John Deere 304J Manual De Usuario

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Net engine power is with standard equipment including air 
cleaner, exhaust system, alternator, and cooling fan, at stan-
dard conditions per SAE J1349 and DIN 70 020, using No. 2-D 
fuel at 35 API gravity. No derating is required up to 5,000-ft. 
(1500 m) altitude. Gross power is without cooling fan.
Specifications and design subject to change without notice. Wherever applicable, specifications are in accordance with SAE 
standards. Except where otherwise noted, these specifications are based on a unit with all standard equipment, 405/70R20 tires, 
ROPS cab, full fuel tank, and 175-lb. (79 kg) operator.
DKA304J  Litho in U.S.A.  (09-03) 
 304J 
Engine
 
 
Certified to EPA Tier 3 emissions
 
 
Antifreeze, –34°F (–37°C)
 
 
Coolant recovery tank
 
 
Fan safety guard
 
 
Fan, suction type, hydraulically driven, proportional
   speed
 
 
Muffler, under hood with curved end exhaust stack
 
 
Environmentally friendly engine oil drain
 
 
Spin-on engine oil and fuel filter
 
 
Engine oil cooler
 
 
Quick-release fuel filter and water separator
 
 
Under-hood dual-element air cleaner with restric-
   tion indicator
 
 
Under-hood prescreened air intake with dust
   evacuator valve
 
 
Serpentine drive belt with automatic tensioner
 
 
Engine coolant heater, 1,000 watts, 110 volts
 
 
Special application: Trash screens, etc.*
     Electrical
 
 
Starter switch with electric fuel cutoff
 
 
12-volt system
 
 
Electrical load center with blade-type fuses
 
 
Standard batteries (2), 12 volt with 1,700 CCA
 
 
 
Master electrical disconnect switch
 
 
Alternator, 12 volts, 65 amps
 
 
Horn (conforms to SAE J994, J1446)
 
 
Lights (conform to SAE 99): Driving / Front work-
   
ing (2) / Turn signals / Flashers / Stop / Taillights
 
 
Pre-wired for rear worklights
 
 
Worklights, rear (2)
 
 
Reverse warning alarm (conforms to SAE J994,
   J1446)
 
 
Multifunction monitor with audible and visual
   
warnings: Low engine oil pressure / Engine
   
coolant temperature / HST transmission oil
   
temperature / Parking brake indicator / Gauges
   
and indicators: Engine coolant temperature, fuel
   
level, speedometer, clock, and hour meter
 
 
Indicator lights: Engine air filter / Fasten seat belt /
   
Parking brake actuated / Forward/reverse travel /
   
1st or 2nd speed range / Turn signal and hazard
   
lights / High-beam indicator / Battery voltage
 304J 
Electrical 
(continued)
 
 
Radio-ready cab, fused 12-volt radio electrical
   
lead and speakers, power port
 
 
By-pass starter safety cover on starter, positive
   
terminal battery cover
 
 
Pre-wired for roof beacon
 
 
Sealed external electrical connectors
     Powertrain/Brakes
 
 
Hydrostatic (HST) transmission: Electric shift
   
control / Single-lever joystick F-N-R / Hydrostatic
   
oil cooler / Inching pedal / Two speeds forward
   
and reverse / Infinitely variable speed control
 
 
Service brakes, hydraulically actuated, self-
   
adjusting internal wet-disk brake and driveline
   drum brake
 
 
Parking brake, spring applied, hydraulically
   
released, switch operated
 
 
Axles, manual locking front and conventional rear
   
differentials, heavy-duty outboard planetaries
     Hydraulic System
 
 
Hydraulic system oil cooler
 
 
Automatic bucket return-to-dig control
 
 
Boom float function
 
 
Reservoir sight gauge for hydraulic/hydrostatic oil
 
 
Fine-micron hydraulic filter, vertical mounting
 
 
Hydraulic lever lockout
 
 
Pilot-operated three-function valve with single
   
joystick lever control for boom and bucket, and
   
auxiliary lever for standard pin disconnect and
   auxiliary hydraulics
 
 
Four-function hydraulic valve with pilot joystick
   
control and pilot auxiliary lever for third function,
   
and push buttons for fourth function
 
 
Hydraulic conversion kits, four-function valve
 
 
Quick-coupler diagnostic ports: Priority pressure /
   
Hydraulic pump pressure / Control valve pressure /
   HST pressure
     Operator’s Station
 
 
Cab (conforms to SAE J1040, SAE J231, ISO3471,
   
ISO3449): ROPS/FOPS / Heater/defroster / Rubber-
   
plane isolation mounted for noise/vibration reduc-
   
tion / Intermittent front and rear windshield
 304J 
Operator’s Station 
(continued)
   
wipers and washers / Tinted safety glass / Full-
   
width adjustable sun visor / Pre-wired for radio
   
speakers / Deluxe high-back cloth seat with
   
mechanical and 2-inch (51 mm) retractable seat
   
belt / Left and right doors / One sliding window
   
in each door
 
 
AM/FM/WB radio
 
 
AM/FM/WB radio with cassette player
 
 
AM/FM/WB radio with CD player
 
 
Air conditioning (factory or dealer installed)
 
 
Storage compartment
 
 
Rubber floormat
 
 
Tilt steering column
 
 
Rearview mirrors, outside (2) and inside (1)
   
(conform to SAE J985)
 
 
Handholds and steps, ergonomically located and
   
slip resistant (conform to SAE J185)
     Loader Linkage
 
 
Z-bar loader linkage
 
 
Loader boom service locking bar (conforms to
   SAE J38)
     Buckets and Attachments
 
 
Full line of buckets with selection of bolt-on
   
cutting edges and teeth
 
 
Standard quick-coupler, less bucket
 
 
Worksite Pro
TM
 skid-steer-style coupler
 
 
Full line of construction utility forks, pallet forks,
   
extendible boom with hook, and other attachments*
     Tires
 
 
405/70R20 tires on single-piece rims
     Other
 
 
Fenders, front and rear
 
 
Articulation locking bar (conforms to SAE J276)
 
 
Vandal protection, includes lockable engine
   
enclosure and fuel fill
 
 
Counterweight, full
 
 
Rear bottom guard
 
 
Drawbar, with locking pin
 
 
Material-weighing system*
 
 
Ride control
 
 
JDLink
TM
 wireless communication system
304J LOADER
Key:   
 
Standard equipment   
 
Optional or special equipment                                                                  *See your John Deere dealer for further information.
CONTROL OWNING AND OPERATING COSTS
Customer Personal Service (CPS) is part of John Deere’s proactive, fix-before-fail strat-
egy on machine maintenance that will help control costs, increase profits, and reduce 
stress. Included in this comprehensive lineup of ongoing programs and services are:
 
Fluid analysis program – tells you what’s going on inside all of your machine’s 
major components so you’ll know if there’s a problem before you see a decline in 
performance. Fluid analysis is included in most extended coverage and preventive-
maintenance agreements.
 
Component life-cycle data – gives you vital information on the projected life 
span of components and lets you make informed decisions on machine maintenance 
by telling you approximately how many hours of use you can expect from an engine, 
transmission, or hydraulic pump. This information can be used to preempt catastrophic 
downtime by servicing major components at about 80 percent of their life cycle.
 
Preventive Maintenance (PM) agreements – give you a fixed cost for maintain-
ing a machine for a given period of time. They also help you avoid downtime by ensur-
ing that critical maintenance work gets done right and on schedule. On-site preventive
maintenance service performed where and when you need it helps protect you from
the expense of catastrophic failures and lets you avoid waste-disposal hassles.
 
Extended coverage – gives you a fixed cost for machine repairs for a given 
period of time so you can effectively manage costs. Whether you work in a severe-
service setting or just want to spread the risk of doing business, this is a great way 
to custom-fit coverage for your operation. And an extended coverage contract also 
travels well because it’s backed by John Deere and is honored by all Deere construc-
tion dealers.
 
Customer Support Advisors (CSAs) – Deere believes the CSA program lends
personal quality to Customer Personal Service (CPS). Certified CSAs have the knowl-
edge and skills for helping make important decisions on machine maintenance and
repair. Their mission is to help you implement a plan that’s right for your business 
and take the burden of machine maintenance off your shoulders.
Vertis QCA
1300 19th Street, Suite 200
East Moline, IL 61244
Cyan 
Magenta 
Yellow 
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DKA304J Page 18
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