1982–1986 John Deere 310A & 310B Backhoe Loader Service Manual (P/N TM-1158)

John Deere Technical Manual TM-1158, revised November 1986, covers the 1982–1986 John Deere 310A and 310B Backhoe Loaders. It combines component repair procedures with system operation, diagnosis, testing, and adjustment.

• Engine repair: Engine removal and installation, crankshaft and bearing inspection, piston and cylinder-liner service, cylinder-head repair, and valve adjustment.

• Power train: Constant-mesh transmission repair, planetary reverser disassembly, forward-clutch and reverse-brake service, differential setup, and axle repair.

• Hydraulic diagnosis: Main-pump overhaul, stroke-control valve service, flow-meter testing, hydraulic analyzer procedures, and test-pattern analysis.

• Loader and backhoes: Loader controls and cylinders, 9405 and 9500 backhoe repair, boom and dipperstick service, and attachment-specific hydraulic components.

• Steering and brakes: Power-steering valve and cylinder repair, wet-disk service brakes, brake-valve adjustment and bleeding, and parking-brake service.

• Electrical troubleshooting: Starting and charging tests, wiring diagrams, electrical schematics, wire-routing drawings, and component-location illustrations.

Written for experienced service technicians, this manual assumes familiarity with shop service and the lifting, measuring, and diagnostic equipment specified for the work.

Engine, Fuel System, and Cooling

Engine chapters outline removal, repair, and installation work for the cylinder block, crankshaft, pistons, and cylinder head. They also address replaceable wet cylinder liners, timing gears, the engine balancer, and intake and exhaust manifolds.

Cooling-system coverage includes water-pump repair, thermostat checks, radiator service, and the engine oil cooler.

The fuel section covers injection-pump installation and timing, fuel-system bleeding, and nozzle removal and installation. Identified tools include the JD-259 timing window and JD-256 injection-pump drive-shaft seal installation tool.

Injection equipment scope: Internal injection-pump testing and repair, along with specialized nozzle servicing, are referred to the separate SM-2045 service manual, which is not included in this download.

Transmission, Reverser, and Differential

The power-train sections cover shaft and bearing installation, clutch-pack inspection, differential bearing preload, gear backlash, and tooth-contact patterns. Troubleshooting addresses loss of drive, clutch slip or drag, gear clash, and abnormal transmission or final-drive noise.

The Reverser Unit in Forward Drive and Reverser Unit in Reverse Drive illustrations trace clutch engagement and lubrication. The text explains how forward-clutch drag can burn the clutch pack when the reverser is left in reverse with the engine running and the transmission in park or neutral.

Hydraulic Pump Repair and Fault Isolation

Separate procedures address the earlier and later main hydraulic pump designs, their stroke-control assemblies, and the pump drive. Repair coverage extends to the pressure-control valve, oil cooler, filters, and accumulator.

The Oil Flow Through Main Hydraulic Pump diagram supports the component explanations. Flow-meter tests and the hydraulic analyzer's Test Pattern Analysis Chart connect pressure readings with probable faults.

For symptoms such as a drifting loader or backhoe function, the symptom index directs the technician to cylinder-leakage and function-circuit tests. This provides a practical way to distinguish cylinder leakage from control-valve or relief-valve problems.

Pump assembly cautions explain why misaligned stroke-control passages can prevent destroking and allow pressure to rise until a component fails.

Loader, 9405 Backhoe, and 9500 Backhoe

The bucket data distinguishes standard, heavy-duty, and ejector configurations. Repair sections cover loader frames, control linkages, valve assemblies, and hydraulic cylinders.

The 9405 section includes extendible-dipperstick inspection, removal, repair, and cylinder service. The 9500 section covers its locking control valve and rotary vane-type swing cylinder, keeping these attachment-specific systems distinct.

Follow the manual's equipment-support and hydraulic-pressure precautions when servicing loader arms, backhoe assemblies, or hydraulic components.

Electrical Systems, Brakes, and Chassis

Electrical System Schematic Diagram and Component Wire Routing drawings distinguish wiring configurations by serial number. Circuit tests cover the starter, alternator, lighting, instruments, cab accessories, and parking-brake warning system.

Chassis coverage includes wheel assemblies, axle bearings, steering components, brake valves, and parking-brake linkage. Additional sections address the operator's station, ROPS canopy and cab, sheet metal, predelivery service, and after-sale inspection checklists.

Examples of Differential and Fluid-Capacity Data

The axle specifications give a differential drive shaft hex nut torque of 160 lb-ft, alongside bearing rolling-drag, preload, and gear-backlash data for differential assembly work.

The fluid-capacity table lists 20.5 US gallons for the combined transmission and hydraulic system, with separate entries for transmission-only capacity and engine lubrication.

PDF Bookmarks, Search, and Diagram Detail

Finding text and reading diagrams: Embedded bookmarks provide section and component navigation. Text search is available across much of the manual, but some illustrated and text pages have no searchable text layer, and recognition errors can affect searches. Small wiring labels and component numbers require zooming.

Supplied as one printable, English-language 782-page PDF. The total includes the front and back covers (2 pages) and 68 blank or heading-only pages within the manual.