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Crown Equipment Corporation
New Bremen, Ohio 45869 USA
Tel 419-629-2311
Fax 419-629-3796
crown.com
Because Crown is continually improving its products,
specifications are subject to change without notice.
Crown, the Momentum symbol, Access 1 2 3
and Work Assist are trademarks of
Crown Equipment Corporation.
Copyright 2005 Crown Equipment Corporation
SF14484 6/05
Printed in U.S.A.
Access 1 2 3
Integrated Control System
(continued)
Crown’s Access 1 2 3 Diagnos-
tics is the most comprehensive
fault detection system in the
industry. A properly trained
technician can actively view
inputs and outputs during truck
operation thereby significantly
reducing search and downtime.
The information display is the
first point for troubleshooting.
All operator information such as
travel and hydraulic parameters,
truck monitors, etc. can be
obtained and adjusted via the
display. No handset or laptop
is required – all functions are
onboard and easy to use.
Performance Profiling
Three pre-set performance
profiles can be selected on the
display. The pre-set parameters
can be changed to a multitude
of other traction and hydraulic
parameters allowing adaptation
to each customer’s requirements.
Hydraulic System
Proportional control ensures all
hydraulic functions can be indi-
vidually and precisely actuated
regardless of load. Four hydraulic
functions (lift/lower, tilt, sideshift,
reach) are standard. All hydraulic
hoses are internally reeved
through the mast.
The utilization of an internal
gear pump reduces the noise
level and ensures high efficiency
in all applications. The hydraulic
oil is filtered twice. The return
and suction filters can be
exchanged without draining
the hydraulic tank.
Mast and Reach Carriage
Crown’s unique offset, wide view
mast delivers excellent visibility at
height as well as for low-level
operations. Mast cross-bracing
and overhead guard bracing
have been angled and hose and
chain rollers have been canted to
further enhance visibility. A load
backrest designed for maximum
visibility is also standard. The
standard three-stage full-free lift
mast incorporates integrated
sideshift with tilting carriage,
hence reducing head length.
Mast channels are reinforced
to minimize static and
dynamic deflection.
Spring dampers are located on
the fork carriage to reduce noise
while staging and the lifting
speed is slowed before reaching
the lift limit. Elastomer dampers
between the mast stages and
hydraulic dampening in the
free-lift cylinder reduce noise
while lowering.
The anti-friction mast rollers are
canted to reduce energy con-
sumption and ensure longer life.
The heavy-duty reach carriage
moves on four main roller
bearings. Two adjustable
backing rollers minimize
dynamic mast rocking while
four adjustable side rollers
ensure very smooth movement
and precise positioning.
Drive Unit
A highly efficient drive unit with
helical gears, integrated pinion
and vertically mounted three-
phase (AC) traction motor
provides quiet, powerful traction
performance. A large Vulkollan
drive wheel (13.50" x 5.51")
offers high load capacity, long
life and excellent travel comfort.
Steering
The electric steering system
is travel speed sensitive. It
provides fast direct response
with light effort for controlled
maneuverability. Variable steering
ratio can be programmed to suit
specific needs. A fail-safe control
circuit applies motor braking and
parking brake if a fault is detected.
Brakes
The foot pedal applies the
service brake. The brake pres-
sure is distributed to the load
wheels and the drive wheel by a
master cylinder in combination
with regenerative motor braking.
This ensures the truck brakes
smoothly and efficiently.
The parking brake is activated by
a switch in the operator compart-
ment. The spring-applied / elec-
tro-magnetically released brake
is applied on the drive wheel. The
parking brake is automatically
applied when the operator exits
the truck.
The truck can also be brought to
a stop by reversing the travel
direction using the electric
regenerative plugging function.
Furthermore, the truck is
equipped with an electric auto-
brake function, which stops the
truck as the accelerator pedal is
released (controlled coasting).
Both electric braking functions
can be set via the display.
Motors
All motors are highly efficient
three-phase (AC) which provide
high available torque and seam-
less reversal. Traction and
hydraulic motors are oversized
for superior thermal capability
and are especially suitable for
high loads and high ambient
temperature applications.
Other Options
1. Audible travel alarm
2. Flashing lights
Safety considerations and
dangers associated with
audible travel alarms and
flashing lights include:
• Multiple alarms and/or lights
can cause confusion.
• Workers ignore the alarms
and/or lights after day-in and
day-out exposure.
• Operator may transfer the
responsibility for “looking out”
to the pedestrians.
• Annoys operators and
pedestrians.
Other Options Available
Contact your local Crown dealer.
Dimensions and performance
data given may vary due to
manufacturing tolerances.
Performance is based on an
average size vehicle and is
affected by weight, condition of
truck, how it is equipped and the
conditions of the operating area.
Crown products and specifica-
tions are subject to change
without notice.
SR 5285H Series
Technical Information