Caterpillarasphalt paver

Caterpillar BG-230

Specifications · fluids and capacities · maintenance intervals

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The Caterpillar BG-230 is a medium-production, rubber-tire asphalt paver built on Caterpillar's Barber-Greene-derived paving line, sized for city streets, parking lots, industrial sites, and county or highway overlay work rather than mainline interstate paving. The base BG-230 (serial prefix 9AL, dating to the mid-1990s) runs a Cat 3054DIT turbocharged diesel rated about 80 kW (107 hp) at 2200 rpm. The updated BG-230D (serial prefix B4G, introduced around 2006) carries a Cat 3054C turbocharged-aftercooled diesel rated about 97 kW (130 hp) at 2200 rpm; both engines are mechanically governed, with no ECM or digital fault-code tree. Operating weight runs around 12,200 kg (about 26,900 lb), depending on screed and options fitted. Propel is fully hydrostatic with four speed ranges and wheel-based anti-slip traction control, giving a travel speed near 19.2 km/h (about 12 mph). The paver ships with either the Extend-A-Mat 8-16B or the AS2251 screed off a 2.5 m (8 ft 2 in) base frame, extending paving width from 1.8 to 6.1 m (6 to 20 ft), with a choice of diesel-fired or electric screed heat (electric requires the optional onboard generator).

The move from the base BG-230 to the BG-230D was mainly a powertrain upgrade. The 3054C's turbo-aftercooling gave roughly 20 percent more rated power and steadier response under load than the earlier 3054DIT, while keeping the same conservative, non-electronic control architecture: there is no Cat ET session involved, diagnosis is still done with warning lamps and a multimeter against the electrical schematic. That simplicity is a large part of why these pavers hold value in the used market; independent shops and owner-operators can keep one running without dealer-only diagnostic tools. Recurring parts and service demand centers on the 3054 family's known quirks (front-cover and oil-cooler seal leaks that let coolant into the oil, injector tip coking, turbo smoke under load), plus wear items tied to the rubber-tire chassis and hydrostatic driveline: wheel hub bearings, drive chains, and screed plates and slide rails on the Extend-A-Mat or AS2251 screed. Caterpillar continued the BG-series wheeled paver lineup after the BG-230D; later paver generations were sold under different model families and specifications, and no single, clearly documented direct replacement for the BG-230/BG-230D is confirmed.

Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.

Caterpillar BG-230 specifications

Engine

Engine model (early BG-230)	Cat 3054DIT turbocharged diesel, 4 cylinders
Gross power (early BG-230, 3054DIT)	80 kW (107 hp) at 2200 rpm
Engine model (later BG-230D)	Cat 3054C turbocharged diesel, 4 cylinders. The BG-230D chassis was also cataloged as the Cat AP-800D under Caterpillar's alternate paver-line naming
Gross power (later BG-230D, 3054C)	97 kW (130 hp) at 2200 rpm
Displacement	4.4 L (268 cu in), 105 mm x 127 mm bore x stroke, common to the 3054 engine family fitted across both generations
Emissions tier	Not published for this model. Engines of this vintage predate or fall outside standard Tier certification tables; confirm with a dealer for a specific serial range

Weights

Operating weight (without screed)	approx. 12,200 kg (26,901 lb). Published for the BG-230 base chassis, shared with BG-230D; varies with screed and options fitted
Shipping weight	Not separately published for this model
Ground pressure	Not published; not typically issued for this rubber-tire paver class

Dimensions

Length (with screed)	6.48 m (21.25 ft)
Transport width	2.44 m (8 ft)
Transport height	2.62 m (8.6 ft)
Wheelbase	2.34 m (7.67 ft)
Tires	13x22 solid rubber and 16x24 sand-rib tread, as equipped
Ground clearance	Not published for this model

Performance

Travel speed, maximum	19.2 km/h (11.9 mph)
Paving speed, maximum	approx. 76 m/min (249 ft/min), roughly 4.6 km/h
Paving width, standard screed	1.83 m (6 ft)
Paving width, maximum extended	6.1 m (20 ft) with screed extensions fitted (Extend-A-Mat or AS2251-family screed)
Auger diameter	40.6 cm (16 in)
Hopper capacity	approx. 7.2 t as published; this figure carries an inconsistent unit label, treat as approximate and confirm with a dealer
Propel system	Fully hydrostatic drive with four speed ranges, anti-slip control, and steering-wheel control
Gradeability	Not published for this model

Service capacities (summary)

Fuel tank	189 L (50 gal)
Hydraulic system	189 L (50 gal)
Cooling system	19.3 L (5.1 gal)
Engine oil (with filter)	Not published for this model; refer to the Cat 3054 engine service literature for the exact refill spec

Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.

BG-230 fluids & capacities

System	Capacity	Recommended fluid
Engine crankcase, with filter (Cat 3054/3054C 4-cyl diesel)	approx. 6.9-9.5 L (7.3-10 US qt) on the base 3054-powered BG-230; approx. 11-13 L (11.6-13.7 US qt) on the 3054C-powered BG-230D update. Varies by engine generation and dipstick fill level - confirm against this unit's serial-specific manual before topping off.	Cat DEO (Diesel Engine Oil). Select viscosity by ambient temperature per Cat's multi-viscosity chart: SAE 10W-30 for cold climates down to roughly -20C (-4F), SAE 15W-40 for temperate-to-hot climates from about -15C (5F) and up.
Cooling system	approx. 19 L (5.1 US gal) for the full machine circuit (radiator, block, hoses, expansion tank); the engine block/head alone holds close to 7 L (7.4 US qt) of that total.	Cat DEAC (Diesel Engine Antifreeze/Coolant) full-fill formula, or Cat ELC (Extended Life Coolant) on units factory-filled with it. Keep the factory glycol-to-water ratio for the expected climate and never mix coolant types in the same system.
Fuel tank	approx. 189 L (50 US gal).	No. 2-D diesel fuel meeting Cat's diesel fuel specification. Switch to No. 1-D or a winter-blend fuel in cold weather to prevent fuel gelling and filter plugging.
Hydraulic system (tank plus lines, propel and work circuits combined)	approx. 189 L (50 US gal) total system fill.	Cat TDTO (Transmission/Drive Train Oil) is common on this paver family since the hydrostatic propel drive shares the main hydraulic circuit, though some units call for Cat HYDO Advanced hydraulic oil where a dedicated hydraulic-only fill is specified. The two are not interchangeable - confirm which one this unit's manual calls for before adding fluid. Pick the viscosity grade (TDTO 10W/30/50 or HYDO 10W-30/15W-40) by ambient temperature per Cat's chart.
Hydraulic tank (reservoir only)	not published as a separate figure - it is folded into the total hydraulic system capacity above. Fill to the sight gauge or dipstick on the tank itself rather than relying on a total-system number.	Same fluid as the hydraulic system entry above.
Transmission / propel drive	no separate compartment documented. This paver uses a hydrostatic propel drive that draws from the main hydraulic system above rather than a standalone mechanical transmission sump.	Serviced as part of the hydraulic system above - no separate fluid fill.
Final drives / wheel-end gear cases (each)	not documented in available specifications for this model. Check the fill/level plug on each unit and confirm the exact figure against this machine's own manual or with your Cat dealer.	Cat TDTO or Cat GO (Gear Oil), viscosity selected by ambient temperature per Cat's chart.
Grease (all fittings, spec only)	not applicable - service per the grease interval chart, no reservoir capacity to report.	Cat MPGM (Multipurpose Grease), NLGI 2 lithium-complex EP grease, for routine service. For sustained sub-zero operation, use Cat's arctic-grade grease instead.

Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.

Caterpillar BG-230 maintenance schedule

Service interval	Tasks
Every 10 h	Check engine oil, coolant, and hydraulic tank sight-gauge levels before startup; top off as needed. Grease auger and conveyor drive bearings at mid-shift and end of shift while still warm to purge contaminants. Inspect the front timing cover and oil cooler area for coolant or oil seepage before it shows up as milky oil. Check screed heat operation and inspect screed plates for wear or scoring. Check tire pressure, tire condition, and wheel lug torque. Drain water and sediment from the fuel/water separator; clean asphalt buildup off the machine at end of shift.
Every 250 h	Change engine oil and filter on machines run in severe or continuous-duty paving cycles (extend toward 500 hours under lighter duty, per BG-230D factory allowance). Replace the hydraulic return filter element. Check and adjust conveyor and auger drive chain tension. Grease propel wheel hub, steering axle, and linkage points. Inspect alternator belt tension and battery terminal condition on the 24V, dual 12V electrical system.
Every 500 h	Change engine oil and filter (factory interval for the BG-230D under normal duty). Replace the fuel filter and air filter element. Pull a hydraulic oil sample for analysis from the roughly 189 L (50 US gal) reservoir. Check hydrostatic propel pump and motor charge pressure against spec. Inspect screed extension slide rails and wear pads; adjust or shim as needed. Check anti-slip traction control wheel speed sensors and wiring for corrosion or damage.
Every 1,000 h	Check and adjust engine valve lash cold. Inspect the turbocharger for shaft play and oil seepage. Inspect injector spray pattern and tips for coking; service if smoke or power loss under load is noted. Check wheel final-drive/hub gearbox oil level and condition. Inspect warning-lamp circuits and ground connections for corrosion; this engine has no digital fault-code tree, so lamp and wiring integrity carry the diagnosis.
Every 2,000 h	Change the full hydraulic system oil (approximately 189 L / 50 US gal). Change engine coolant, or extend the interval if running Cat ELC with an annual coolant sample on file. Inspect the hydrostatic propel pump and motor for wear; rebuild if charge pressure or speed-range performance has drifted from spec. Replace worn screed plates, nose bars, and tamper/vibrator bearings on the Extend-A-Mat or AS2251 screed. Inspect, and rebuild if needed, wheel hub bearings and steering axle components. Pressure-test the cooling system and replace aged hoses, particularly around the front cover and oil cooler.
Every 4,000 h	Plan a full engine teardown inspection (liners, bearings, turbocharger) consistent with typical wear on small industrial diesels at this duty range. Rebuild or replace the hydrostatic propel pump and motor as a matched set if drift has continued past the 2000-hour inspection. Rebuild the screed as a unit (slide rails, tamper/vibrator assembly, heat elements) rather than patching individual wear parts. Overhaul the steering axle and wheel hubs, and reassess the wiring harness and warning-lamp circuits end to end.

Servicing the BG-230 beyond the schedule

Predictive Maintenance & Fluid Analysis

Run oil sampling (SOS) on the engine and the roughly 189 L (50 US gal) hydraulic reservoir on a fixed interval; rising water or coolant readings point straight at the 3054 family's known front-cover and oil-cooler seal leak before it costs a bearing. Because there is no ECM fault-code tree, track injector condition by exhaust smoke color and power loss under load rather than a scan tool. Watch hydrostatic charge pressure and speed-range shift feel over time; a slow drop signals pump or motor wear well before a failure.

Corrective & Common Repairs

Most corrective work traces to the 3054's front timing cover and oil-cooler seals; reseal at the first sign of coolant-in-oil rather than waiting for a milky dipstick. Decoke or replace injector tips when smoke and power complaints show up under load, this engine has no self-diagnostics to flag it. Chase warning-lamp faults with a multimeter against the machine's electrical schematic, not a laptop. On the wheel-based anti-slip traction control, single-wheel slip complaints usually trace to a speed sensor or its wiring, not the hydrostatic pump itself.

Overhaul & Rebuild Points

Plan a hydrostatic propel pump and motor rebuild once speed-range shifts get sluggish or the anti-slip control starts hunting; this drivetrain carries all four speed ranges, not a torque-converter powershift. Inspect the turbocharger for shaft play whenever smoke complaints recur. Because the BG-230 rides on rubber tires and a steering axle, not tracks, wheel hub bearings and steering linkage take the wear and are the undercarriage rebuild items. On the screed, rebuild extension slide rails, wear pads, and tamper/vibrator bearings on the Extend-A-Mat or AS2251 screed as mat quality degrades.

Seasonal & Environment Servicing

Before winter lay-up, drain and treat the roughly 189 L (50 US gal) fuel tank, drain the fuel-water separator, and protect exposed hydrostatic hoses and conveyor/auger chains from asphalt buildup and corrosion. Verify screed heat function before the first cold-mix day of the season, whether the screed runs diesel-fired heat or electric heat off the optional onboard generator. Check the 24V system, dual 12V batteries, and 55-amp alternator for cold-start reliability. In hot climates, watch hydraulic oil temperature and cooler condition given the 3054's known front-cover and oil-cooler seal leak.

BG-230 common service parts

Part number	Part	Notes
8N-9803	Filter-Fuel	Fuel system service	Check fitment →
119-0073	Filter Element-Fuel	Fuel system service	Check fitment →
102-9387	Filter Element As-Air	Air intake service	Check fitment →
102-9388	Filter Element As-Air	Air intake service	Check fitment →
077-5232	Filter Element-Breather	Hydraulic service	Check fitment →

Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.

BG-230 fault codes & troubleshooting

Code	Meaning	Likely cause	What to do
Engine Oil Pressure warning lamp (red)	Engine oil pressure has dropped below the safe minimum.	Low oil level, worn oil pump, clogged filter, or a faulty pressure sensor/switch.	Shut the engine down immediately, check oil level and look for leaks, then correct the cause before restarting.
Coolant Temperature warning lamp (red)	Engine coolant temperature has exceeded the normal operating range.	Low coolant level, a radiator or side-draft intake screen clogged with asphalt dust, a failed thermostat, or a slipping fan drive.	Idle the engine down, let it cool, then check coolant level and clean the radiator and intake screen before resuming work.
Charging System warning lamp (battery/alternator icon)	Alternator output or battery voltage has fallen below the acceptable range.	A loose or worn drive belt, a failed alternator or regulator, or a loose/corroded battery connection.	Check belt tension and battery terminals first, then test alternator output and replace the alternator or regulator if needed.
Hydraulic Oil Temperature warning lamp (amber/red)	Hydraulic system oil temperature has climbed past the normal working range.	Low hydraulic fluid level, a clogged oil cooler, a failing cooling fan, or a sustained heavy load on the propel or auger/conveyor circuits.	Reduce load and idle the machine to cool the oil, check fluid level, and inspect the cooler core and fan drive for debris or slippage.
Air Filter Restriction indicator (pop-up or amber lamp)	The air cleaner element has reached its service restriction limit.	Dust and asphalt fines loading the primary filter element over time.	Service or replace the air filter element and reset the restriction indicator.
Hydraulic Filter Restriction indicator (pop-up or amber lamp)	The hydraulic return or case-drain filter has reached bypass condition.	Normal filter loading from wear debris, or contamination entering the hydraulic system.	Replace the hydraulic filter element, reset the indicator, and sample the oil if contamination is suspected.

Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.

BG-230 attachments & work tools

Screed systems

This machine pairs with two screed choices: the AS2251 vibratory/tamper screed and the Extend-A-Mat 8-16B screed. Base plate width on the 8-series frame is 2.5 m (8 ft 2 in); bolt-on extensions push documented paving range out to roughly 1.8-6.1 m (6-20 ft), varying with the extension kit fitted.

Screed heat

Both screed options come with a choice of diesel-fired or electric heating elements. Electric heat needs the optional tractor-mounted generator package; diesel heat runs off its own burner and needs no extra generator.

Generator / auxiliary power package

An optional single-phase, tractor-mounted generator (sized for roughly 1,800 rpm operation) feeds an auxiliary power panel rated around 10.8 hp for electrical receptacles. It is sized to run electric screed heat plus jobsite lighting and accessories.

Screed width extensions

Heavy-duty screed frames accept bolt-on extensions for extra-wide mats beyond the base plate width. Exact increment sizes vary by screed model and dealer stock, so confirm the specific kit against the screed fitted.

Tire / undercarriage options

This is a rubber-tire (wheel) paver; no track or Mobil-trac undercarriage is offered in this size class. Drive tires are available in solid-rubber or sand-rib tread, chosen per surface and traction needs on the job.

Propel system

Standard propel is fully hydrostatic with four speed ranges and anti-slip traction control for the drive tires. This is a factory drivetrain configuration rather than a bolt-on option, but it shapes which tire choice suits a given site.

Feeder / auger arrangement

Feeder drives are mounted outboard of the mainframe, clear of the feeder tunnel and asphalt heat, for easier service access. Augers are hydraulically adjustable, raised for transport clearance and lowered to tune material spread ahead of the screed; no model-specific bolt-on auger extension could be verified for this machine.

Model catalog

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Air Inlet and Exhaust System

Air Cleaner Group

Cartridge group-turbocharger

Exhaust Group

Flange Group-Exhaust

Manifold group-exhaust

Manifold Group-Inlet

Precleaner group

Turbocharger group

Basic engine

Camshaft group

Cover Group-Accessory Drive

Cover Group-Front Housing

Cover Group-Valve Mechanism

Crankshaft Group

Cylinder block group

Cylinder head Group

Drive Group-Fan

Drive Group-Pump

Engine group

Flywheel Group

Gear Group-Front

Housing Group-Flywheel

Housing Group-Front

Lifting group-engine

Mounting Group-Alternator

Mounting group-engine

Pan group-oil

Piston & Rod Group

Plug Group-Cylinder Block

Plug group-engine

Pulley Group-Crankshaft

Valve Mechanism Group

Controls

Adjuster Group-Height

Chain Group-Screed

Control Group-Thickness

Crown Group

Jack group-height adjuster

Shaft group-drive

Cooling system

Connection Group-Water

Cooler Group-Fltr Base & Eng Oil

Cooling Group-Supplemental

Extension group-fan

Lines Group-water

Plug Group-Water Lines

Pump Group-Water

Electrical and Starting System

Alternator Group-Charging

Battery Group

Box group-junction

Control group-conv/auger pump dr

Conversion Group-Tow Point

Cover Group-wiring harness

Electrical ar

Installation Group-Controls

Lamp Group-Flood

Lamp Group-Warning Beacon

Lighting group-flood

Motor Group-Electric

Sensor group-auger

Sensor group-position

Starting Aid Group

Starting Motor Group-Electric

Switch as-disconnect

Switch Group-Liquid Level

Switch Group-start

Wiring Group-Engine

Wiring group-hydraulic control

Engine Arrangement

Engine ar

Engine Ar-Primary

Feeder Drag and Auger Conveyors

Actuator Group-Power

Bearing Group-Auger

Chain Group-conveyor

Conveyor Ar-drag & Auger

Conveyor group-auger

Conveyor Group-Drag

Drive group-conveyor

Extension group-auger

Footshaft group

Gate Group-Feeder

Guard Group-Feeder

Lines Group-Lubrication

Shaft group-feeder drive

Frame and body

Arm group-drop

Arm Group-Tow

Brace group

Brace Group-Frame

Bracket group-support

Carriage Group-Extender

Cover Group-engine & Platform

Cover Group-Paver Ventilation

Cover group-platform

Deflector group

Extension group-main frame

Frame Group-Main

Frame Group-screed

Gate group-end

Guard Group-Deflector

Guide Group-steering

Hopper Group

Installation ar-platform cover

Kit-hopper

Plate Group-Screed

Step group

Structural ar

Support Group-Frame

Support group-tow arm

Ventilation Group-Paver

Fuel system

Burner Group

Filter group-fuel

Fitting Group-Fuel Lines

Joint as-tube

Lines group-fuel filter

Lines Group-Fuel Injection

Pump Group-Fuel

Pump group-fuel injection

Pump group-fuel transfer

Tank & Pump Group-Fuel

Grade references

Gauge Group-Indicator

Leveler group

Hydraulic system

Cap As-Filler Breather

Cooler Group-Hydraulic Oil

Cylinder as-hydraulic

Cylinder group-hydraulic

Filter Group-Oil

Hydraulic ar

Indicator group-oil filter change

Lines Group-Auger

Lines Group-Auxiliary Hydraulic

Lines group-conveyor

Lines group-extender

Lines group-grade & slope

Lines group-hopper

Lines group-paver ventilation

Lines group-slope

Lines Group-Steering

Lines Group-Truck hitch

Lines Group-Vibratory

Motor Group-Gear

Motor Group-Gerotor

Motor Group-Hydraulic

Motor group-piston

Pump & Mtg Group-Screed Vibratory

Pump group

Pump group-gear

Pump Group-Metering

Pump group-piston

Rotating group-pump

Tank group-hydraulic

Valve group-bank

Valve group-control

Valve Group-Counterbalance

Valve Group-Flow Control

Valve Group-Manifold

Valve Group-Pump Control

Valve Group-Solenoid

Vibratory Group

Implements

Extension ar

Extension ar-auger

Extension ar-screed

Extension group-screed

Hitch Ar-Truck

Hitch group-truck

Indicator Group-depth

Installation ar-truck Hitch

Roller ar-push

Roller group-push

Shaft group-drive

Lubrication System

Filler Group-engine oil

Fumes Disposal Group

Gauge Group-Oil Level (Dipstick)

Lines Group-Engine Oil

Pump Group-Engine Oil

Machine arrangement

Common ar

Screed ar

Operator station

Console ar

Console group-operator

Gauge Group-Cluster

Horn & Alarm Group

Horn Group-Electric

Lever Group-Propel

Panel Group-Instrument

Platform Group

Platform Group-operator

Seat group

Umbrella ar

Umbrella Group

Power train

Assist Group-Front Wheel

Brake & Planetary Group

Final drive group

Lines Group-Propel

Manifold Group-Front Wheel Drive

Planetary Group-Final Drive

Support group-motor

Valve Group-Differential Lock

Wheel ar

Wheel group

Service Equipment and Supplies

Finish ar

Lines group-spray down

Plate & Film Group

Slope and grade control

Beam ar-transverse

Beam Group-Transverse

Cable group-control

Control ar-grade

Control ar-grade & slope

Control Group-Grade

Control Group-Grade & Slope

Mounting group-control

Sensor ar-Grade

Sensor group-grade

Undercarriage

Bogie group

Mounting group-averaging ski

Undercarriage ar

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103-7338 Air Cleaner Group s/n 9al1-up; 1pm1-up Part of 103-4782 Engine ar

103-7338 Air Cleaner Group s/n 9al1-up; 1pm1-up Part of 103-4782 Engine ar is listed in the Air inlet and exhaust system / air cleaner group catalog section.

Group: Air Inlet and Exhaust System
Subgroup: Air Cleaner Group
Unit: 103-7338 Air Cleaner Group s/n 9al1-up; 1pm1-up Part of 103-4782 Engine ar

Reduced catalog diagram for 103-7338 Air Cleaner Group s/n 9al1-up; 1pm1-up Part of 103-4782 Engine ar — Reduced catalog thumbnail

Parts in this unit

Catalog descriptions with masked part numbers.

Part number	Description
06***76	Elbow; Spare Part 06***76 Elbow (Caterpillar)
07***29	Reducer; Spare Part 07***29 Reducer (Caterpillar)
10***87	Filter Element as-air; (Secondary); Spare Part 10***87 Filter Element as-air (Caterpillar)
10***88	Filter Element as-air; (Primary); Spare Part 10***88 Filter Element as-air (Caterpillar)
10***89	Cover; Spare Part 10***89 Cover (Caterpillar)
10***92	Tube; Spare Part 10***92 Tube (Caterpillar)
10***93	Tube; Spare Part 10***93 Tube (Caterpillar)
10***38	Air Cleaner Group; Spare Part 10***38 Air Cleaner Group (Caterpillar)
10***33	Air Cleaner Group; Spare Part 10***33 Air Cleaner Group (Caterpillar)
10***45	Tube as-air; Spare Part 10***45 Tube as-air (Caterpillar)
11***48	Precleaner Group; Spare Part 11***48 Precleaner Group (Caterpillar)
3g***23	Clamp Assem.; Spare Part 3g***23 Clamp Assem. (Caterpillar)
5c***61	Nut (m8x1.25 thd); (m8x1.25 thd); spare part 5c***61 nut (m8x1.25 thd) (Caterpillar)
5l***33	Fitting (to air cleaner); spare part 5l***33 fitting (to air cleaner) (Caterpillar)
6i***33	Indicator Group-Air Filter Change; Spare part 6i***33 Indicator Group-Air Filter Change (Caterpillar)
8t***24	Washer-to Assemble Valve as and Plates; Spare part 8t***24 Washer-to Assemble Valve as and Plates (Caterpillar)
8t***07	Seal-bulb; (46-cm); spare part 8t***07 seal-bulb (Caterpillar)
9m***59	Clamp Tube Assembly to Flange; Spare Part 9m***59 Clamp Tube Assembly to Flange (Caterpillar)

BG-230 serial number reference

The PIN/serial plate is mounted on the machine frame, generally accessible near the operator's platform on the tractor unit; if worn or missing, check for the number stamped into the frame rail as a backup. Read the first three characters as the prefix, which identifies the model/generation and production block, and the digits that follow as the sequence number within that block (e.g. 9AL00123). Units built from the early-to-mid 2000s onward carry a longer 17-character PIN, with the same 3-character model prefix embedded within that string. Confirm exact serial-break points with a dealer.

Prefix	Identifies	Notes
9AL	BG-230 (base/original series)	Barber-Greene-era Caterpillar design; parts documentation for this serial block dates to the mid-1990s. Rubber-tire, medium-production paver fitted with the Cat 3054 DIT diesel, rated around 107 hp (80 kW) at 2200 rpm. Single manual-sourced - confirm exact serial break with a dealer.
B4G	BG-230D	Marks the redesigned D-series, introduced around 2006. Carries the turbocharged Cat 3054C diesel rated 130 hp (97 kW) at 2200 rpm, up from the base model. Single manual-sourced - confirm exact serial break with a dealer.

Frequently asked questions

What engine does the Caterpillar BG-230 use?

It depends on the series. The original BG-230 (serial prefix 9AL) runs a Cat 3054DIT turbocharged diesel rated about 80 kW (107 hp) at 2200 rpm. The updated BG-230D (serial prefix B4G) runs a Cat 3054C turbocharged-aftercooled diesel rated about 97 kW (130 hp) at 2200 rpm. Both are mechanically governed, with no ECM or digital fault-code tree.

What is the BG-230's operating weight?

Operating weight runs around 12,200 kg (about 26,900 lb). The exact figure varies with the screed fitted (Extend-A-Mat 8-16B or AS2251) and options such as the onboard generator used for electric screed heat.

What replaced the Caterpillar BG-230?

There is no single, clearly documented direct replacement model. Caterpillar continued the BG-series wheeled paver lineup after the BG-230D, and later paver generations were sold under different model families and specifications. If you are sourcing parts or comparing a replacement, match current paving-width and engine-class needs against today's Cat wheel paver lineup rather than assuming a one-to-one successor.

What BG-230 owners discuss

How does the BG-230's hydrostatic propel system behave, and what causes jerky or uneven travel?

The BG-230 runs a fully hydrostatic propel system with four speed ranges, controlled from a steering wheel rather than a tiller bar. Propel speed stays independent of steering input, so mat speed and head of material stay steady through turns. An anti-slip function shifts drive automatically to whichever wheel has traction if the other one slips. Jerky or uneven travel on these usually traces to a weak charge pump, a drifted anti-slip valve, or worn drive motor seals, not the main pump. Because anti-slip and relief settings change how the paver reacts around ground crew, have your dealer verify the setup after any hydrostatic repair.

What wears out first on a BG-230 as the hours climb?

This is a rubber-tire paver, not a tracked one, so wear shows up in the feeder and screed systems rather than an undercarriage. The screed plate is the highest-wear item since every load of mix passes under it, and it needs attention well before most other parts. Auger flights go blunt or pointed from abrasive mix, and outboard auger bearings need regular grease or play shows up at the flight ends. Conveyor chains stretch and sag over time, and hopper floor plates warp from repeated heat cycling. Drive tire wear pattern is also worth checking, since a dragging or uneven-wearing tire often points back to the anti-slip hydraulics rather than the tire itself.

Does engine spec change across BG-230 model years, and what should I watch for?

Yes, it varies by series. Earlier BG-230 units carry a 3054 DIT turbocharged diesel documented around 80 kW (107 hp). The D-series update, the BG-230D, steps up to a 3054C turbocharged diesel rated 97 kW (130 hp) at 2,200 rpm, mounted low and transverse with a cross-draft intake that pulls cooler air from the side of the machine instead of off the hot mat. Both share common 3054-family quirks: a front-cover oil seal that fails and lets coolant migrate into the crankcase, injector tips that coke up and cause smoke and rough idle at high hours, and smoke under load on turbo units once the turbo seals or wastegate start to go. Coolant on the oil dipstick on one of these points to that front-cover seal path more often than a head gasket. Have your dealer confirm the actual failure point before committing to a top-end teardown.

What electrical or sensor problems come up most on these pavers?

The base machine runs a 24-volt DC system off two 12-volt batteries and a 55-amp alternator, enough for lighting and controls but not for electric screed heat. A machine fitted with electric screed heat depends on an engine-driven generator, and a slipping belt, worn brushes, or a failing voltage regulator on that generator shows up as inconsistent screed temperature before anything else. On the material-control side, any head-of-material sensor feeding the auger and conveyor speed control drifts and gives false readings once its face gets coated in dust or fines; a wipe-down and recalibration fixes most complaints that look like an auger control fault. A screed heat loop that hunts or leaves one zone cold usually traces to a bad temperature sensor or heater relay, not the heating element itself. Because this work involves live generator output and screed heating circuits, have your dealer verify wiring before servicing it energized.

Is the BG-230 screed diesel-heated or electric, and does that affect upkeep?

Both existed on this paver. It could be ordered with either screed option, and either could carry a diesel-fired burner or electric heating elements. Diesel-heated screeds need burner nozzle and igniter upkeep and work fine with no generator on board. Electric screeds heat more evenly and come up to temperature faster, but only if the onboard generator and its wiring are sound; on a used machine with a dead generator, the screed will read cold even though nothing is wrong with the heating elements themselves. Confirm which heat type is fitted before assuming a no-heat complaint is a screed fault rather than a generator fault.

What should I check before buying a used BG-230?

Confirm which series it is from the serial prefix first, since the base machine and the D-series update differ in engine output and hydraulic detail, which changes what performance and parts fit to expect. Pull the dipstick and look for a milky or coolant-tinted film, a common tell on 3054-family engines with a failing front-cover or oil cooler seal. Check screed plate thickness and look for flat spots or thin edges, since it's the most expensive wear item to ignore. Check auger flight edges for rounding and confirm the augers raise and lower cleanly on their hydraulic lift. Look at conveyor chains for sag and hopper floor plates for warping. Run the machine and confirm the anti-slip propel actually shifts drive between wheels instead of just spinning one tire, and confirm steering holds propel speed steady through a turn. If it has electric screed heat, load the generator and check both heat zones come up evenly. Have your dealer verify the hydrostatic propel and anti-slip system on a test run before relying on it around ground crew.

Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.

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