BOMwiki the bill-of-materials encyclopedia
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Change #30

Accepted by sd on 2026-09-16 03:07. It is live on the pages below; each page's History tab shows the resulting revision.

Change #30 · Deepen the excavator bill of materials: fasteners, wiring, hoses and fittings, engine internals and hardware counted as parts accepted

by sd · 2026-09-16 03:07 · 70 nodes

New: Hex Bolt excavator-hex-bolt

  • Created Hex Bolt (part): "Flanged hex bolt, M8 to M24, used throughout the structure, covers and equipment mounts."

New: Hex Nut excavator-hex-nut

  • Created Hex Nut (part): "Flanged or nyloc hex nut mating the bolts."

New: Washer excavator-washer

  • Created Washer (part): "Flat or spring washer under bolt heads and nuts."

New: Cable Tie & Clamp excavator-cable-tie

  • Created Cable Tie & Clamp (part): "Tie, P-clip or saddle clamp securing wiring, hoses and lines to the structure."

New: Insulated Wire (cut length) excavator-wire

  • Created Insulated Wire (cut length) (part): "One cut-to-length insulated conductor in the harness, terminated at both ends."

New: Crimp Terminal excavator-crimp-terminal

  • Created Crimp Terminal (part): "Tin-plated terminal crimped to a wire end and seated in a connector or on a stud."

New: Fuse excavator-fuse

  • Created Fuse (part): "Blade, midi or cartridge fuse protecting one circuit."

New: Piston Ring excavator-piston-ring

  • Created Piston Ring (part): "Compression or oil-control ring, three per piston."

New: Bearing Shell excavator-bearing-shell

  • Created Bearing Shell (part): "Half-shell plain bearing for a crankshaft main or big-end journal."

New: Poppet Valve excavator-valve

  • Created Poppet Valve (part): "Intake or exhaust valve, four per cylinder."

New: Valve Spring excavator-valve-spring

  • Created Valve Spring (part): "Coil spring closing a valve."

New: Valve Train Component excavator-valve-train-part

  • Created Valve Train Component (part): "Rocker, pushrod or bridge, retainer and collets, guide and seat serving one valve."

New: Camshaft excavator-camshaft

  • Created Camshaft (part): "In-block camshaft driving the valve train and, on older designs, the injection pump."

New: Flywheel & Housing excavator-flywheel

  • Created Flywheel & Housing (part): "Flywheel with ring gear and the housing that couples the engine to the hydraulic pumps."

New: Charge Air Cooler excavator-intercooler

  • Created Charge Air Cooler (part): "Air-to-air intercooler between turbocharger and intake manifold."

New: Air Cleaner Assembly excavator-air-cleaner

  • Created Air Cleaner Assembly (part): "Two-stage air filter with pre-cleaner, housing and restriction indicator."

New: Exhaust Pipe & Muffler excavator-exhaust-pipe

  • Created Exhaust Pipe & Muffler (part): "Exhaust pipe sections, muffler and clamps from turbocharger to stack."

New: Engine Mount excavator-engine-mount

  • Created Engine Mount (part): "Rubber isolator mount between engine and rotating frame."

New: Cooling Fan & Drive excavator-fan-drive

  • Created Cooling Fan & Drive (part): "Suction fan with hub, belt and hydraulic or viscous drive."

New: Engine Sensor excavator-engine-sensor

  • Created Engine Sensor (part): "Speed, position, pressure, temperature, boost, NOx and soot sensors."

New: Engine Gasket & Seal excavator-engine-gasket

  • Created Engine Gasket & Seal (part): "Head, cover, manifold, pump and pan gaskets and small seals."

New: Engine Bolt & Stud excavator-engine-bolt

  • Created Engine Bolt & Stud (part): "Fasteners for the engine assembly."

New: Hydraulic Hose Assembly excavator-hydraulic-hose

  • Created Hydraulic Hose Assembly (part): "Wire-braided or spiral hose with crimped fittings, one run in the hydraulic circuit."

New: Hydraulic Fitting excavator-hose-fitting

  • Created Hydraulic Fitting (part): "ORFS, JIC or flange fitting, adapter or elbow in the hydraulic circuit."

New: Hydraulic Steel Tube excavator-hydraulic-tube

  • Created Hydraulic Steel Tube (part): "Bent and flared steel tube run between valve, pumps and cylinders."

New: Pilot Circuit Valve excavator-pilot-circuit-valve

  • Created Pilot Circuit Valve (part): "Small directional, shuttle or pressure-reducing valve in the pilot circuit: travel pedal valves, pilot manifold and lock valve."

New: Solenoid Valve excavator-solenoid-valve

  • Created Solenoid Valve (part): "Electrically switched valve for pump regulation, swing brake, travel speed and attachments."

New: Hydraulic Accumulator excavator-accumulator

  • Created Hydraulic Accumulator (part): "Gas-charged accumulator holding pilot pressure for lowering equipment with the engine off."

New: Center Swivel Joint excavator-center-joint

  • Created Center Swivel Joint (part): "Rotary manifold passing travel hydraulics from the upper structure to the undercarriage through the slew ring."

New: Cylinder Seal Kit excavator-hydraulic-seal-kit

  • Created Cylinder Seal Kit (part): "Rod seal, buffer seal, wiper, piston seal and wear rings for one cylinder."

New: Hose Guard & Clamp excavator-hose-guard

  • Created Hose Guard & Clamp (part): "Spiral guard, sleeve and clamp protecting and routing hoses along boom and arm."

New: Track Shoe Bolt & Nut excavator-track-bolt

  • Created Track Shoe Bolt & Nut (part): "Hardened bolt and nut fastening one corner of a track shoe to its link."

New: Roller Mounting Bolt excavator-roller-bolt

  • Created Roller Mounting Bolt (part): "Bolt fastening a track or carrier roller to the track frame."

New: Track Guard excavator-track-guard

  • Created Track Guard (part): "Steel guard keeping the chain aligned on the frame."

New: Grease Fitting excavator-grease-fitting

  • Created Grease Fitting (part): "Lubrication nipple on a pin, bushing or bearing."

New: Final Drive Bolt excavator-final-drive-bolt

  • Created Final Drive Bolt (part): "Bolt mounting the final drive and sprocket to the track frame."

New: Slew Ring Bolt excavator-swing-bearing-bolt

  • Created Slew Ring Bolt (part): "High-strength bolt fastening the swing bearing to the upper and lower frames."

New: Cover & Hood Panel excavator-cover-panel

  • Created Cover & Hood Panel (part): "Sheet-steel engine hood, side door or cover panel on the upper structure."

New: Hinge & Latch excavator-hinge-latch

  • Created Hinge & Latch (part): "Hinge, gas strut or latch on a hood, door or cover."

New: Handrail & Step excavator-handrail

  • Created Handrail & Step (part): "Access step, handrail or anti-slip plate on the upper structure."

New: Mirror excavator-mirror

  • Created Mirror (part): "Convex rear or side mirror."

New: Camera excavator-camera

  • Created Camera (part): "Rear or side-view camera feeding the cab monitor."

New: Battery Box & Toolbox excavator-battery-box

  • Created Battery Box & Toolbox (part): "Lockable compartment for the batteries and tools."

New: Counterweight Bolt excavator-counterweight-bolt

  • Created Counterweight Bolt (part): "Large bolt fastening the counterweight to the frame."

New: Pin Bushing excavator-bushing

  • Created Pin Bushing (part): "Steel or bronze bushing pressed into a pin bore."

New: Shim & Thrust Ring excavator-shim

  • Created Shim & Thrust Ring (part): "Shim or thrust ring taking up side play at a pin joint."

New: Pin Retainer excavator-pin-retainer

  • Created Pin Retainer (part): "Retaining bolt, plate or lock pin holding a pivot pin in place."

New: Grease Line excavator-grease-line

  • Created Grease Line (part): "Tube from the lubrication point to the pin."

New: Cab Glass excavator-cab-glass

  • Created Cab Glass (part): "Laminated or tempered pane: windshield, door, side, rear or roof window."

New: Cab Door excavator-cab-door

  • Created Cab Door (part): "Framed glazed door with hinges, latch, slide window and lock."

New: Wiper & Washer excavator-wiper

  • Created Wiper & Washer (part): "Wiper motor, arm and blade with washer pump and reservoir."

New: Cab Mount excavator-cab-mount

  • Created Cab Mount (part): "Viscous or rubber isolation mount between cab and frame."

New: Cab Interior Trim excavator-interior-trim

  • Created Cab Interior Trim (part): "Moulded trim panel, headliner or floor mat piece inside the cab."

New: Travel Pedal & Lever excavator-travel-pedal

  • Created Travel Pedal & Lever (part): "Pilot-operated travel pedal with lever for one track."

New: Switch excavator-switch

  • Created Switch (part): "Rocker, rotary or key switch on the cab console."

New: HVAC Duct & Vent excavator-hvac-duct

  • Created HVAC Duct & Vent (part): "Air duct and louvre vent in the cab."

New: Seat Belt excavator-seat-belt

  • Created Seat Belt (part): "Retractable lap belt on the operator seat."

New: Cab Radio excavator-radio

  • Created Cab Radio (part): "AM/FM radio with speakers."

New: Sound Insulation Pad excavator-sound-insulation

  • Created Sound Insulation Pad (part): "Foam or bitumen pad bonded inside the cab shell."

New: Trim Clip excavator-trim-clip

  • Created Trim Clip (part): "Plastic fastener for interior trim."

New: Beacon & Horn excavator-beacon

  • Created Beacon & Horn (part): "Rotating or LED beacon and electric horn."

New: Machine Sensor excavator-sensor

  • Created Machine Sensor (part): "Angle, pressure, temperature, level or speed sensor feeding the machine controller."

New: Travel Alarm excavator-travel-alarm

  • Created Travel Alarm (part): "Audible alarm sounding when the machine moves."

Diesel Engine excavator-diesel-engine

  • Added excavator-piston-ring × 18
  • Added excavator-bearing-shell × 26
  • Added excavator-valve × 24
  • Added excavator-valve-spring × 24
  • Added excavator-valve-train-part × 24
  • Added excavator-camshaft × 1
  • Added excavator-flywheel × 1
  • Added excavator-intercooler × 1
  • Added excavator-air-cleaner × 1
  • Added excavator-exhaust-pipe × 3
  • Added excavator-engine-mount × 4
  • Added excavator-fan-drive × 1
  • Added excavator-engine-sensor × 20
  • Added excavator-engine-gasket × 40
  • Added excavator-engine-bolt × 620
  • Added Connector × 48: "engine harness"
  • Added Oil Seal × 6
  • Added excavator-hex-bolt × 60: "mounts, radiator, guards"
  • Added excavator-hex-nut × 40

Hydraulic System excavator-hydraulic-system

  • Added excavator-hydraulic-hose × 130
  • Added excavator-hose-fitting × 280
  • Added excavator-hydraulic-tube × 44
  • Added excavator-pilot-circuit-valve × 10
  • Added excavator-solenoid-valve × 10
  • Added excavator-accumulator × 2
  • Added excavator-center-joint × 1
  • Added Pressure Sensor × 8
  • Added O-Ring Set × 40
  • Added excavator-hex-bolt × 360
  • Added excavator-hex-nut × 200
  • Added excavator-washer × 200
  • Added excavator-cable-tie × 220

Undercarriage excavator-undercarriage

  • Added excavator-track-bolt × 400: "four per shoe"
  • Added excavator-roller-bolt × 144
  • Added excavator-track-guard × 4
  • Added excavator-grease-fitting × 24
  • Added excavator-final-drive-bolt × 48
  • Added excavator-hex-bolt × 200
  • Added excavator-hex-nut × 120

Upper Structure excavator-upper-structure

  • Added excavator-swing-bearing-bolt × 72
  • Added excavator-cover-panel × 14
  • Added excavator-hinge-latch × 36
  • Added excavator-handrail × 8
  • Added excavator-mirror × 3
  • Added excavator-camera × 2
  • Added excavator-battery-box × 1
  • Added excavator-counterweight-bolt × 8
  • Added excavator-hex-bolt × 700
  • Added excavator-hex-nut × 420
  • Added excavator-washer × 420

Work Equipment excavator-work-equipment

  • Added Pivot Pin × 10: "boom, arm and cylinder pins; bucket linkage pins counted there"
  • Added excavator-bushing × 28
  • Added excavator-shim × 40
  • Added excavator-pin-retainer × 14
  • Added excavator-grease-line × 14
  • Added excavator-grease-fitting × 20
  • Added excavator-hose-guard × 12
  • Added excavator-hydraulic-seal-kit × 6: "boom, arm, bucket cylinders"
  • Added excavator-hex-bolt × 80

Operator Cab excavator-cab

  • Added excavator-cab-glass × 6
  • Added excavator-cab-door × 1
  • Added excavator-wiper × 2: "upper and lower windshield"
  • Added excavator-cab-mount × 4
  • Added excavator-interior-trim × 14
  • Added excavator-travel-pedal × 2
  • Added excavator-switch × 24
  • Added excavator-hvac-duct × 6
  • Added excavator-seat-belt × 1
  • Added excavator-radio × 1
  • Added excavator-sound-insulation × 12
  • Added excavator-trim-clip × 220
  • Added excavator-hex-bolt × 220
  • Added excavator-hex-nut × 120

Electrical System excavator-electrical

  • Added excavator-wire × 1200
  • Added excavator-crimp-terminal × 2400: "two per wire"
  • Added Connector × 260
  • Added excavator-fuse × 40
  • Added excavator-sensor × 30
  • Added excavator-beacon × 1
  • Added excavator-travel-alarm × 1
  • Added Electronic Control Unit × 3: "engine, monitor, air conditioning"
  • Added excavator-cable-tie × 420

Machine findings

  • Diesel Engine: 27 direct children (dominant function: Regulate flow) — worth checking for integration or standardization
  • Operator Cab: 19 direct children (dominant function: Communicate signal) — worth checking for integration or standardization
  • Hydraulic System: 19 direct children (dominant function: Regulate flow) — worth checking for integration or standardization
  • Electrical System: 16 direct children (dominant function: Connect electrically) — worth checking for integration or standardization
  • Work Equipment: 16 direct children (dominant function: Communicate signal) — worth checking for integration or standardization
  • Undercarriage: 15 direct children (dominant function: Guide motion) — worth checking for integration or standardization
  • Upper Structure: 15 direct children (dominant function: Fasten or join) — worth checking for integration or standardization
  • Excavator functions after this change: Connect electrically, Fasten or join, Guide motion