Maquinaria Pesada

Service Training
Course Materials

STUDENT MATERIALS

"D" SERIES BACKHOE LOADER SYSTEMS
BUILDING CONSTRUCTION PRODUCTS

BCP BHL 8/02/02

-2-

Student Materials

STUDENT NOTES

BCP BHL 8/02/02

-3-

Student Materials

TABLE OF CONTENTS
COURSE DESCRIPTION......................................................................................................4PRE-COURSE/POST-COURSE ASSESSMENT ..................................................................6 COURSE PLAN/OUTLINE...................................................................................................9 STUDENT LITERATURE CHECKLIST ............................................................................12 MODULE: MACHINE ORIENTATION............................................................................19 MODULE: ENGINE SYSTEMS .......................................................................................23 MODULE: ELECTRICAL SYSTEM ................................................................................35 MODULE: STANDARD POWER TRAIN .......................................................................42 MODULE: AUTOSHIFT AND POWER SHIFT TRANSMISSIONS..............................58 MODULE: AXLES AND BRAKES ..................................................................................74 MODULE: ENGINE, ELECTRICAL AND POWER TRAIN TROUBLESHOOTING ...81 MODULE: STEERING AND IMPLEMENT HYDRAULIC SYSTEMS ........................92 MODULE: STEERING AND IMPLEMENT HYDRAULIC SYSTEMSTROUBLESHOOTING......................................................................................................118 MODULE: ALL WHEEL STEERING ELECTRICAL & Hydraulic Systems ...............124

BCP BHL 8/02/02

-4-

Student Materials

COURSE DESCRIPTION
Backhoe Loader Systems Course Length: 4 1/2 Days Course Ends: 4:00 P.M. Fifth Day Class size: 8 students maximum
CONTENT

WHO SHOULD ATTEND: • Training Instructors • Technical Communicators Thiscourse is designed to teach systems used on "D" series backhoe loaders. Some of these systems have been used on previous backhoe loaders. Classroom work (approximately 30%) will consist of a product performance update and a brief review of both systems operation and testing and adjusting procedures. Students may be required to do additional homework in the evenings. Quizzes will be used to monitorstudent’s progress. Machine "bugging" exercises will be preformed to reinforce student's understanding of system operation and to improve their troubleshooting skills. Major systems to be considered and a brief description of lab exercises are as follows: • Machine Orientation - Students will operate the vehicle noting the characteristics of the brakes, transmission, transmission controls,implement controls, and interaction of the loader function with steering. • Engine Labs - Students will identify and locate components, check high and low idle, torque converter stall, and check engine oil pressure. • Electrical Labs - Students will locate various electrical components and perform proper methods for checking the batteries, starter, alternator, key start switch and relays. The studentswill "bug" the machine to demonstrate the effects of electrical component malfunction. • Transmission Labs - Major emphasis is place on power shift transmission featuring autoshift. The non-power shift transmission will also be also be covered.

BCP BHL 8/02/02

-5-

Student Materials

• Brakes and Axles Lab - Students will perform proper brake performance checks and will be able toexplain power flow through the drive train and differential lock. Performance checks for All Wheel Steer will be performed if machine is available. • Hydraulic System Labs - Students will perform hydraulic system tests as described in the service module for maximum system pressure, margin pressure, and low pressure standby. The students will "bug" the machine to demonstrate the effects of component...