John Deere 304J Manual De Usuario

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 

● 

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 

● 

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 

   

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

● 

▲ 

Optional or special equipment                                                                  *See your John Deere dealer for further information.

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

a 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.

Cyan 

Magenta 

Yellow 

Black 

DKA304J Page 18

Black