MIL-PRF-83830C
3.15.3 Fail-safe hydraulic lift system. The truck shall be equipped with a fail-safe hydraulic
lift system which will automatically prevent load lowering and fork forward tilting in the event
of electrical, hydraulic or pneumatic failure; hydraulic or pneumatic failure includes any
component, line or hose. Check valves have been used in the past to prevent load lowering.
Pressure relief valves or regulators shall be provided in the hydraulic and pneumatic systems to
prevent overpressure. In addition, a means shall be provided to manually override the system to
allow safe and slow lowering (not more than 10 feet per minute) of loaded or unloaded forks.
3.15.4 Hydraulic schematic. The hydraulic schematic shall be provided on a durable
material and should be stored in the cab. For example: A book with hard plastic pages (tear
resistant & smear resistant).
3.16 Brakes.
3.16.1 Service brake. Full air, air-over-hydraulic, or hydraulic-over-hydraulic type, foot
controlled, service brakes shall be provided. The service brakes shall stop the truck with rated
load, within the distance specified in the Stopping Distance Method of ANSI/ITSDF B56.6, with
not more than 80 pounds of force on the brake pedal. The service brakes shall meet the Drawbar
Drag Method of ANSI/ITSDF B56.6, except a drawbar drag equal to 25 % of truck gross weight
shall be produced with not more than 80 pounds of force on the brake pedal.
3.16.2 Parking brake. The parking brake actuation shall be independent from the service
brakes. The control shall be located within reach of the seated operator and in a position to
permit easy and safe movement on and off the vehicle. Not more than 35 pounds of force shall
be required to apply the parking brake. The parking brake shall hold the truck with rated load on
a 20% grade in both the forward and reverse direction.
3.17 Electrical components and circuits. The electrical system shall consist of all electrical
components necessary for operation of the truck. The forklift shall have sufficient electrical
grounding to prevent static discharge.
3.17.1 Battery. Except when Type A Winterization (see 3.20.1) is specified (see 6.2), the
battery(s) shall be the maintenance-free type. Electrical system voltage shall be 12 volts.
3.17.2 Electrical disconnect switch. A keyless master switch, with an identification plate,
shall be installed in a convenient location to permit disconnect of the battery from all electrical
load.
3.17.3 Ignition switch. A key operated ignition switch shall be furnished. It shall have not
less than three positions; off, on and start. The ignition switch shall not activate the engine
starter while the engine is running, nor when the engine is not running and the transmission is in
any forward or reverse gear.
3.17.4 Alternator. The alternator shall have sufficient output at normal engine operating
RPM to supply full electrical operating load, including all lights, and still provide electrical
current to charge the battery.
8
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business