Caterpillarwork toolbroom-angle

Caterpillar BA22

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar BA22 is a hydraulic angle broom work tool for skid steer loaders, compact track loaders, backhoe loaders, and compact to small wheel loaders. It carries no engine, fuel tank, cooling system, or dedicated hydraulic reservoir; a gerotor motor displacing 245 cm3/rev (15 in3/rev) turns the brush core directly off the host carrier's auxiliary circuit, drawing 40-75 L/min (11-20 gpm) at 150-260 bar (2176-3771 psi) for a brush speed near 306 rpm. Operating weight is about 410 kg (903.9 lb). Sweeping width runs 2200 mm (86.6 in) straight and narrows to 1900 mm (74.8 in) angled, with an overall width of 2400 mm (94.5 in) straight and 2100 mm (82.7 in) angled, a 700 mm (27.6 in) brush diameter, 1300 mm (51.2 in) height, and 1535 mm (60.4 in) length. The head swings up to 30 degrees either side of straight, positioned hydraulically or by a manual detent pin, with a 12V circuit handling angle control. It ships in one hydraulic-angle, 12V, polypropylene-and-wire configuration and mounts through a hook group matched to the carrier's coupler style, sitting in a broader Cat broom lineup alongside the smaller BA18, the larger BA25 and BA30 angle brooms, and the hopper-equipped BP22/BP25 pickup brooms.

Across the angle-broom lineup Cat has moved from model-specific parts documentation toward shared manuals covering several sizes at once, and the BA22 sits inside that shift: an earlier parts manual grouped it with a sibling angle broom and two pickup brooms under its own serial-prefix line, while a later manual folds the BA22 in with the BA25 and BA30 under a shared prefix set for the current generation. What stays constant across the family is the field-replaceable bristle format, offered in polypropylene, wire, or a mixed core depending on surface and debris type, the free-float suspension that keeps the core on the ground without support wheels, and the optional water-sprinkler kit for dust control. No confirmed replacement or discontinuation has surfaced, so the BA22 reads as still-current rather than a superseded part number. Its value in the used and parts market comes from being carrier-agnostic: the hook-group coupler lets it retrofit across brands and machine classes, and because it has no engine or ECM, resale condition turns on bristle wear, coupler and pivot play, and hydraulic motor seal health rather than hour-meter or fault-code history, keeping steady demand for the same handful of wear parts.

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 BA22 specifications

Engine

Power source	No onboard engine. BA22 is a passive hydraulic angle broom driven entirely by the carrier machine's hydraulic system; angle broom rotation runs off carrier hydraulic flow, angling function uses a 12V electric actuator.
Emissions tier	Not applicable — no engine fitted to this attachment.

Weights

Operating weight	410 kg (903.9 lb)
Ground pressure	Not published — attachment weight is carried through the host carrier, no standalone ground pressure figure applies.

Dimensions

Overall width (straight)	2400 mm (94.5 in)
Overall width (angled ±30°)	2100 mm (82.7 in)
Sweeping width (straight)	2200 mm (86.6 in)
Sweeping width (angled ±30°)	1900 mm (74.8 in)
Brush diameter	700 mm (27.6 in)
Height	1300 mm (51.2 in)
Length (front to back)	1535 mm (60.4 in)

Performance

Angle range	±30 degrees left or right, hydraulically or manually positioned, plus a straight (0°) position
Brush speed at maximum flow	306 rpm
Optimal hydraulic flow	40-75 L/min (11-20 gpm)
Optimal hydraulic pressure	150-260 bar (2176-3771 psi)
Motor displacement	245 cm³/rev (15 in³/rev), direct-drive brush motor
Electrical system	12V, used for hydraulic angle-positioning control
Carrier compatibility	Skid steer loaders, compact track loaders, backhoe loaders, and compact/small wheel loaders equipped with an IT-style coupler; requires the hook-group interface

Service capacities (summary)

Fuel tank	Not applicable — no engine on this attachment
Hydraulic system	No dedicated onboard reservoir; broom motor runs directly off the host carrier's hydraulic circuit at 40-75 L/min, 150-260 bar
Engine oil	Not applicable — no engine on this attachment
Cooling system	Not applicable — no engine on this attachment

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

BA22 fluids & capacities

System	Capacity	Recommended fluid
Engine crankcase (with filter)	Not applicable — BA22 is a passive hydraulic angle broom work tool with no onboard engine.	Not applicable.
Cooling system	Not applicable — no engine, no cooling system on the attachment.	Not applicable.
Fuel tank	Not applicable — the attachment carries no fuel supply of its own.	Not applicable.
Transmission / powertrain compartments	Not applicable — the broom head is driven directly by a hydraulic motor; there is no separate transmission or powertrain compartment to fill.	Not applicable.
Final drives	Not applicable — no final drives fitted; the bristle core is turned directly by its hydraulic motor.	Not applicable.
Hydraulic system and tank	BA22 carries no dedicated hydraulic reservoir. The broom's gerotor motor and angling cylinders run off the carrier machine's own hydraulic circuit and draw from the host unit's tank, so there is no separate BA22 fill capacity to publish.	Use whatever hydraulic fluid the host carrier (skid steer, compact track loader, compact wheel loader, or backhoe loader) specifies in its own operation and maintenance manual. The broom itself has no independent fluid requirement — match the carrier's hydraulic oil grade and climate-based viscosity guidance.
Axles / differentials	Not applicable — the attachment has no axle or differential; it mounts to the carrier's quick coupler or loader arms.	Not applicable.
Grease (fitting points)	No fill capacity is specified. Lubricate all grease fittings on the broom frame, angling pivots, and bearing points until fresh grease purges from the joint, per the standard Cat work-tool interval.	Cat Multipurpose Grease (NLGI Grade 2, lithium-complex EP) or an equivalent multipurpose EP2 grease. No separate cold-weather/hot-weather grease grade is published specifically for this attachment.

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

Caterpillar BA22 maintenance schedule

Service interval	Tasks
Every 10 h	Walk around the broom before startup and check bristle sections for missing wafers, torn wire tufts, or uneven wear across the core. Inspect hydraulic hoses and quick-disconnect couplers for cuts, abrasion, or seepage before hookup to the carrier. Confirm the mount plate seats fully on the carrier coupler with lock pins engaged and no play. Cycle the angle function fully left and right, checking for binding before starting sweeping work. Check the gerotor motor shaft-seal area for wetness after the first few minutes of running.
Every 250 h	Grease all angling pivot pins and mount-plate bushings until fresh grease purges from each joint. Inspect bristle wear and rotate or re-index sections so wear stays even across the core width. Re-torque coupler mounting hardware and hook-group bolts to spec. Check the angle-cylinder rod and linkage pins for early wear or scoring.
Every 500 h	Verify carrier auxiliary hydraulic flow and pressure at the broom inlet fall within 40-75 L/min (11-20 gpm) at 150-260 bar (2176-3771 psi); do not assume the broom is at fault if angling feels weak. Inspect the gerotor motor housing and mounting bolts for cracks, looseness, or weeping seals. Inspect the angle-cylinder seals for leakage and the rod for scoring or corrosion. Check the parking-stand and frame welds for cracking, especially where the mount plate meets the main frame.
Every 1,000 h	Pull and inspect the gerotor motor shaft seal; replace it if case leakage or drip has increased above normal. Measure remaining bristle wafer diameter against the 700 mm (27.6 in) new-condition spec and plan section replacement once wear approaches half that diameter. Inspect the brush-core bearings and shaft for play or noise under load. Inspect mount-plate and coupler pins and bushings for elongation or play; replace as needed. Check the connector and wiring at the 12V angle circuit for corrosion or a loose ground.
Every 2,000 h	Overhaul or replace the gerotor motor if case leakage, sweep-torque loss, or internal noise persists after seal service. Replace bristle sections as a full set once wear is uneven beyond what rotation can correct. Rebuild the angling mechanism pins, bushings, and cylinder as a matched set rather than piecemeal. Refurbish the mount-plate and coupler wear surfaces before they affect carrier lock-up.
Every 3,000 h	Do a full teardown inspection of the main frame and angling brackets for fatigue cracking at pivot points and the mount plate. Replace all angling pivot pins and bushings regardless of measured wear at this stage. Rebuild or replace the hydraulic motor as a complete unit rather than reseal it again. Evaluate the hook-group coupler interface for wear against current carrier compatibility before returning the broom to service.

Servicing the BA22 beyond the schedule

Predictive Maintenance & Fluid Analysis

BA22 carries no reservoir of its own, so predictive care rides on the host carrier's hydraulic fluid. Sample the carrier's hydraulic oil on its normal interval since the gerotor motor's case drain pushes wear debris back into the shared circuit. Track case-drain flow and motor case temperature at the coupler for early signs of internal motor wear. Watch bristle wear rate against logged hours; an uneven jump on one side signals a misaligned angling frame before it damages the brush-core bearing.

Corrective & Common Repairs

Most no-angle complaints on a BA22 trace to the carrier's auxiliary circuit or a weak switch/connector, not the broom itself, so confirm carrier flow and 12V continuity before pulling the tool apart. Shaft-seal weeping at the gerotor motor is the most common wear failure; a light weep calls for a reseal, steady drip means the seal is gone. Worn bristle wafers are replaced by section, not as a full core, until wear passes roughly half the 700 mm original diameter.

Overhaul & Rebuild Points

Overhaul on the BA22 centers on the gerotor motor's shaft seal and case-drain path, the angling pivot pins and bushings, and the mount-plate coupler pins. Because the motor pulls no independent reservoir, internal wear shows up as case leakage or lost sweep torque rather than a fluid-level drop. Rebuild the angling mechanism as a matched set of pins and bushings, not piecemeal, to keep both 30-degree stops accurate and the leveling indicator true.

Seasonal & Environment Servicing

Before cold-weather storage, relieve residual pressure from the hydraulic couplers, cap the fittings, and rest the BA22 on its parking supports rather than on the bristles. Since the broom has no engine or coolant, cold-weather performance depends entirely on the host carrier's hydraulic oil viscosity; confirm the carrier is set up for cold-start operation before heavy sweeping. In spring or after wet storage, re-check bristle stiffness and flex, since polypropylene sections can set or stiffen after months idle.

BA22 common service parts

Part number	Part	Notes
8T-7915	Adapter-To Transmission Filter	Scheduled service item	Check fitment →
311-0060	Filter-Water	Scheduled service item	Check fitment →
236-0836	Filter-Water	Scheduled service item	Check fitment →

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BA22 attachments & work tools

Machine identity and class

BA22 is itself a Cat work tool, a hydraulic angle broom, not a host machine that takes attachments. It mounts to carriers rather than the other way around: skid steer loaders, compact track loaders, backhoe loaders, compact wheel loaders, and small wheel loaders.

Coupler / mounting interface

Mounts via a broom hook group matched to the carrier's quick-coupler style (skid steer, IT/tool-carrier, or backhoe-loader hook interface). The hook group is a separate machine-side kit selected to match the specific carrier's coupler, not built into the broom itself.

Hydraulic drive requirement

Direct-drive hydraulic motor turning the brush core; runs on the carrier's standard-flow auxiliary circuit. Optimal flow is commonly listed around 40-75 L/min (11-20 gpm) at 150-260 bar (2176-3771 psi), though some dealer listings show a wider window near 20-87 L/min - treat flow/pressure figures as varying by carrier configuration and confirm against the carrier's aux-hydraulics rating.

Angle adjustment mechanism

Sweeps straight or angles about 30 degrees left or right of center, either hydraulically (via the carrier's aux circuit) or manually with a detent pin, depending on how the unit is ordered. A cab-visible leveling indicator shows brush angle/float position to the operator.

Suspension / float system

Uses a free-float suspension design that keeps the brush core in constant ground contact over uneven surfaces without separate support wheels, reducing wear on the bristle sections.

Bristle configuration options

Standard bristle fill is a 50/50 mix of replaceable polypropylene and steel-wire sections. Sections can be swapped to all-wire (heavier debris, ice/snow) or all-polypropylene (finer sweeping, less surface-abrasive) for job-specific applications.

Electrical control

Angle/rotation control on this size class runs on a 12V circuit matched to the carrier's electrical system; larger siblings in the same broom family are offered in a 24V version, but that is a separate model, not a BA22 configuration.

Water kit (dust suppression)

An optional water sprinkler kit is available to wet the sweeping path and knock down airborne dust, useful for mill yards, parking lots, and other dry-debris environments.

Storage / parking support

Factory parking supports let the broom stand upright and stable when detached from the carrier, without needing a stand improvised on site.

Motor guarding

Hydraulic drive motor is shielded/recessed against dust and debris ingestion while still being accessible for service without major disassembly.

All BA22 assemblies by section

Every catalogued assembly group for the Caterpillar BA22. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Electrical System

220-0464 Conversion Gp-Work Tool

10***05	Kit-Receptacle; (6-Pin)(Display Monitor Harness)	1
11***05	Grommet	1
15***74	Kit-Connecting Plug; (6-Pin)(Cat Electronic Display Harness)	1
15***58	Cover	1

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205-9410 Kit-Wiring

11***91	Fuse; (15-Ampere)	1
11***05	Grommet	1
15***95	Nut; (1-1/2-18-Thd)	1
15***96	Lockwasher	1

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173-2190 Wiring Gp-Work Tool

11***91	Fuse; (15-Ampere)	1
15***95	Nut; (1-1/2-18-Thd)	1
15***96	Lockwasher	1
17***90	Wiring Group-Work Tool	1

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Frame And Body

166-6695 Frame Gp-Broom

08***66	Locknut; (M8x1.25-Thd)	5
09***43	Screw-Drive; (M6x1-Thd)	6
13***17	Coupling	2
13***19	Carrier	2

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165-5508 Frame Gp-Broom

08***66	Locknut; (M8x1.25-Thd)	6
09***43	Screw-Drive; (M6x1-Thd)	12
13***17	Coupling	2
13***19	Carrier	2

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203-2600 Frame Gp-Broom

08***66	Locknut; (M8x1.25-Thd)	2
09***43	Screw-Drive; (M6x1-Thd)	8
13***16	Flange	4
13***17	Coupling	2

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175-2248 Indicator Gp-Height

08***66	Locknut; (M8x1.25-Thd)	1
17***17	Pendulum-Indicator	1
17***48	Indicator Group-Height	1
17***41	Spacer; (8x10x7-mm Thk)	1

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177-0151 Link Gp-Adjustable

17***49	Link	1
17***50	Pin-Lock	1
17***51	Link Group-Adjustable	1
6V***88	Nut-Self Locking; (M20x2.50 Thd)	1

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Hydraulic System

165-5498 Cylinder & Lines Gp-Broom

16***25	Orifice	1
16***39	Solenoid	2
16***98	Cylinder & Lines Group-Broom	1
20***94	Manifold Group-Control	1

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165-5497 Cylinder & Lines Gp-Broom

13***03	Solenoid	2
16***25	Orifice	1
16***97	Cylinder & Lines Group-Broom	1
20***95	Manifold-Control	1

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202-8990 Cylinder & Lines Gp-Broom

13***03	Solenoid	2
16***25	Orifice	1
20***95	Manifold-Control	1
20***97	Block-Manifold	1

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155-5022 Cylinder & Lines Gp-Broom

15***22	Cylinder & Lines Group-Broom	1
15***46	Hose As	1
16***25	Orifice	2
16***39	Solenoid	2

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205-5272 Cylinder Gp-Hydraulic

14***62	Link	1
14***63	Nut	1
20***72	Cylinder Group-Hydraulic	1
6V***88	Nut-Self Locking; (M20x2.50 Thd)	2

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200-0724 Kit-Quick Disconnect

20***24	Kit-Quick Disconnect	1
6V***08	Seal-With Adapter	2
6W***89	Fitting As; (Quick Disconnect, Female)	1
6W***91	Plug As	2

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200-0726 Kit-Quick Disconnect

15***17	Cap-Dust	1
19***25	Fitting As; (Quick Disconnect, Female)	1
19***26	Fitting As; (Quick Disconnect, Male)	1
19***78	Cap-Dust	1

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204-1259 Kit-Quick Disconnect

14***48	Fitting As; (Quick Disconnect, Male)	2
18***74	Cap-Dust	2
19***96	Adapter	2
20***59	Name-Plate (Lubrication), Kit-Quick Disconnect	1

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200-0725 Kit-Quick Disconnect

20***25	Kit-Quick Disconnect	1
6V***08	Seal-With Adapter	2
6W***88	Fitting As; (Quick Disconnect, Male)	2
6W***90	Cap As-Dust	2

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176-7287 Lines Gp-Connecting

17***84	Hose As	2
17***87	Lines Group-Connecting	1
17***99	Bulkhead As	2
20***90	Cap	2

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165-6027 Lines Gp-Connecting

13***28	Clamp; (Half)	4
15***48	Hose As	2
16***27	Lines Group-Connecting	1
17***05	Adapter As	2

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202-8991 Lines Gp-Connecting

20***91	Lines Group-Connecting	1
20***78	Plate; (Rh)	1
20***80	Plate; (Lh)	1
5K***90	Seal-To Hydraulic Cooler Inlet Port	4

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165-8982 Lines Gp-Hydraulic

13***28	Clamp; (Half)	4
16***82	Lines Group-Hydraulic	1
16***19	Hose As	2
18***97	Bracket	1

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Service Equipment And Supplies

166-3455 Film Gp

15***33	Film-Identification; (12-Volt)	1
15***35	Film-Warning; (Crush Hazard, Stay Back)	2
15***36	Film-Warning; (Read Operation Manual)	1
15***37	Film-Warning; (No Clrn, Flying Obj, Stay Back)	2

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202-8992 Film Gp

14***47	Film; (Identification) (24v) (On Outside Of Battery Compartment Door)	1
15***35	Film-Warning; (Crush Hazard, Stay Back)	2
15***36	Film-Warning; (Read Operation Manual)	1
15***37	Film-Warning; (No Clrn, Flying Obj, Stay Back)	2

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165-9817 Film Gp

14***47	Film; (Identification) (24v) (On Outside Of Battery Compartment Door)	1
15***33	Film-Identification; (12-Volt)	1
15***35	Film-Warning; (Crush Hazard, Stay Back)	2
15***36	Film-Warning; (Read Operation Manual)	1

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Work Tool Arrangement

164-8488 Broom Ar-Angle

14***60	Harness As-Work Tool	1
14***63	Diode	2
15***22	Cylinder & Lines Group-Broom	1
15***19	Bracket Group-Mounting	1

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164-8484 Broom Ar-Angle

14***60	Harness As-Work Tool	1
14***63	Diode	2
15***55	Connector	2
16***84	Broom Ar-Angle	1

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202-9000 Broom Ar-Angle

14***60	Harness As-Work Tool	1
14***63	Diode	2
15***55	Connector	2
20***89	Brush Group-Broom	1

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164-8486 Broom Ar-Angle

14***60	Harness As-Work Tool	1
15***55	Connector	2
16***86	Broom Ar-Angle	1
16***98	Cylinder & Lines Group-Broom	1

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157-5880 Broom Ar-Angle

14***60	Harness As-Work Tool	1
14***63	Diode	2
15***80	Broom Ar-Angle	1
15***55	Connector	2

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202-8999 Broom Ar-Angle

14***60	Harness As-Work Tool	1
15***55	Connector	2
20***89	Brush Group-Broom	1
20***90	Cylinder & Lines Group-Broom	1

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162-3973 Broom Ar-Angle

14***60	Harness As-Work Tool	1
14***63	Diode	2
15***22	Cylinder & Lines Group-Broom	1
15***23	Spray Group-Water	1

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164-8487 Broom Ar-Angle

14***60	Harness As-Work Tool	1
15***55	Connector	2
16***87	Broom Ar-Angle	1
16***98	Cylinder & Lines Group-Broom	1

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164-8485 Broom Ar-Angle

16***85	Broom Ar-Angle	1
16***04	Bracket Group-Mounting	1
16***08	Frame Group-Broom	1
16***27	Lines Group-Connecting	1

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202-7700 Broom Ar-Angle

17***51	Link Group-Adjustable	1
20***00	Broom Ar-Angle	1
20***89	Brush Group-Broom	1
20***91	Lines Group-Connecting	1

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202-7699 Broom Ar-Angle

14***60	Harness As-Work Tool	1
14***63	Diode	2
15***55	Connector	2
17***51	Link Group-Adjustable	1

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Work Tools

204-7494 Bracket Gp-Mounting

15***49	U-Bolt	8
20***94	Bracket Group-Mounting	1
20***95	Bracket As-Mounting	2
32***36	Locknut; (M12x1.75-Thd)	16

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204-7500 Bracket Gp-Mounting

15***49	U-Bolt	8
20***93	Bracket As-Mounting	2
20***00	Bracket Group-Mounting	1
32***36	Locknut; (M12x1.75-Thd)	16

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165-5504 Bracket Gp-Mounting

15***49	U-Bolt	8
15***80	Bracket As-Mounting; (Rh)	1
15***90	Bracket As-Mounting; (Lh)	1
16***04	Bracket Group-Mounting	1

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203-2599 Bracket Gp-Mounting

15***49	U-Bolt	8
20***99	Bracket Group-Mounting	1
32***36	Locknut; (M12x1.75-Thd)	16

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204-7497 Bracket Gp-Mounting

15***49	U-Bolt	8
20***97	Bracket Group-Mounting	1
20***98	Bracket As-Mounting	2
32***36	Locknut; (M12x1.75-Thd)	16

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204-7490 Bracket Gp-Mounting

15***49	U-Bolt	8
20***90	Bracket Group-Mounting	1
20***91	Bracket As-Mounting	2
32***36	Locknut; (M12x1.75-Thd)	16

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158-6319 Bracket Gp-Mounting

15***48	Bracket As-Mounting; (Rh)	1
15***49	U-Bolt	8
15***51	Bracket As-Mounting; (Lh)	1
15***19	Bracket Group-Mounting	1

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302-8213 Brush Gp-Broom

13***61	Spacer; (254x275x30-mm Thk)	48
20***57	Brush As; (Steel)	24
30***11	Brush-Polypropylene	25
30***13	Brush Group-Broom	1

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302-8212 Brush Gp-Broom

13***61	Spacer; (254x275x30-mm Thk)	54
20***57	Brush As; (Steel)	27
30***11	Brush-Polypropylene	28
30***12	Brush Group-Broom	1

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166-7226 Brush Gp-Broom

13***61	Spacer; (254x275x30-mm Thk)	50
15***52	Brush-Polypropylene	26
16***26	Brush Group-Broom	1
20***57	Brush As; (Steel)	25

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166-7227 Brush Gp-Broom

13***61	Spacer; (254x275x30-mm Thk)	56
15***52	Brush-Polypropylene	29
16***27	Brush Group-Broom	1
20***57	Brush As; (Steel)	28

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202-8989 Brush Gp-Broom

13***59	Bristle Group-Poly	34
13***60	Bristle Group-Steel	33
13***61	Spacer; (254x275x30-mm Thk)	66
20***89	Brush Group-Broom	1

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317-4371 Hook Gp-Coupler

15***49	U-Bolt	8
31***71	Hook Group-Coupler	1
31***08	Plate As-Coupler; (Lh)	1
31***09	Plate As-Coupler; (Rh)	1

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329-8631 Hook Gp-Coupler

15***49	U-Bolt	8
32***31	Hook Group-Coupler	1
32***32	Plate As-Coupler; (Rh)	1
32***33	Plate As-Coupler; (Lh)	1

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329-8634 Hook Gp-Coupler

15***49	U-Bolt	4
32***34	Hook Group-Coupler	1
32***35	Plate-Coupler	1
32***36	Locknut; (M12x1.75-Thd)	8

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155-5023 Spray Gp-Water

12***78	Locknut; (M6x1-Thd)	4
14***30	Tank As; (Water)	2
14***41	Adapter	1
14***42	Fitting-Hose	2

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165-9855 Spray Gp-Water

12***78	Locknut; (M6x1-Thd)	5
14***30	Tank As; (Water)	2
14***41	Adapter	1
14***42	Fitting-Hose	2

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165-5517 Spray Gp-Water

12***78	Locknut; (M6x1-Thd)	4
14***26	Pump Group-Auxiliary Water	1
14***30	Tank As; (Water)	3
14***39	Fitting-Hose	1

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203-2590 Spray Gp-Water

14***30	Tank As; (Water)	3
14***40	Adapter	1
14***41	Adapter	2
14***42	Fitting-Hose	4

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BA22 serial number reference

On angle-broom work tools the PIN/serial tag is a metal plate riveted to the main frame or mounting bracket, usually near the hydraulic hose connections or pivot point rather than on the broom head itself. Read the first three characters as the serial prefix (identifies the specific model and design series); the digits that follow are the sequence number of that individual unit built under the prefix.

Prefix	Identifies	Notes
8MZ	Hydraulic angle broom, direct-mount for wheel loaders/backhoe loaders (earlier generation)	Serial prefix 8MZ1-Up is the BA22-specific line in the parts manual grouping BA22/BA25 angle brooms with BP22/BP25 pick-up brooms; each model in that manual carries its own distinct prefix, none shared. No onboard engine; broom runs off the host machine's hydraulics through a 12V electric-over-hydraulic control valve.
PD51 / PD61 / PD71	Later-generation angling broom, shared BA22/BA25/BA30 parts manual	A newer parts manual covering BA22, BA25 and BA30 angling brooms together lists three serial-prefix ranges (PD51-Up, PD61-Up, PD71-Up) for the trio without breaking out which prefix belongs to which model. Treat as the BA22's current-generation prefix family but confirm the exact one against the full PIN with your dealer.

Frequently asked questions

What powers the Caterpillar BA22 broom?

The BA22 has no engine of its own. It runs off the host carrier's auxiliary hydraulic circuit through a gerotor motor needing roughly 40-75 L/min (11-20 gpm) at 150-260 bar (2176-3771 psi), while angling control runs on the carrier's 12V electrical system.

What does the Caterpillar BA22 weigh?

Operating weight is about 410 kg (903.9 lb). Sweeping width is 2200 mm (86.6 in) straight, narrowing to 1900 mm (74.8 in) when angled, with a 700 mm (27.6 in) brush diameter.

Is there a newer model that replaced the BA22?

No confirmed successor or discontinuation has surfaced. The BA22 appears to remain part of Cat's current angle-broom lineup alongside the BA18, BA25, BA30, and the hopper-equipped BP22/BP25 pickup brooms.

What BA22 owners discuss

What flow does the BA22's hydraulic motor actually need, and what happens if the carrier is undersized?

The BA22 runs off the host carrier's standard-flow auxiliary circuit rather than needing high-flow, and owners generally aim for the mid-teens to low-20s gpm range that gerotor-motor angle brooms are built around. Feed it too little flow and the brush core just spins weak and stalls in heavier material; feed it flow well above the motor's rating with no relief and you shorten shaft-seal life. Match the carrier's aux circuit spec to the broom's rated flow window before running it hard, and confirm actual case pressure with your dealer if the broom feels underpowered on a machine that should be adequate.

The gerotor motor is weeping oil at the shaft — is that a quick fix or a bigger problem?

Shaft-seal leakage is the single most common reason gerotor motors get pulled off angle brooms in the field, and it's a known wear point rather than a defect. These motors are typically run without an external case drain, which is fine at normal broom pressures, but any spike from a relief-valve issue, blocked return, or the operator holding the function against a stall shortens seal life fast. A light weep after long service is often just seal wear and gets addressed with a reseal; steady dripping or oil showing up on the bristle core points to a seal that's already gone and needs replacement before it contaminates the brush bearing.

Poly or wire bristles for the BA22, and how do owners tell when it's time to replace the core?

Field consensus mirrors what applies across the angle-broom category generally: poly sections flick loose material and are gentler on finished surfaces, wire sections cut through packed or crusted debris but are more aggressive, and a mixed poly/wire core is the common middle ground for mixed-surface work. Wear is judged by segment diameter — once the bristle wafers are down to roughly half their original outside diameter, sweeping pattern and ground contact suffer and it's time to swap them. Poly tends to fray visibly while wire just goes limp and stops cutting, so a visual check plus a hand-flex test on a sample section is the usual go/no-go call.

Broom won't angle left or right anymore — where do owners look first?

Before assuming the angle cylinder is bad, the common troubleshooting order is: confirm the carrier's aux circuit is actually activating (function works on other attachments), check that both angle-cylinder hoses are connected to the right ports and not blocked, then inspect the pivot/linkage pins and bushings for seizure or uneven wear. A frequent field fix is that the swivel/pivot pin nut was over-torqued at some point and the joint binds — backing it off and retorquing to spec frees it up. If the cylinder moves freely with the linkage disconnected but the broom still won't swing, the wear is in the pivot hardware, not the cylinder.

What wears on the mounting side where the BA22 attaches to the carrier?

As a heavier hydraulic attachment, the BA22 loads its quick-attach plate and coupler pins harder than a bucket does, especially with the added moment of the angling motion. Owners watch for elongated pin holes, a mount plate that rocks or rattles on the carrier's coupler even when locked, and bushings that have worn oval instead of round. Regular greasing at the coupler pins and pivot points slows this down; a loose-feeling mount or visible play when the broom is lifted and shaken is the tell that pins or bushings need replacing before they wear further into the plate itself.

The broom randomly stops responding to the 12V angle switch — is this a broom problem or a carrier problem?

Because the BA22's angle function and any accessory switching run on the carrier's 12V circuit rather than its own power source, most no-response complaints trace back to the connector at the attachment coupler — corrosion, a bent pin, or a loose ground there is far more common than a bad solenoid on the broom itself. The usual check order is: confirm voltage is present at the harness connector when the switch is engaged, check for a clean chassis ground rather than just a return through the harness, and only then suspect the coil itself. Intermittent faults that come and go with vibration almost always point to a marginal connector, not a failed component.

What should a buyer check on a used BA22 before paying for it?

Walk the bristle core first and measure remaining wafer diameter against a new-condition reference — heavily worn or unevenly worn segments are an easy negotiating point and a known consumable. Cycle the angle function fully both directions and watch for hesitation, binding, or uneven speed, which flags worn pivot pins or a tired cylinder rather than a hydraulic supply issue. Check the gerotor motor case and shaft area for oil residue or fresh wetness, and check the mount plate and coupler pins for play with the broom raised and the machine off. Confirm the leveling indicator still shows true and that parking supports are intact and not bent from being dragged. Have your dealer verify hydraulic motor case pressure and confirm no history of running the broom against a stall before you rely on it for daily use.

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

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