Hanix H08B Excavator Manual Set: Service Manual & Parts Catalog (P/N H08BSM0409, H08BPC0309)

This Hanix H08B excavator Manual Set combines the Service Manual (H08BSM0409) and Parts Catalogue (H08BPC0309). Its 18 service chapters cover machine maintenance, hydraulic repair, undercarriage inspection, and electrical fault finding, with the parts catalogue adding component identification.

• Main pump: Removal and installation, hydraulic performance testing, tester connections, and component construction drawings.

• Control valves: Block and spool seal replacement, load-check valve service, main relief adjustment, and selector-valve construction.

• Hydraulic cylinders: Disassembly, packing inspection, reassembly, and attachment drift and speed checks, with boom, arm, bucket, swing, dozer, and extension-cylinder data.

• Slew and travel systems: Motor section views, slew drift and stopping checks, crawler timing, and travel-deviation measurements.

• Undercarriage: Rubber-crawler removal, installation, and tension adjustment, plus inspection standards for the front idler, drive sprocket, and track rollers.

• Electrical diagnosis: Electric circuit diagram with wire-color codes and starter-switch connections, supported by starter and alternator failure-and-remedy tables.

• Parts identification: Exploded assemblies, hydraulic piping layouts, serial applicability, interchangeability codes, and optional roof and J/D pattern control-valve listings.

The hydraulic testing sections are suited to repair technicians with pressure and flow test equipment and experience working on compact excavators.

Hydraulic Testing and Component Repair

The main-pump chapter pairs its performance test with a drawing of the hydraulic pressure tester and hose connections. The Hydraulic circuit diagram maps the pump circuits to the attachment, travel, slew, and extension functions.

Troubleshooting flowcharts address weak operation, travel faults, excessive slew overrun, boom drift, and swing-cylinder problems, helping distinguish pump, relief-valve, control-valve, and swivel-joint causes before component removal.

Control-valve repair covers contact-face O-rings, spool seals, load-check valves, and relief assemblies. The cylinder chapter uses a boom-cylinder teardown illustration and covers packing inspection, cushion-bearing orientation, and reassembly precautions; swivel-joint disassembly and assembly have their own section.

General bolt, nut, and hose-fitting torque tables supplement the component-specific data.

The cylinder inspection notes warn that unsuitable cleaning oil shortens packing life. Keep the machine securely supported and the hydraulic system depressurized during inspection and repair.

Engine References and Scheduled Maintenance

The D722 section provides engine specifications, a performance curve, and standard engine-speed references. It does not contain a full internal engine overhaul procedure; the parts catalogue shows the engine installation and related equipment rather than a breakdown of internal engine spares.

Maintenance tables distinguish initial service from recurring inspections. They cover engine oil, fuel filtration, radiator-fin cleaning, coolant, and hydraulic oil, with later scheduled work extending to the track rollers. Lubrication and fluid-capacity tables cover the engine, radiator, and hydraulic reservoir.

Undercarriage Inspection and Electrical Fault Finding

Attachment tables document pin-to-bush clearances and clevis dimensions. Separate undercarriage sections give track-frame inspection dimensions and standard or allowable wear dimensions for the idler, sprocket, and track rollers.

Rubber-crawler handling notes explain how spilled fuel or hydraulic oil damages the rubber, while salt corrosion affects the bonded core metal.

The Electric circuit diagram identifies the fuse box, glow timer, solenoid timer, regulator, and starter-switch connections. Starter and charging-system tables cover engagement faults, failure to crank, insufficient charging, overcharging, and abnormal noise. Traveling-motor drawings include a Section A-A view showing the motor and reduction mechanism.

Serial-Specific Parts Selection

The swivel-joint and turning-motor tables distinguish revised assemblies and their internal seals. Their serial-applicability and interchangeability columns help match replacement components to the machine before ordering.

Parts coverage also includes the swing frame, radiator installation, hydraulic breaker piping, and optional roof and J/D pattern control valve. These option listings provide parts identification rather than separate repair procedures for each configuration.

Examples from the Pump, Filter and Crawler Specifications

The pump installation section specifies 60.8 N-m (44.8 lb-ft) for the M10 × 25 mounting bolts. The SP08 line-filter specification lists 10-micron filtration accuracy.

For rubber-crawler tension, the installation illustration shows a 10–15 mm (0.4–0.6 in) gap beneath the track roller.

Text Search, Chapter Bookmarks and PDF Contents

Search and diagram access: Text search is available in the parts tables and on a few service-manual pages; most service procedures and circuit diagrams require visual browsing. Embedded bookmarks link the service chapters and the beginning of the parts catalogue. Small circuit labels require zooming; rotating the diagram view also improves readability.

Supplied as one printable, English-language, 265-page PDF containing both publications.

The total includes four covers, five blank service-manual pages, and 17 catalogue spacer and memo pages.