Caterpillar 312D & 312D L Excavators Parts Manual SEBP4949-04 September 2008 PDF

Description

Caterpillar 312D & 312D L Excavators Parts Manual – SEBP4949-04

This is the complete parts identification manual for the Caterpillar 312D and 312D L Excavators, published September 2008 under document number SEBP4949-04. It covers machines from serial number HCW1-Up and JBC1-Up, and engines from JKH1-Up. Every assembly on the machine is broken down into its serviceable components with part numbers, quantities, and illustrations, so you can identify exactly the right part before you order.

File Details

• Manual type: Parts Manual (illustrated parts catalog)
• Brand: Caterpillar
• Models covered: 312D Excavator, 312D L Excavator
• Machine serial ranges: HCW1-Up, JBC1-Up
• Engine serial range: JKH1-Up
• Document number: SEBP4949-04
• Edition / date: September 2008
• Language: English
• Page count: 1127 pages
• File format: PDF

Chapters Covered

The manual follows Caterpillar’s standard parts catalog organization, with an alphabetical index, a maintenance parts index, a numerical part number index, and the following information elements:

• General Information
• Repair Alternatives (Remanufactured Components)
• Supplemental Coolant Additives
• Maintenance Parts
• Index
• Machine Arrangement
• Chassis Arrangement
• General Arrangement
• Installation AR – Blade
• Installation AR – Work Tool
• Machine AR
• Special AR
• Engine Arrangement
• Engine AR / Engine AR – Complete
• Installation AR – Engine
• Basic Engine: Camshaft GP, Cover GP – Valve Mechanism, Crankshaft GP, Cylinder Block GP, Cylinder Head AS, Cylinder Head GP, Flywheel GP, Gear GP – Front, Housing GP – Flywheel, Housing GP – Front
• Mounting GP – Alternator, Mounting GP – Engine, Mounting GP – Starting Motor
• Pan GP – Oil
• Piston & Rod GP
• Pulley AS – Idler, Pulley GP – Fan & Alt Drive, Pulley GP – Idler
• Valve Mechanism GP
• Lubrication System: Adapter GP – Remote Oil Filter, Breather GP, Filter & MTG GP – Engine Oil, Lines GP – Engine Oil, Lines GP – Turbocharger Oil
• Cooling System: Cooler GP – Engine Oil, Cooling AR – High Ambient Temp, Fan GP – Suction, Lines GP – Water, Pump GP – Water, Radiator & Hyd Oil Cooler GP
• Air Inlet and Exhaust System: Air Cleaner GP, Drain GP – Muffler, Lines GP – Air, Manifold GP – Exhaust, Manifold GP – Inlet, Muffler GP, Precleaner AR, Turbocharger GP
• Fuel System: Cap GP – Fuel Filler, Filter GP – Fuel, Filter GP – Water Sep & Fuel, Injector GP – Fuel, Lines GP – Fuel, Lines GP – Fuel Injection, Pump & MTG GP – Fuel Transfer, Pump AR – Fuel Transfer, Pump GP – Fuel Transfer, Tank & MTG AR – Fuel, Tank & MTG GP – Fuel, Tank GP – Fuel, Valve GP – Fuel Shutoff
• Electrical and Starting System: Alarm GP, Alarm GP – Travel, Alternator GP – Charging, Battery & Wiring GP, Battery GP, Block GP – Junction, Camera & Mounting GP, Camera GP, Control & MTG GP – Communication, Control & MTG GP – Engine Elek, Control & MTG GP – Machine, Electronics GP – Communication, Electronics GP – Machine, Electronics GP – Monitor, Fastener GP – Wiring Harness, Installation AR – Communication, Kit – Bracket, Lamp GP – Flood, Lighting GP – Chassis, Panel & MTG GP – Circuit Breaker, Panel GP – Circuit Breaker, Panel GP – Switch, Sensor & MTG GP – Position, Sensor GP – Engine, Sensor GP – Liquid Level, Sensor GP – Position, Starting AR – Cold Weather, Starting Motor GP – Electric, Switch GP – Disconnect, Switch GP – Magnetic, Switch GP – Position, Switch GP – Refueling, Switch GP – Rotary, Switch GP – Start, Switch GP – Toggle, Switch GP – Wiper, Wiring GP – Aux Start Receptacle, Wiring GP – Auxiliary Control, Wiring GP – Cab, Wiring GP – Camera, Wiring GP – Chassis, Wiring GP – Communication, Wiring GP – Console, Wiring GP – Control, Wiring GP – Converter, Wiring GP – Electronic Control, Wiring GP – Fine Swing, Wiring GP – Fuel Pump, Wiring GP – Grade Control, Wiring GP – Heater, Wiring GP – Hydraulic Control, Wiring GP – Medium Pressure, Wiring GP – Overload Warning, Wiring GP – Platform, Wiring GP – Coupler, Wiring GP – Quick Coupler
• Power Train: Final Drive GP, Power Train AR, Sprocket GP
• Frame and Body: Box & Mounting GP, Box GP – Storage, Bumper GP, Counterweight AR, Counterweight GP, Cover AS – Access, Cover GP – Access, Door AS – Access, Door GP – Access, Enclosure GP – Engine, Fender & Cover GP, Frame GP – Upper, Gear & Bearing GP – Swing, Guard GP – Bottom, Guard GP – Front, Guard GP – Swivel, Handrail GP, Hood & Guard GP, Hood AS – Engine, Hood GP, Hood GP – Engine, Sheet AS – Sound Suppression, Step GP, Storage GP – Vandalism Guard, Support AS – Enclosure
• Undercarriage: Frame AR – Undercarriage, Frame AS – Undercarriage, Guard GP – Track Guide, Guard GP – Travel Motor, Idler GP – Front, Link AS – Track, Roller AR – Track, Roller AR – Track & Carrier, Roller GP – Track Carrier, Roller GP – Track – Single Flange, Track Adjuster & Recoil GP, Track GP
• Hydraulic System: Accumulator GP – Hydraulic, Clamp GP – Hydraulic Lines, Control AR – Auxiliary, Control AR – Coupler, Control AR – Fine Swing, Coupling GP – Flexible, Coupling GP – Pump, Cylinder & Lines GP – Blade, Cylinder & Lines GP – Boom, Cylinder & Lines GP – Bucket, Cylinder & Lines GP – Stick, Cylinder & Seal GP – Blade, Cylinder & Seal GP – Boom, Cylinder & Seal GP – Bucket, Cylinder & Seal GP – Stick, Cylinder GP – Blade, Cylinder GP – Boom, Cylinder GP – Bucket, Cylinder GP – Coupler, Cylinder GP – Stick, Drive GP – Swing, Fastener GP – Swing & Final Dr, Fastener GP – Swing Drive, Filter & Valve GP – Pilot, Filter AR, Filter GP – Oil, Fitting GP – Hydraulic, Gauge GP – Sight, Guard GP – Cylinder, Head GP – Pump, Hydraulic AR, Lines AR – Auxiliary Hydraulic, Lines AR – Quick Coupler, Lines GP – Auxiliary Hydraulic, Lines GP – Blade, Lines GP – Blade Cylinder, Lines GP – Boom, Lines GP – Boom Cylinder, Lines GP – Bucket Cylinder, Lines GP – Coupler, Lines GP – Front, Lines GP – Hydraulic, Lines GP – Hydraulic Oil Cooler, Lines GP – Pilot, Lines GP – Pump, Lines GP – Return, Lines GP – Stick, Lines GP – Stick Cylinder, Lines GP – Swing Motor, Lines GP – Travel Motor, Manifold GP – Control, Motor GP – Piston, Motor GP – Swing, Mounting GP – Valve, Pump & MTG GP – Auxiliary, Pump & MTG GP – Main Hydraulic, Pump GP – Piston, Screen GP – Hydraulic, Spool GP – Control Valve, Swivel GP, Tank & Filter GP – Hydraulic, Tank & MTG GP – Hydraulic, Valve & MTG GP – Control, Valve AR, Valve AR – Alt Pattern Control, Valve AR – Check & Relief, Valve AS – Manual, Valve GP – Bank, Valve GP – Check, Valve GP – Control, Valve GP – Load Control, Valve GP – Main Control, Valve GP – Pilot, Valve GP – Pressure Reducing, Valve GP – Relief, Valve GP – Selector, Valve GP – Shuttle, Valve GP – Solenoid, Valve GP – Solenoid & Manifold, Valve GP – Solenoid & Press Redc, Valve GP – Travel Counterbalance
• Implements: Boom AR, Boom AR – 1 Piece Long, Boom GP, Lines GP – Grease, Linkage AR – Bucket, Linkage GP – Bucket, Stick AR, Stick AR – Hoe, Stick GP – Hoe
• Work Tools: Adjuster GP – Bucket, Blade & Mounting GP, Blade GP – Straight, Bucket & Adjuster GP, Bucket AS, Bucket GP, Coupler AR – Quick, Coupler GP – Quick, Edge GP – Cutting, Pin GP – Bucket, Pin GP – Coupler, Sidecutter GP, Tip GP, Tip GP – Abrasion, Tip GP – Long, Tip GP – Penetration, Tip GP – Short, Tip GP – Wide
• Operator Station: Adjuster GP – Seat, Air Conditioner & Mounting GP, Air Conditioner AR, Air Conditioner GP, Armrest GP, Bracket GP – Mirror, Bracket GP – Mounting, Cab GP, Coil GP – Evaporator, Compressor GP – Refrigerant, Condenser & MTG GP – Refrigerant, Condenser GP – Refrigerant, Console GP – Operator, Control & MTG GP – Joystick, Control & MTG GP – Pedal, Control GP – Blade, Control GP – Foot, Control GP – Handle, Control GP – Heat & Air Cond, Control GP – Hydraulic Pedal, Control GP – Joystick, Control GP – Pedal, Cover GP – Cab, Cover GP – Storage, Door & MTG GP – Cab, Door GP – Cab, Duct GP – Cab Air, Floor Mat, Floor Mat GP, Floor Mat AR, Frame GP – Upper Front Window, Guard AR – Overhead, Guard AR – Vandalism, Guard GP – Front Window, Guard GP – Overhead, Guard GP – Vandalism, Hatch GP – Roof, Headrest AS – Seat, Horn GP – Electric, Installation AR, Installation GP – Radio, Kit – Console Adjustment, Kit – Seat Suspension, Lever GP – Air & Temp Control, Lines GP – Air Conditioner, Literature GP, Mirror GP, Mirror GP – Rear View, Monitor & MTG GP – Operator, Monitor GP – Operator, Mounting GP – Antenna, Mounting GP – Platform, Operator AR, Pedal AR – Auxiliary, Pedal AR – Third, Platform GP – Operator, Radio GP – Communication, Screen GP – Sun, Seat & Mounting GP, Seat Belt GP, Seat GP, Seat GP – Suspension, Support GP – Seat, Suspension GP – Seat, Visor GP – Cab, Visor GP – Protection, Washer GP – Window, Window AS – Front, Window GP – Cab, Window GP – Door, Window GP – Rear, Wiper & Washer GP – Window, Wiper AR – Window, Wiper GP – Window
• Service Equipment and Supplies: Film GP, Plate & Film GP

In total this is a full machine-wide parts breakdown: the base engine and its auxiliary systems, the cooling pack, air intake and exhaust, the complete fuel system including transfer pump and injectors, the electrical and starting system with harnesses, panels, switches and sensors, the power train and final drives, the upper frame and bodywork including counterweight, access doors, hood and enclosure panels, the undercarriage with track frames, rollers, idlers, recoil and track groups, the entire hydraulic system from main pump and control valve down to every cylinder, line, hose, swivel and filter, the front-end implements and buckets, and the complete operator station including cab, windows, seat and air conditioning. Each of those information elements opens with a caption identifying the part number and part name plus the PIN and serial number ranges it applies to, followed by an illustrated parts list with reference numbers tied to the exploded view.

How Caterpillar Part Numbers Are Organized in This Manual

The catalog uses Caterpillar’s standard note letters so you can read a parts list quickly. An R note flags a Remanufactured component option, A means the part is not part of that group, B means use as required, C means a change from previous type, M marks a metric part, Y points to a separate illustration, and Z means the part is not serviced separately. The parts manual also documents the 17-character Product Identification Number format introduced in the first quarter of 2001, so you can match the manual’s serial number breaks to the actual machine plate. That matters because a large number of information elements in this book carry serial number breaks – the right part for an early HCW1 machine is not always the right part for a later one.

IMAGES PREVIEW

Why the Right Part Number Matters on a 312D

An excavator is a high-hour, high-load machine working in dirt, rock and mud. A bucket tooth tip, a track roller, a hydraulic hose, a seal kit or an injector that is close but not correct will either fail early or damage the component around it. Caterpillar used several type changes across the 312D and 312D L production run, and this manual records them explicitly with C notes and serial number breaks, so you are not guessing at the parts counter. The exploded illustrations show exactly how each assembly goes together, which is what you need when a fitting, spacer, shim, O-ring or clamp is the missing piece rather than the big component.

Who This Parts Manual Is For

This is the reference for anyone identifying, ordering or assembling components on a 312D or 312D L: workshop technicians rebuilding a stick cylinder or a swing drive, parts personnel confirming a number against the machine’s PIN, owners running their own maintenance on tracks, undercarriage and hydraulics, and rebuilders putting a machine back together from a dismantled state. Because it also documents the Remanufactured Program options, it lets you compare a new part against a remanufactured alternative for items such as alternators, connecting rods, crankshafts, cylinder heads, ECMs, sensors, injectors, fuel nozzles, fuel pumps, governors, oil pumps, pistons, short blocks, starters, turbochargers and water pumps, so you can pick the most cost-effective repair path for a given job.

Get Your Caterpillar 312D & 312D L Parts Manual SEBP4949-04

With this Caterpillar 312D and 312D L Excavators Parts Manual SEBP4949-04 PDF in hand, you can identify the correct part number for any serviceable component on the machine, confirm which serial number range a part applies to, and see exactly how it fits before you order. That eliminates return shipping on wrong parts and eliminates the downtime of a second trip to the dealer. You also get the full illustrated breakdown for the hydraulic cylinders, the swing and travel motors, the main control valve, the undercarriage and the cab, so a rebuild or reseal can be planned part by part instead of guessed at.

Delivery is instant. As soon as your payment is processed the PDF is available for download – no shipping, no waiting for a disc, no customs delay. Read it on a laptop, tablet or phone at the machine, print the pages for the specific assembly you are working on, and keep the full manual as your permanent parts reference for the 312D and 312D L.