YANMAR B7-3 US EXCAVATOR SERVICE MANUAL – PDF DOWNLOAD

Description

YANMAR B7-3 US EXCAVATOR SERVICE MANUAL – PDF DOWNLOAD

YANMAR B7-3 US EXCAVATOR SERVICE MANUAL – PDF DOWNLOAD:

IMAGE PREVIEW:

DESCRIPTION:

YANMAR B7-3 US EXCAVATOR SERVICE MANUAL – PDF DOWNLOAD

• Correct work means the quickest possible completion of according to the correct procedures and the specified standards.
• It is important when conducting certain operations always to bear in mind the equipment, tools, gauges, materials, oil and grease, etc. that you must have ready, as well as items to be checked, adjusted, or disassembled, and cautions to watch out for.
• (1) Never attempt servicing while engine is running or immediately after stopping operation. (2) Wear work cloths, safety shoes and helmet. (3) Check the equipment and tools before use. Especially, be sure to check the crane, lifting equipment and tools.
• (4) When working together with other persons, allocate everyone’s share of job, arrange the signals and act in concert with the other persons. (5) The operation of the crane and slinging work must be performed by qualified persons.
• (6) Do not enter or pass under the raised load. (7) Lift and support the massive parts by crane before removing the installation bolts. (8) Disconnect cables from battery before repairing the electric system.
• (9) Remove the battery when welding the machine. (1) Check the service record of the machine. (That is, check how many months or hours the machine has been used since the preceding overhaul, what was the trouble then and what parts were replaced.)
• (2) Have all servicing tools ready, i.e., tools, measuring devices (which have received periodic maintenance), containers, oil & grease, etc. (3) Have the service literature (operation manual, parts catalog, etc.) ready.
• (1) Clean the machine before disassembly. (2) Check and record the condition of the machine before disassembly : • Model, machine number, operation hours • Reasons for repair, history of repair •
• Contamination of filters • Fuel and oil condition • Damage to parts, etc. (3) Place alignment marks on the necessary parts to facilitate reassembly. (4) Clean all the removed parts and new replacement parts and put them in order. (5) Use new seals, split pins, etc. for reassembly.

TABLE OF CONTENTS:

YANMAR B7-3 US EXCAVATOR SERVICE MANUAL – PDF DOWNLOAD

CHAPTER 1
GENERAL CAUTIONS FOR MAINTENANCE WORK
1-1 Correct Work ………………………………………………………………………………………………………………………………………………………1-1
1-2 Safety Precautions ………………………………………………………………………………………………………………………………………………1-1
1-3 Preparations……………………………………………………………………………………………………………………………………………………….1-1
1-4 Cautions for Disassembly and Reassembly…………………………………………………………………………………………………………….1-1
1-5 Cautions for Removal and Installation of Hydraulic Equipment ………………………………………………………………………………….1-2
1-6 Cautions for Removal and Installation of Hydraulic Piping…………………………………………………………………………………………1-2
1-7 Cautions for Handling Seals………………………………………………………………………………………………………………………………….1-3
1-8 Correct Installation of Hydraulic Hose…………………………………………………………………………………………………………………….1-3
1-9 Specifications of Hydraulic Hose……………………………………………………………………………………………………………………………1-6
1-10 Air Release of Hydraulic Equipment……………………………………………………………………………………………………………………1-11
CHAPTER 2
TECHNICAL DATA
2-1 Specifications …………………………………………………………………………………………………………………………………………………. 2-1-1
2-2 Outline Drawing and Working Area……………………………………………………………………………………………………………………. 2-2-1
2-2-1 Canopy type …………………………………………………………………………………………………………………………………………… 2-2-1
2-2-2 Cabin type ……………………………………………………………………………………………………………………………………………… 2-2-2
2-3 Weight List of Main Parts …………………………………………………………………………………………………………………………………. 2-3-1
2-4 Lifting Capacity List (For Standard Arm) …………………………………………………………………………………………………………….. 2-4-1
CHAPTER 3
SERVICE STANDARDS
3-1 Machine Performance …………………………………………………………………………………………………………………………………….. 3-1-1
3-2 Engine …………………………………………………………………………………………………………………………………………………………… 3-2-1
3-3 Undercarriage ………………………………………………………………………………………………………………………………………………… 3-3-1
3-3-1 Rubber Crawler Specifications ………………………………………………………………………………………………………………….. 3-3-1
3-3-2 Steel Crawler Specifications……………………………………………………………………………………………………………………… 3-3-2
3-3-3 Common Specifications of Steel & Rubber Crawlers ……………………………………………………………………………………. 3-3-3
3-4 Controls…………………………………………………………………………………………………………………………………………………………. 3-4-1
3-5 Hydraulic Equipment ……………………………………………………………………………………………………………………………………….. 3-5-1
3-5-1 Hydraulic Cylinders …………………………………………………………………………………………………………………………………. 3-5-1
3-6 Implement ……………………………………………………………………………………………………………………………………………………… 3-6-1
3-6-1 Front Attachments …………………………………………………………………………………………………………………………………… 3-6-1
3-6-2 Blade Moving Device……………………………………………………………………………………………………………………………….. 3-6-2
3-6-3 Bucket Teeth ………………………………………………………………………………………………………………………………………….. 3-6-2
3-7 List of Tightening Torque …………………………………………………………………………………………………………………………………. 3-7-1
3-7-1 Machine…………………………………………………………………………………………………………………………………………………. 3-7-1
3-7-2 Engine …………………………………………………………………………………………………………………………………………………… 3-7-4
3-7-3 Tightening Torque for General Bolts and Nuts…………………………………………………………………………………………….. 3-7-4
CHAPTER 4
HYDRAULIC SYSTEM
4-1 Outline…………………………………………………………………………………………………………………………………………………………… 4-1-1
4-1-1 Control Valve Operation …………………………………………………………………………………………………………………………… 4-1-4
4-1-2 Additional Operation of Control Valve ………………………………………………………………………………………………………… 4-1-6
4-2 Hydraulic Circuit Schematic ……………………………………………………………………………………………………………………………… 4-2-1
4-2-1 Standard Specifications……………………………………………………………………………………………………………………………. 4-2-1
4-3 Circuit Operation …………………………………………………………………………………………………………………………………………….. 4-3-1
4-3-1 Boom…………………………………………………………………………………………………………………………………………………….. 4-3-1
4-3-2 Arm……………………………………………………………………………………………………………………………………………………….. 4-3-3
4-3-3 Bucket …………………………………………………………………………………………………………………………………………………… 4-3-5
4-3-4 Swing…………………………………………………………………………………………………………………………………………………….. 4-3-7
4-3-5 Boom Offset …………………………………………………………………………………………………………………………………………… 4-3-9
4-3-6 Blade …………………………………………………………………………………………………………………………………………………… 4-3-11
4-3-7 Travel ………………………………………………………………………………………………………………………………………………….. 4-3-13
4-3-8 Simultaneous Operation of Travel and Boom / Bucket ……………………………………………………………………………….. 4-3-15
4-3-9 Simultaneous Operation of Travel and Arm / Boom Offset ………………………………………………………………………….. 4-3-17
4-3-10 Simultaneous Operation of Boom Up and Arm Retract……………………………………………………………………………… 4-3-19
4-3-11 Simultaneous Operation of Boom Up and Bucket…………………………………………………………………………………….. 4-3-21
4-3-12 Simultaneous Operation of Boom Up and Swing ……………………………………………………………………………………… 4-3-23
4-3-13 Hydraulic P.T.O. ………………………………………………………………………………………………………………………………….. 4-3-25
4-4 Pressure Adjustment ……………………………………………………………………………………………………………………………………….. 4-4-1
4-4-1 Relief Valves ………………………………………………………………………………………………………………………………………….. 4-4-1
4-4-2 Swing Brake Valve ………………………………………………………………………………………………………………………………….. 4-4-3
4-4-3 Cut-off Valve…………………………………………………………………………………………………………………………………………… 4-4-4
CHAPTER 5
HYDRAULIC EQUIPMENT
5-1 Hydraulic Pump………………………………………………………………………………………………………………………………………………. 5-1-1
5-2 Control Valve………………………………………………………………………………………………………………………………………………….. 5-2-1
5-3 Pilot Valve ……………………………………………………………………………………………………………………………………………………… 5-3-1
5-4 Swing Motor …………………………………………………………………………………………………………………………………………………… 5-4-1
5-5 Travel Motor …………………………………………………………………………………………………………………………………………………… 5-5-1
CHAPTER 6
ADJUSTMENT AND REPAIR
6-1 Electric Equipment of the Machine…………………………………………………………………………………………………………………….. 6-1-1
6-1-1 Parts Layout of Electrical Equipment …………………………………………………………………………………………………………. 6-1-1
6-1-2 Monitor and Alarm Systems ……………………………………………………………………………………………………………………… 6-1-4
6-1-3 Wiring Diagram……………………………………………………………………………………………………………………………………….. 6-1-7
6-1-4 Stop Motor Operation ………………………………………………………………………………………………………………………………. 6-1-9
6-1-5 Removal and Reinstallation of Engine ……………………………………………………………………………………………………… 6-1-13
6-1-6 Removal and Reassembly of Starter Motor ………………………………………………………………………………………………. 6-1-22
6-2 Undercarriage ………………………………………………………………………………………………………………………………………………… 6-2-1
6-2-1 Outline …………………………………………………………………………………………………………………………………………………… 6-2-1
6-2-2 Main Parts ……………………………………………………………………………………………………………………………………………… 6-2-1
6-2-3 Points of Reassembly (Rubber Crawler) …………………………………………………………………………………………………….. 6-2-2
6-2-4 Points of Reassembly (Steel Crawler)………………………………………………………………………………………………………… 6-2-3
6-2-5 Disassembly and Reassembly of Steel Crawler…………………………………………………………………………………………… 6-2-4
6-2-6 Disassembly and Reassembly of Idler ……………………………………………………………………………………………………….. 6-2-6
6-2-7 Disassembly and Reassembly of Track Roller…………………………………………………………………………………………….. 6-2-9
6-2-8 Disassembly and Reassembly of Carrier Roller …………………………………………………………………………………………. 6-2-11
6-2-9 Installation of Floating Seal …………………………………………………………………………………………………………………….. 6-2-12
6-2-10 Drawings of Jigs ………………………………………………………………………………………………………………………………….. 6-2-13
6-3 Controls…………………………………………………………………………………………………………………………………………………………. 6-3-1
6-3-1 Control Train…………………………………………………………………………………………………………………………………………… 6-3-1
6-3-2 Mechanical Control Linkage ……………………………………………………………………………………………………………………… 6-3-2
6-3-3 Adjustment of Implement Control Levers ……………………………………………………………………………………………………. 6-3-4
6-3-4 Adjustment of Travel Levers……………………………………………………………………………………………………………………… 6-3-5
6-3-5 Adjustment of Boom Offset Pedal ……………………………………………………………………………………………………………… 6-3-6
6-3-6 Adjustment of Blade Control Lever…………………………………………………………………………………………………………….. 6-3-6
6-3-7 Adjustment of Lock Lever…………………………………………………………………………………………………………………………. 6-3-7
6-3-8 Adjustment Procedure of P.T.O. Pedal ………………………………………………………………………………………………………. 6-3-8
6-3-9 Adjustment of Accelerator Lever ……………………………………………………………………………………………………………….. 6-3-9
6-4 Swing Bearing ………………………………………………………………………………………………………………………………………………… 6-4-1
6-5 Hydraulic Equipment ……………………………………………………………………………………………………………………………………….. 6-5-1
6-5-1 Removal and Reinstallation of Hydraulic Pump …………………………………………………………………………………………… 6-5-1
6-5-2 Removal and Reinstallation of Control Valve ………………………………………………………………………………………………. 6-5-6
6-5-3 Removal and Reinstallation of Swing Motor………………………………………………………………………………………………… 6-5-9
6-5-4 Removal and Reinstallation of Swivel Joint……………………………………………………………………………………………….. 6-5-12
6-5-5 Disassembly and Reassembly of Swivel Joint …………………………………………………………………………………………… 6-5-14
6-5-6 Disassembly and Reassembly of Hydraulic Cylinder ………………………………………………………………………………….. 6-5-17
6-5-7 Hydraulic Oil Tank …………………………………………………………………………………………………………………………………. 6-5-21
6-5-8 Piping Layout………………………………………………………………………………………………………………………………………… 6-5-24
6-6 Work Implements ……………………………………………………………………………………………………………………………………………. 6-6-1
6-6-1 Removal and Reinstallation of Work Implements…………………………………………………………………………………………. 6-6-1
6-7 Cabin…………………………………………………………………………………………………………………………………………………………….. 6-7-1
6-7-1 Cabin…………………………………………………………………………………………………………………………………………………….. 6-7-1
CHAPTER 7
PERIODIC INSPECTION AND SERVICING
7-1 List of Periodic Inspection and Servicing…………………………………………………………………………………………………………….. 7-1-1
CHAPTER 8
FUEL, LUBE OIL AND GREASE RECOMMENDED
8. FUEL, LUBE OIL AND GREASE RECOMMENDED…………………………………………………………………………………………………. 8-1
CHAPTER 9
TROUBLESHOOTING
9-1 Non-breakdowns …………………………………………………………………………………………………………………………………………….. 9-1-1
9-1-1 Natural Release of Bucket………………………………………………………………………………………………………………………… 9-1-1
9-1-2 Discontinuous Arm Movement ………………………………………………………………………………………………………………….. 9-1-1
9-1-3 Drifting of Upperstructure on Quick Travel Operation …………………………………………………………………………………… 9-1-2
9-1-4 Thermal Shock of Travel Motor …………………………………………………………………………………………………………………. 9-1-3
9-1-5 Time Lag on Travel Speed Switching…………………………………………………………………………………………………………. 9-1-4
9-1-6 Fluctuation in Oil Level of Hydraulic Oil Tank due to Temperature Change …………………………………………………….. 9-1-5
9-2 Troubleshooting ……………………………………………………………………………………………………………………………………………… 9-2-1
9-2-1 Machine and Engine………………………………………………………………………………………………………………………………… 9-2-1
9-2-2 Electrical Equipment on Panel ………………………………………………………………………………………………………………… 9-2-22
CHAPTER 10
REFERENCE DATA

PLEASE NOTE:

• This is the same manual used by the dealers to diagnose and troubleshoot your vehicle
• You will be directed to the download page as soon as the purchase is completed. The whole payment and downloading process will take anywhere between 2-5 minutes
• Need any other service / repair / parts manual, please feel free to contact [email protected] . We still have 50,000 manuals unlisted

SK