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Gradall G3W Operator's Manual

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OPERATOR'S MANUAL
G3W
7700-4003
J u l y 2 0 0 2
S t a r t i n g L o t 1
Original Issue 1/84
Form #8019
GRADALL
406 Mill Avenue S.W.
New Philadelphia, OH, 44663, USA
Telephone: (330) 339-2211
Fax: (330) 339-3579

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Summary of Contents for Gradall G3W

  • Page 1 J u l y 2 0 0 2 S t a r t i n g L o t 1 Original Issue 1/84 Form #8019 GRADALL 406 Mill Avenue S.W. New Philadelphia, OH, 44663, USA Telephone: (330) 339-2211 Fax: (330) 339-3579...
  • Page 4 Any procedure not specifically recommended by The Gradall Company must be thoroughly evaluated from the standpoint of safety before it is placed in practice. If you aren’t sure, contact your Gradall Distributor before operating. Do not modify this machine without written permission from the Gradall Company.
  • Page 6 A kit the operator’s seat. containing all decals for the G3W is available from your Gradall Distributor. He can also furnish In relation to the carrier front, rear, right and left additional manuals for your machine.
  • Page 7 SAFETY HIGHLIGHTS Read and understand this manual, G3W Carrier Operator’s Manual, CIMA Excavator User’s Safety Manual, CIMA Off-Highway Truck Safety Manual and all instructional decals and plates before starting, operating or performing maintenance procedures on this equipment. Keep this manual in cab.
  • Page 8 SAFETY HIGHLIGHTS Learn to recognize ‘PINCH POINTS’ Counterweight & Another Object Boom Cradle Boom Holes Boom Bucket & Linkage Upperstructure & Carrier and stay clear of them. Getting caught Learn to recognize “PINCH POINTS” in a pinch point can cause serious injury or death.
  • Page 9 Some owners alter their machines. sure your machine fits the pictures and description in this manual. If it differs, or if you aren’t sure, contact your Gradall distributor before you run Never carry a water can, equipment, or other your unit.
  • Page 10 SAFETY HIGHLIGHTS Be particularly careful if this is not the machine Learn and follow your employer’s safety rules. you usually operate. listed on Read the manuals page 2 and then operate the unit a safe, open area to become familiar with the controls. REPOSITION UNIT FOR EXCAVATOR OPERATION ONLY UNDER FOLLOWING CONDITIONS: Signal persons positioned to observe and Transmission in proper range...
  • Page 11 Apply digging brake (refer to carrier oper- brake failure on that wheel. ator’s manual). If one or more wheels indicate brake failure Center boom over rear of chassis and rest boom DO NOT DRIVE THE GRADALL HYDRAULIC or bucket on the ground. EXCAVATOR. Investigate correct.
  • Page 12 SAFETY HIGHLIGHTS G3W CRADALL LIFTING CAPACITIES RATED LIFT CAPACITY Always check Lift Capacity Chart to be sure planned lift can be performed safely. Remain seated while operating upperstructure. A joystick switch is located in the operator ’s seat to de-energize joysticks when operator rises from seat.
  • Page 13 SAFETY HIGHLIGHTS Pressure can be maintained in hydraulic circuits long after the engine has been shut down. This pressure can cause oil (or items such as pipe plugs) operate with bystanders other at high speed workers near machine. “shoot out” if pressure is not correctly.

  • Page 14: Operator's Cab

    OPERATOR’S CAB Ventilation Seat Adjustment Varying degrees of cab ventilation can be attained by opening the door, the rear window, the upper front The operator’s seat and pedestal combination window and by removing the lower front window. include adjustments for height, seat angle and fore and aft positioning.
  • Page 15 Lower Front Window Windshield Wiper & Washer Lots 1-13 (Option Lot 14) NOTE: Upper front window must be open to The windshield wiper and washer are controlled by remove lower front window. switches located on the overhead instrument/con- trol panel. The wiper and washer are mounted on To remove lower front window, unlock toggle the upper front window and are stored with the latches and lift window from frame.
  • Page 16 INSTRUMENT AND INDICATOR IDENTIFICATION Low Air Indicator (glows and buzzes to indicate Fuel Gage (Option Lot 14) low brake system air pressure) Air Pressure Gage Engine Alert Indicator (glows and buzzes to indicate high engine coolant temperature or low Voltmeter engine oil pressure) (Option Lot I4) Engine Hourmeter Key On Indicator...

  • Page 17: Control Identification

    CONTROL IDENTIFICATION 10. Lighter (Lots 1-13 only) 1. Windshield Wiper Switch 11. Steering Lever 2. Joystick Switch 12. Boom Hoist & Bucket Joystick 3. Defroster Fan Switch 13. Horn Switch 4. Ignition/Start Switch 14. Emergency Brake Knob 5. Heater Fan Switch 15.
  • Page 18 CHECKS AND SERVICES BEFORE STARTING ENGINE (To be performed at beginning of each work shift) Complete all required maintenance before operating unit. enter these ports, it can shorten the life o-rings, seals, packings and bearings. Use extreme caution when checking items When adding fluids or changing filter elements, beyond your...
  • Page 19 and replenish as necessary. It is Check fuel level and replenish as Check engine coolant level recommended that the unit be refueled at the end of necessary Be sure anti-freeze solution is adequate the work shift to minimize condensation. for expected temperatures. Be sure radiator fins are clean.

  • Page 20: Starting The Engine

    ENGINE OPERATION NOTE: If engine is being started at beginning of work shift be sure to perform all “CHECKS AND SERVICES BEFORE STARTING ENGINE” (pages 14 and 15). Starting the Engine Turn ignition switch key clockwise to START Be sure engine stop handle is pushed fully to rear. position to engage starter motor.

  • Page 21: Stopping The Engine

    Cold Weather Starting Aids specific instructions for their use in this manual. Diesel engine ignition is accomplished by heat Carefully follow instructions furnished with your generated when fuel/air mixture is compressed starting aid. within the cylinders. Because this heat may be insufficient to start a cold engine in cold weather, the use of starting aids has become common practice.
  • Page 22 WARM UP & OPERATIONAL CHECKS (To be performed at beginning of each work shift) Complete all required maintenance before operating unit. The safety, efficiency and service life of your Remote control travel, steering and braking. excavator will be increased by performing the operational checks indicated.

  • Page 23: Remote Control

    REMOTE CONTROL NOTE: Remote control is to be used for positioning unit at job site, not for over-the-road travel. Preparing Carrier for Remote Control Operation Apply parking brake. Start carrier engine and develop full brake Be sure to keep feet clear of clutch pedal system pressure in front and rear portions of when moving DIGGING BRAKE toggle to system (125 psi/862 kPa.).
  • Page 24 Precautions for Remote Control Operation Be sure of clear visibility in direction of travel; Never tow load using remote control drive. use a signalman to compensate for blind spots. Always give audible signal before moving unit. Be sure upperstructure swing brake functions properly before moving carrier in remote Never permit bucket to drag while moving unit.

  • Page 25: Attachment Installation

    ATTACHMENT INSTALLATION Keep boom In fully extended position Digging with a loose or an improperly while Installing bucket. Stay clear until fitted bucket can shear adapter bolts and bucket adapter has been fitted to bucket as cause excessive wear. shown in step 2. Move adapter toward “Bucket Close”...
  • Page 26 A TYPICAL GRADALL DIGGING CYCLE Position unit for efficient digging cycle and apply Warm up engine and hydraulic oil and then move digging brake. throttle lever to full throttle position. Always operate with engine at full throttle Avoid accidental acuation of the controls.
  • Page 27 A TYPICAL GRADALL DIGGING CYCLE Move right joystick to left (G) to swing left or to Pull back on left joystick (A) to raise boom from right (H) to swing right to digging site. boom rest. Be sure to raise boom far enough to clear all obstructions.
  • Page 28 A TYPICAL GRADALL DIGGING CYCLE NOTE: Depth of cut depends on hardness of material. If bucket angle is too great or cut is too deep, hose relief valves will allow bucket to open to protect circuit. If required, press left side of tilt switch (I) to tilt...
  • Page 29 A TYPICAL GRADALL DIGGING CYCLE Move right joystick to right (H) to swing right Move left joystick to left (C) to empty the or to left (G) to swing left to dump site. If bucket. necessary, extend boom by pushing right joystick forward (F).
  • Page 30 LIFTING AND POSITIONING A LOAD Precautions Do not travel with a suspended load. Excavators are Do not depend on machine tipping as a warning of not designed for pick and carry lifts. overload. Some load ratings are based on hydraulic life capacity, not stability.
  • Page 31 Perform an unloaded trial run of the lift to Refer to lift capacity chart column for the determine maximum load radius required and required load radius. If the required radius falls maximum boom height and depth required to between columns, use the column for the next complete the lift.
  • Page 32 LUBRICATION & MAINTENANCE DIAGRAM For service, position fully extended boom over left and rest closed bucket on ground. Stop engine. Refer to vendor component literature in service manual for additional lubrication and maintenance requirements.
  • Page 33 elements using cleaning solvent or diesel fuel. Dry Lubrication Notes Lubricate points indicated by dotted leaders on components thoroughly using a lint free cloth. both sides of unit. Apply a light coating of engine oil to all linkage pivot Clean lubrication fittings before lubricating. Drain engine an gear cases only after operation points.
  • Page 34 CG - Chassis Grease (high temperature) per MIL-G-24139 EO - Engine Oil - Refer to Detroit Diesel Service Literature GL - Open Gear Lubricant - Gradall Part No. 8664-1024 GO - Gear Oil - Refer to Manufacturer’s Service Literature HF - Hydraulic Fluid - A.S.L.E. No. H-215 - see specifications below* MC - Dry Graphite Lubricant - Gradall Part No.

  • Page 36: Hydraulic Equipment

    Hydraulic Equipment 406 Mill Avenue, S.W. New Philadelphia, Ohio 44663 PHONE: (330) 339-2211 FAX: (330) 339-8468 WEB SITE: www.gradall.com CALIFORNIA CALIFORNIA Proposition 65 Warning Proposition 65 Warning Battery posts, terminals and related accessories contain lead and lead Diesel engine exhaust and some of its...