8750 WALKING DRAGLINE
WARD LEONARD - STATIC CONTROL - INDEPENDENT PROPEL
SPECI FICATION 8750-34A
Boom Length (Centerline) ".
A- Boom Angle (Approx.) .
B- Dump Radius
C- Dump Height
D- Depth ," .. , .
E- Tub Nominal Outside Diameter
Rail Circle Mean Diameter .
Main Swing Gear Pitch Diameter
F- Width of Shoe
G- Length of Shoe
H- Width over Both Shoes
Length of Step (Approx.) .
J- Rear End Width
K- Length of Rotating Frame
L- Rear End Clearance Radius
M- Clearance Under Rotating Frame
N- Center Rotation to Boom Foot .
P- Ground to Boom Foot
Working Weight, Lbs
Ballast, Lbs. . .
Maximum Allowable Load, Lbs
o
p • M I I E H _I English Metric 335'-0" 102.1 m 32%0 32%0 310'-0" 94.4 m 132'-0" 40.2 m 150'-0" 45.7 m 80'-0" 24.3 m 55'-0" 16.7 m 45'-8" 13.9 m 16'-0" 4.9 m 80'-0" 24.3 m 116'-0" 35.3 m 6'-2" 1.8 m 80'-0" 24.3 m 109'-0" 33.2 m 77'-0" 23.4 m 15'-10" 4.8 m 24'-0" 7.3 m 22'-0" 6.7 m 13,050,000 5,919,480 kg 1,600,000 725,760 kg 571,000 259,005 kg BI006131
PRINCIPALWEIGHTS
PROPEL MACHINERYWEIGHTS: Motor Extension Shaft
1st I ntermediate Shaft
2nd I ntermediate Shaft
Propel Brake
Propel B rake Guard
1st I ntermediate Gear
2nd Intermediate Gear
Propel Motor Coupling
Propel Shaft Propel Gear
Walking Arm Walking Eccentric Eccentric Bearing Housings
Gear Bearing Housings Eccentric Split Collar "'" Stabil izer Arm Link Pin Lateral Ball Joint Shaft Walking Shoe Knuckle Walking Shoe Spherical Bushing Walking Shoe Shaft Bushing Walking Shoe
MACHINERY WEIGHTS: Motor Base Case Cover Main Rotating Gear I ntermediate Gear Motor Extension Shaft I ntermediate Shaft Case Structure Main Rotating Shaft Main Shaft Pinion Main Shaft Sleeve Main Shaft Bearing ( Ibs.) 1,365 6,271 27,438 2,130 320 3,504 10,263 375 39,700 53,066 106,772 48,039 17,730 15,700 4,750 3,683 12,294 20,224 8,986 7,889 3,819 433 329,368 5,224 13,154 18,500 5,546 534 3,520 16,520 23,400 5,000 2,751 985 (kg) 619 2,845 12,446 966 145 1,589 4,655 170 18,008 24,071 48,409 21,790 8,042 7,122 2,155 1,671 5,577 9,174 4,076 3,578 1,732 196 149,401 2,370 5,967 8,392 2,516 242 1,597 7,493 10,614 2,268 1,248 447 BI006131
Main
Propel Gear Hub Propel
ROTATING
Principal Weights (cont.)
HOIST/DRAG DRUM WEIGHTS:
Lagging (Each Section)
Drum End
Split Drive Gear
Bearing
Bearing Housing
HOIST/DRAG GEAR CASE WEIGHTS:
Motor Extension Shaft (Hoist)
Motor Extension Shaft (Drag) Case
BOOM POI NT SHEAVE ASSEMB LY WEIGHTS:
Point Shaft
Sheave (Each)
Bearing (Each)
Total Weight
FAIR LEAD ASSEMBLY WEIGHTS:
, Case Cover (Drag) Intermediate Shaft Assembly (Ibs.) 68,490 26,918 28,068 985 5,171 1/610 1,420 3,900 3,140 23,254 (kg) 31,067 12,210 12,732 447 2,346 730 644 1,769 1,424 10,548-
Cover (Hoist)
Upper Sheave Lower Sheave Swivel Frame Upper Swivel Shaft Lower Swivel Shaft 10,458 3,690 208 32,000 22,273 22,480 17,600 2,158 .2,559 _4,744 1,674 94 14,515 10,103 10,197 7,983 979 1,161 BI006131
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This manual is divided into sections covering various serviceable components and systems of the Model 8750 dragline. These sections are organized by thumb index tabs shown below and right-black ink tab marks.
SECTION 1- INTRODUCTION
SECTION 2- OPERATION
SECTION 3- LUBRICATION
SECTION 4- MECHANICAL ADJUSTMENTS
SECTION 5- ELECTRICAL MAINTENANCE
SECTION 6- COMPRESSED AIR SYSTEMS
SECTION 7- ENGINEERING DATA
SECTION 8- INSPECTION SCHEDULE
I FJ II II 1m II B IIJI.,., ... iii BI006131
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INTRODUCTION INDEX Page General Information 1-1 Safety Precautions 1-2 II Preventive Maintenance 1-6 Warranty 1-8 Training 1-9 BI006131
SECTION 1
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SECTION 1
INTRODUCTION
GENERAL INFORMATION
This manual is designed to assist the owner in the operation and preventive maintenance of this machine. Following easy to understand step-by-step procedures, maintenance personnel can perform these tasks in a safe manner. When a systematic and thorough maintenance/ service procedure (a responsibility of the maintenance superintendent) is used for this machine, minimum unplanned downtime and reliable operation will result.
THIS MANUAL IS NOT THE PARTS BOOK, and cannot be used to order parts. A separate, detailed parts book has been supplied. Please carefully read the instructions in it. All parts are listed by group and/or product code numbers with item/part numbers for THIS SPECIFIC MACHINE. Order parts in exact quantity. Parts ordered by mistake and returned, are subject to a rehandling charge. RIGHT and LEFT HAND PARTS onthe upper frame correspond to the operator's hands at the controls; as seated when operating the mach ine. Please state the correct machine SERIAL NUMBER (located on a plate in the operator's cab) when corresponding or contacting factory service or parts departments. Records on each machine are filed by serial number and when given this number, your machine's specific design and original equipment is accessed quickly by the Dresser parts representative.
Periodic additions or revisions may be made to this manual. These will be mailed direct to you from the factory. Should you require additional information or factory service assistance contact your reg ional service representative or
Service Department
Dresser I ndustries, Inc.
Marion Division
617 West Center Street
P.O. Box 505
Marion,OH 43302
or:
Telephone 614/383-5211
Telex 24-5307
Telecopier 614/383-5211
It is Dresser's policy to improve its products whenever possible and practical to do so. The company reserves the right to make changes or add improvements at any time without incurring any obligation to install such changes on machines sold previously.
Due to this continuous program of product research and development some procedures, specifications and parts may be altered in a constant effort to improve machines.
1-1
II
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SAFETY PRECAUTIONS
AThis safety alert symbol is used here and throughout this manual to call your attention to instructions concerning your personal safety. Carefully read and follow these instructions and observe all safety and danger, and caution graphics mounted on various areas of the machine.
Be certain anyone servicing this machine is aware of these SAFETY PRECAUTIONS. In the event you question your ability to safely perform any of the enclosed maintenance and operational procedures contact your regional Marion service representative or the factory.
The following defines distinctions between safety instructions. In all these definitions the safety alert signal is used.
ADANGER: Denotes extreme intrinsic hazard which exists and could result in high probability of death or irreparable injury if proper precautions are ignored.
ACAUTION: Denotes a reminder of safety practices or directs attention to unsafe practices which could result in personal injury if proper precautions are ignored.
An example of a safety alert symbol and special safety instructions is shown below.
DANG E R: Inherent danger exists in the operation of any high voltage electrical equipment. A safe grounding system includes ground conductors in the power cable, a neutral grou nding resistor and related relays and switchgear. A ground continu ity check system is requ ired by law in many parts of the world.
Operating, maintaining or servicing this machine can be dangerous unless performed properly. Each person must satisfy himself and his employer that he is alert and has the necessary skill and information, proper tools and equipment, and all methods are safe and correct. Factory service representatives and specialists are available to provide additional information or technical assistance. 1-2
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