front
chassis to pivot and steer the vehicle.
(b) Steering Cylinders.
There are two hydraulic steering
cylinders, one mounted on each side of the vehicle.
housings are attached to the front chassis while the cylinder rods
are attached to the rear chassis.
The cylinder rods extend or
retract as the steering wheel is turned, thus forcing the front
chassis to pivot about the pivot pins, and turn the vehicle.
(c) Steering Wheel.
The steering wheel is connected to the
steering gear, which controls the flow of hydraulic oil to and from
the steering cylinders.
The power assist is provided by the
hydraulic pump for reduced steering wheel turning effort when the
engine is running.
(d) Shipping Lock Pins.
These are heavy-duty steel pins,
normally stored under the operator's seat.
They are installed in
mating holes in the front and rear chassis to prevent articulation
when shipping or jacking the vehicle. The shipping lock pin must be
removed to allow for normal steering.
(10) Back-up Alarm. This is an electrically operated alarm module
located at the rear of the vehicle behind the radiator grille (figure
17 on the following page). It sounds a distinctive warning whenever
the transmission direction selector lever is placed in the reverse
(R) position. The ignition switch must be turned to the ON position
before the back-up alarm will sound or operate.
(11) Body, Towing Attachments, and Towing Controls (figure 18 on
the following page).
(a) Roll Over Protective Structure.
This structure is
constructed of heavy-duty steel and is bolted to the front chassis.
It protects the operator from injury due to falling material and the
truck rolling over.
(b) Side Panels.
These panels are constructed of sheet metal
which is secured to the rear chassis with latches.