Part of the Yanmar Parts Manuals.
A split hydraulic hose on a Yanmar B05 stops the dig in an afternoon, and guessing at a replacement part number usually costs you a second trip and another day with the machine parked. This 110-page factory parts catalog (Yanmar publication Y00K2642) puts the exploded drawings for the B05, B05 G, B05 P, B05 Y, B05 G EX, B05 G AY and the L70ADEB diesel engine in front of you, so the part you order is the part that fits.
Coverage runs from 1990 to 1996 by serial number prefix, and the book breaks the crawler backhoe down figure by figure: boom, arm and bucket cylinders, control valve, hydraulic piping, driving and turning motors, undercarriage, electrics, fuel system, seat and bonnet.
Match the drawing to the broken piece, order once, and get the machine digging again instead of waiting on parts that were never right.
What's Inside This Yanmar B05 G / P / Y (Crawler Backhoe) Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Accelerator, Fuel Tank & Fuel Line | |
| Engine | Hyd. Oil Pump & Pump Mount, Engine Mount & Engine Accessory, Silencer | |
| Electrical System | Work Lamp, Battery, Electric Part | |
| Undercarriage & Travel | Idler, Track Roller & Crawler | |
| Hydraulics & 3-Point Hitch | Control Valve, Hyd. Oil Piping, Arm Cylinder, Hyd. Oil Tank, Bucket Cylinder, Boom Cylinder, Swing Cylinder, Blade Cylinder, Hyd. Oil P. T. O, Turning Motor, Swivel Joint, Selector Valve | |
| Loader, Backhoe & Attachments | Boom & Arm, Bucket, Blade | |
| Body & Operator Station | Link Stand, Cover & Instrument Panel, Seat & Bonnet, Frame | |
| Decals & Accessories | Label, Safety Label, Greasing | |
| Other Components | Control Equipment, Driving Motor, Turning Driving Equipment, Operation Lever Stopper |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuse rating | 10A | p. 33 |
Yanmar B05 G / P / Y (Crawler Backhoe) Common Problems This Manual Covers
Hydraulic hoses leaking or weeping
Old hoses and fittings on these machines harden and seep, and hydraulic hoses are among the most commonly replaced parts. The Hyd. Oil Piping figures show every hose, pipe and fitting with its part number so you can replace a run instead of patching it.
Manual Section: Hyd. Oil PipingNo start or intermittent power loss
Corroded battery terminals, chafed wiring and blown fuses are the usual suspects when a B05 dies or refuses to crank. The Electric Part section, along with the Battery figure, identifies the switches, harness pieces and fuses you need to put the circuit right.
Manual Section: Electric PartWorn sprockets, rollers and tracks
Undercarriage wear shows up as slipping tracks, rough travel and noise, and it is a routine wear item on compact crawler machines. The Idler, Track Roller & Crawler figures break the undercarriage into individual replaceable parts.
Manual Section: Idler, Track Roller & CrawlerBoom drifts down under load
A boom that settles while you work usually points to worn cylinder seals. The Boom Cylinder figure lists the cylinder assembly and its components so you can order a seal kit or replacement parts by number.
Manual Section: Boom CylinderSticky or erratic control response
Levers that bind or functions that respond inconsistently often trace back to the control valve or its linkage. The Control Valve figures identify the valve components, and the Control Equipment section covers the levers and linkage feeding it.
Manual Section: Control ValveFuel starvation from tank or lines
Sediment in an old tank and cracked fuel lines starve the L70ADEB diesel and cause surging or stalling. The Fuel Tank & Fuel Line figure shows the tank, lines and related hardware with part numbers for a clean refit.
Manual Section: Fuel Tank & Fuel LineSlop in boom and arm pins
Worn pins and bushings put play in the boom and arm and make precise digging impossible; they are a frequent replacement on machines this age. The Boom & Arm figure identifies each pin and bushing individually.
Manual Section: Boom & ArmFrequently Asked Questions
Which Yanmar models does this parts catalog cover?
It covers the Yanmar B05, B05 G, B05 P, B05 Y, B05 G EX and B05 G AY crawler backhoes built from 1990 to 1996, plus the L70ADEB engine. Coverage is keyed to serial number prefixes 00501~, 00604~, 00615~, 10660~, 10955~ and 00101~.
Does the catalog include machine specifications?
Yes. The Specifications section on page 2 covers the engine, dimensions, standard bucket capacity, maximum digging depth, maximum bucket digging force and machine mass, which is useful for transport planning and confirming you have the right machine. p. 2
Can I find the original paint colors for a restoration?
Yes. The Vehicle Painted Color section on page 3 lists each painted part with its Munsell number and color code by effective machine number, and the following page gives the paint part numbers for the main parts, so you can order or match factory-correct paint. p. 3
Does it cover electrical parts like fuses and wiring?
Yes. The Electric Part, Battery and Work Lamp sections identify the electrical components, and the catalog lists the 10A fuse rating on page 33. That makes it straightforward to chase the terminal, switch and fuse issues these machines are known for. p. 33
Is this Yanmar B05 manual a download or a disc?
Immediate download of the complete 110-page searchable Parts Catalog (2 MB). Access it on any device, from a laptop at your desk to a phone in the field.
Can I print a copy of this Yanmar B05 Parts Catalog for the shop?
Zero restrictions. The PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
Can I find hydraulic circuit diagrams in this Yanmar B05 manual?
Yes, this Yanmar B05, B05 G, B05 P, B05 Y, B05 G EX, B05 G AY, L70ADEB Parts Catalog includes a hydraulic system diagram.
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