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Technical data – Crown Equipment Pneumatic Tire Lift Trucks MBX50 User Manual

Page 8

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TECHNICAL DATA

FUEL SYSTEM – DIESEL

• The diesel fuel tank is integral to the

truck frame.

• Easy-servicing diesel fuel system includes

clean-out access and a full-fl ow fuel fi lter
with water separator.

COOLING SYSTEM

The high-capacity aluminum radiator is de-
signed with an effi cient thermal transfer fi n
and integral oil cooler for the transmission
torque converter.

• System design allows easy access to the

reservoir for checking the coolant level.

• High-volume cooling fan uses fl exible

plastic blades and shroud for maximum air
volume and noise reduction.

ELECTRICAL SYSTEM

Standard instrument package and operator
conveniences:

• 12-volt electrical system

• 50A alternator with built-in IC regulator

• Key-lock, anti-restart ignition switch

• High-torque, low-amp starter motor with

planetary gear reduction

• Waterproof electrical connectors

• Electric fuel gauge, water temperature

gauge, LCD hour meter

• Indicator lights for Neutral/Return to

Neutral, Low Oil Pressure, Low Battery/
Alternator Output, Check Engine Warning,
Hydraulic Lock (Operator Presence), and
ECCS Status Code

• ECCS Service Support Tool connector for

rapid system diagnostics

• Sedimenter warning lamp and glow

indicator (Diesel Models Only)

HYDRAULIC SYSTEM

The Hydraulic System features a tandem
pump assembly with separate pumps for
load handling and steering. This enables
faster lifting at engine idle speed for greater
fuel economy and performance levels.

• Large hydraulic fl uid reservoir integral to

the truck frame reduces heat buildup in
the system.

• Load sensing valve in the hydraulic circuit

reduces the fl ow of oil to the power steering
system when steering wheel is idle.

• Hydraulic System is fully fi ltered and

features a powerful and effi cient direct
drive gear pump.

FRAME

An all-welded assembly with heavy-gauge
steel and integral hydraulic and fuel tanks
provide exceptional durability.

• Welded front cross-member and bolted

drive axle increase frame rigidity.

• Loads are transferred directly from the

mast to the drive axle and onto the fl oor
without being transmitted through the
frame, reducing frame stress.

• Wide, open step area, with non-slip

surface facilitates easy operator entry
and exit.

DRIVE AXLE

A heavy-duty, cast steel drive axle housing
supports the load and chassis without
placing a load on the free-fl oating axle
shafts. A fl ange is mounted to the truck
frame to improve load distribution and
reduce frame fl exing.

TRANSMISSION

Komatsu single-speed, powershift trans-
mission is specifi cally designed for industrial
applications.

• Column-mounted electrical shift lever

gives the operator easy directional
control without removing a hand from
the steering wheel.

• Optimized stall ratio for torque converter

provides high torque without sacrifi cing
travel speed.

• A modulating control valve absorbs initial

pressure spikes during initial engagement
and directional change. This improves
shifting capabilities and prolongs the life
of the entire drive train.

• Transmission oil is double-fi ltered by a 125-

micron mesh on pickup, and a 35-micron
cartridge on the return line.

• Transmission oil cooler is integral with

the radiator.

• Inching control and auxiliary brake pedal
combination allows the operator precise

truck positioning with positive control.

BRAKES

Hydraulic brakes are self-energizing and
self-adjusting.

• Brake fl uid reservoir is located under the

console cover for fast, easy inspection
and maintenance.

• Heavy-duty brake backing plate and thick

brake drum provide reliable braking action
and reduced heat.

• Mechanical parking brake has two-

stage latching mechanism for positive
engagement.

• Power assist is available on selected models.

STEER AXLE

Fully Hydrostatic Power Steering is standard.

• Independent power steering pump sepa-

rates steering function from main hydraulics
for smoother, more reliable action.

• Heavy-duty fabricated steer axle has

double-acting, double-ended power
steering cylinder and no drag links or
tie rods.

• Steering stops are machined into the

steering cylinder to reduce stress impact
on steering linkages.

• Grease fi ttings on all linkages are acces-

sible without lifting the truck.

MAST, CARRIAGE, LBR AND FORKS

High-visibility mast assembly has a 6-roller
carriage that is available in two-, three-, and
four-stage Free Lift, Free View designs.

• Sealed bearings require no maintenance.

• Angle-mounted bearings and a shaped

rail fl ange prevent excessive wear and
friction, while maintaining correct side
thrust clearance.

• ITA Class II or Class III carriages accept a

variety of fork sizes and common load-
handling attachments.

• 48-inch-high load backrest is standard

for increased load control and operator
protection.

• Single or double auxiliary hydraulic-

function internal hose routing is available.