Caterpillar BR160
Maintenance schedule, common problems & OEM parts breakdown
The Cat BR160 is a passive, hydraulically driven rotary brush cutter, a work tool attachment rather than a self-powered machine. It couples to Cat skid-steer, compact track, and multi-terrain loaders in the standard-flow carrier class, drawing 57-65 L/min at roughly 150-230 bar from the carrier's own hydraulic system. Cutting width is 1524 mm (60 in), rated for material up to about 76 mm (3 in) in diameter, and unit weight runs approximately 431 kg (950 lb). It has no onboard engine, ECM, fuel tank, coolant system, or dedicated hydraulic reservoir; the only serviced compartment is a sealed gearbox reducer between the hydraulic motor and blade carrier, filled and checked through a level plug rather than a measured-volume dipstick. Configuration is largely fixed for this size class, with the main variable being which carrier coupler and hose kit it ships with. It carries a single documented serial prefix, SDB, with no generational split recorded.
The BR160 sits at the small end of Cat's standard-flow brush cutter line alongside larger standard-flow siblings, which scale up cutting width and blade-carrier capacity while keeping the same standard-flow hydraulic and coupler requirements. The high-flow XPS siblings use different hydraulics and mounting, so parts and hose kits do not cross over. Because the BR160 has no engine or ECM, its condition in the used and parts market turns on wear-component status rather than hour-based depreciation: gearbox oil condition, blade and spindle bearing play, mount-plate and coupler wear, and guarding condition tell a buyer more than a service history built around fluid changes. Its simple driveline design keeps it in steady circulation on the used attachment market, and replacement blades, skid shoes, and gearbox seals account for most of the ongoing parts demand.
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 BR160 specifications
Engine
| Power source | Not applicable. BR160 is a passive hydraulic work tool with no onboard engine or ECM; it is driven entirely by the carrier machine's hydraulic system. |
| Emissions tier | Not applicable — no engine fitted to the attachment. |
Weights
| Unit weight | 431 kg (950 lb) |
| Shipping weight | Not separately published; dealer literature carries the same 431 kg (950 lb) figure as the unit weight. |
| Ground pressure | Not applicable — attachment mounts to the carrier's quick-coupler and has no ground contact of its own. |
Dimensions
| Overall width | 1575 mm (62 in) |
| Overall length | 1854 mm (73 in) |
| Overall height | 533 mm (21 in) |
| Cutting width | 1524 mm (60 in) |
| Maximum cutting diameter | 76 mm (3 in) |
Performance
| Required hydraulic flow | 57–65 L/min (15–17 gpm), standard-flow circuit |
| Hydraulic operating pressure | 150–230 bar (2176–3340 psi) |
| Blade tip speed | 3987–5596 m/min (13,080–18,360 ft/min) |
| Carrier compatibility | Cat skid steer, compact track and multi-terrain loaders running standard-flow hydraulics; compatible carrier class varies by series and region — confirm current fit with your dealer. |
| Safety features | Integrated hydraulic brake on the cutter head and a safety lift-height restriction; joystick-ready control |
Service capacities (summary)
| Gearbox oil | Capacity and fluid grade not published as a fixed volume in available dealer literature. Change interval is every 500 service hours or annually, whichever comes first — verify exact fill spec with your dealer. |
| Hydraulic system | No separate reservoir on the attachment; hydraulic oil is supplied and conditioned by the carrier machine's own system. |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
BR160 fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Gear case (sealed speed-reduction gearbox, motor-to-blade-carrier drive) | not published as a fixed volume - service is done by filling to the level-check plug hole, not by a measured quantity | SAE 85W-140 gear oil, API GL-5 duty; a single wide-range grade, no separate summer/winter viscosity split is given for this attachment |
| Hydraulic system | not applicable - BR160 has no onboard hydraulic tank or reservoir; it draws flow and pressure directly from the host skid steer, compact track loader, or multi-terrain loader (57-65 L/min at 150-230 bar for this model) | use whatever hydraulic oil the host carrier's own operation and maintenance manual specifies; there is no BR160-specific hydraulic fluid |
| Engine, fuel tank, cooling system | not applicable | BR160 is a passive hydraulically driven work tool with no engine, so it has no crankcase, fuel tank, or cooling system of its own |
| Grease points | not applicable / not separately documented | no dedicated external grease fittings are called out for this model in the available service literature; the gearbox is a sealed, oil-lubricated unit rather than a grease-serviced one |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar BR160 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the BR160 beyond the schedule
Predictive Maintenance & Fluid Analysis
The BR160's only lubricant is the gearbox oil in the motor-to-blade-carrier reducer. Pull samples at scheduled changes and send for analysis: watch for metal fines signaling gear or bearing wear, and for water contamination pointing to a failed shaft seal. Track the carrier's hydraulic fluid condition too, since flow and pressure swings from a worn carrier pump transmit added stress into the cutter's motor and gearbox. Log blade balance and spindle bearing play at each interval to catch fatigue trends before a gearbox failure.
Corrective & Common Repairs
Most BR160 repairs center on wear parts: blades, skid shoes, and mount-plate bushings absorb the brunt of ground contact and coupling cycles. Bent or cracked blades unbalance the carrier and accelerate spindle bearing wear, so replace blades as a matched set, never singly. Leaking hydraulic motor shaft seals and worn quick-disconnect couplers are the next most common failures, both tied to debris ingestion and hose abrasion. Chain-curtain guarding shreds first in heavy brush and should be replaced promptly to protect the operator.
Overhaul & Rebuild Points
A full BR160 rebuild centers on the sealed gearbox: replace bearings, shaft seals, and gears once oil analysis or backlash checks show internal wear, since this reducer carries all torque from the carrier's hydraulic motor to the blade carrier. Rebuild the hydraulic drive motor if speed or torque output has dropped. Inspect the deck and blade-carrier housing for fatigue cracking at high-impact weld points from repeated tree and brush strikes, and resurface or replace the mount plate once coupler wear affects carrier lockup.
Seasonal & Environment Servicing
Heavy summer brush-clearing loads the gearbox and blade carrier hardest, so tighten oil-analysis intervals during peak cutting season. In cold climates, let the carrier's hydraulic oil reach operating temperature before running the cutter at full flow, since cold, thick fluid strains the motor and coupler. After wet-season use, clear packed vegetation and mud from the deck and chain curtain to prevent corrosion at the gearbox seals and mount-plate fasteners, and store the attachment with the blade carrier supported off the ground.
BR160 fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| 1009 | Hydraulic oil temperature above normal | Low hydraulic oil level, plugged oil cooler fins, a failing cooler fan drive, or sustained high-load running of a hydraulic attachment such as a rotary cutter beyond the carrier's rated flow duty cycle. | Idle down and let the attachment disengage, check hydraulic oil level and cooler fins for debris, confirm cooler fan operation, then resume light duty and monitor temperature before returning to full cutting load. |
| 1004 | Hydraulic oil filter restricted | Dirty or clogged hydraulic return filter element, often accelerated by extended high-flow duty running a rotary cutter or other continuous-demand work tool. | Check the filter restriction indicator, replace the hydraulic filter element, and inspect oil condition for contamination before continuing attachment operation. |
| 4043 | Hydraulic oil temperature sensor shorted to ground | Damaged temperature sensor at the hydraulic tank or chafed/pinched harness wiring shorting the signal to ground. | Inspect the sensor connector and harness routing for damage, test sensor resistance against spec, and replace the sensor or repair the harness as needed. |
| 4044 | Hydraulic oil temperature sensor open circuit | Broken wire, corroded terminal, or an unplugged connector at the hydraulic oil temperature sensor. | Verify the connector is fully seated, check continuity through the harness, and repair or replace the sensor or wiring as required. |
| 1205 | Hydraulic enable output shorted to power (electro-hydraulic machines) | Short circuit in the wiring that energizes the hydraulic-enable relay or solenoid controlling auxiliary flow to the attached work tool. | Inspect the hydraulic enable circuit wiring and relay for a short to a power source, repair the fault, clear the code, and retest before re-enabling auxiliary flow to the cutter. |
| 1350 | Hydraulic enable switch in an implausible state, hardware versus software mismatch | Sticky or intermittent enable/auxiliary hydraulics switch, or a wiring fault causing the controller's expected switch position to disagree with the actual reading. | Cycle the enable switch, inspect the switch contacts and harness for intermittent connection, and replace the switch if the disagreement persists. |
| 5507 | Auxiliary valve spool position sensor open or shorted to ground | Damaged position sensor on the auxiliary (attachment) control valve spool, or broken/shorted sensor wiring. | Inspect and test the auxiliary spool position sensor and its connector, repair the harness, or replace the sensor if it fails the resistance check. |
| 5513 | Implausible auxiliary sensor state versus auxiliary command, stuck spool or pressure relief valve suspected | Auxiliary control valve spool mechanically stuck from contamination, or a pressure relief valve issue preventing commanded hydraulic flow from reaching the attachment, which shows up as a cutter that will not spin despite the auxiliary control being engaged. | Check the auxiliary valve spool for sticking or contamination, verify pressure relief valve setting, and clean or service the valve before resuming attachment use. |
| 5601 | Loader auxiliary directional valve solenoid(s) shorted to power | Internally shorted auxiliary directional solenoid or chafed wiring energizing the coil unexpectedly. | Test solenoid coil resistance, inspect wiring for chafe points near the valve body, and replace the solenoid if it fails the short-to-power check. |
| 9156 | Hydraulic enable button error reported from the machine's interface control module | Faulty auxiliary hydraulics enable rocker switch or a wiring fault between the switch and its interface control module. | Test the enable switch operation and continuity, inspect the wiring to the interface control module, and replace the switch if it does not respond correctly. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
BR160 attachments & work tools
Carrier / mounting system
BR160 is itself a work tool, not a host machine: a 60 in (1524 mm) rotary brushcutter head that mounts on the standard Cat skid steer quick coupler (opposing-edge wedge lock), fitted to skid steer loaders, compact track loaders, and multi terrain loaders. It runs on the carrier's standard-flow auxiliary hydraulic circuit and is joystick-ready, no separate control valve kit needed.
Carrier model fit (frame class)
Compatible carrier lists vary by loader series/generation - small-frame Cat skid steers and CTL/MTL models in roughly the 1.5-2.5 ton operating class are cited across different dealer eras. Confirm exact carrier fit against the current model-year fit guide; do not assume cross-generation interchangeability.
Hydraulic flow requirement
Standard-flow circuit only: cited flow range is about 57-65 L/min (15-17 gpm) for BR160, rising somewhat higher across the standard-flow siblings. It is not rated for high-flow (XPS) circuits - the larger siblings in the same family are the high-flow-only models and their hydraulic kits are not interchangeable with BR160.
Blade / cutting head
Rotary carrier with multiple high-strength blades on a balanced, tapered carrier plate that mulches brush and rides up over stumps and rocks instead of catching. Rated for brush and saplings up to about 76 mm (3 in) diameter. Replacement blades are a routine wear item, sold individually rather than as a kit.
Debris guarding
Galvanized coil-chain curtains hang across the front and rear of the deck to contain thrown debris. Hinged, removable guard panels shield the hydraulic motor and drive gearbox from impact and debris ingestion during cutting.
Skid shoes / ground contact
Heavy-duty skid shoes under the deck let the cutter glide over uneven ground and stumps while holding the head at a consistent cutting height; they are the main wear/adjustment point for deck height rather than a bolt-on option.
Safety / control features
Built-in hydraulic brake stops blade rotation quickly when the carrier's aux hydraulics are released, paired with a safety lift restriction that limits raising the cutter head while the blade is still spinning. No separate guarding kit is needed beyond the standard chain curtains and motor guard.
All BR160 assemblies by section
Every catalogued assembly group for the Caterpillar BR160. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Frame And Body
264-9010 Frame Gp-Brush Cutter -78-In
| 16***20 | Link-Chain | 2 |
| 26***10 | Frame Group-Brush Cutter; -78-In | 1 |
| 26***11 | Frame As | 1 |
264-9510 Frame Gp-Brush Cutter -66-In
| 16***20 | Link-Chain | 2 |
| 26***10 | Frame Group-Brush Cutter; -66-In | 1 |
| 26***11 | Frame As | 1 |
264-9310 Frame Gp-Brush Cutter -72-In, High Flow
| 16***20 | Link-Chain | 2 |
| 26***10 | Frame Group-Brush Cutter; -72-In, High Flow | 1 |
| 26***11 | Frame As | 1 |
264-9410 Frame Gp-Brush Cutter -60-In
| 16***20 | Link-Chain | 2 |
| 26***10 | Frame Group-Brush Cutter; -60-In | 1 |
| 26***11 | Frame As | 1 |
Hydraulic System
264-9540 Lines Gp-Connecting -66-In
| 14***22 | Adapter; (-10orb/-12orfs) | 4 |
| 15***94 | Coupler As-Quick Disconnect; (Female)(Quick Disconnect) | 1 |
| 15***95 | Fitting As; (Quick Disconnect, Male) | 1 |
264-9040 Lines Gp-Connecting -78-In
| 14***48 | Fitting As; (Quick Disconnect, Male) | 1 |
| 14***49 | Fitting As; (Quick Disconnect, Female) | 1 |
| 14***27 | Connector Group | 4 |
264-9240 Lines Gp-Connecting -72-In, High Flow
| 14***48 | Fitting As; (Quick Disconnect, Male) | 1 |
| 14***49 | Fitting As; (Quick Disconnect, Female) | 1 |
| 14***22 | Adapter; (-10orb/-12orfs) | 2 |
264-9033 Manifold Gp-Control
| 14***88 | Kit-Seal; (Ride Control, Switch) | 1 |
| 26***33 | Manifold Group-Control | 1 |
| 26***34 | Valve-Relief | 1 |
Service Equipment And Supplies
264-9598 Plate & Film Gp -66-In
| 12***56 | Film; (Warning) (No Step) (On Top Of Hood Behind Cab On Each Side) (On Each Fender Flare) | 3 |
| 15***36 | Film-Warning; (Read Operation Manual) | 1 |
| 15***41 | Film-Warning; (Cutter Hazard, Stay Back) | 1 |
264-9398 Plate & Film Gp -72-In
| 12***56 | Film; (Warning) (No Step) (On Top Of Hood Behind Cab On Each Side) (On Each Fender Flare) | 3 |
| 15***36 | Film-Warning; (Read Operation Manual) | 1 |
| 15***41 | Film-Warning; (Cutter Hazard, Stay Back) | 1 |
264-9498 Plate & Film Gp -60-In
| 12***56 | Film; (Warning) (No Step) (On Top Of Hood Behind Cab On Each Side) (On Each Fender Flare) | 3 |
| 15***36 | Film-Warning; (Read Operation Manual) | 1 |
| 15***41 | Film-Warning; (Cutter Hazard, Stay Back) | 1 |
264-9098 Plate & Film Gp -78-In
| 12***56 | Film; (Warning) (No Step) (On Top Of Hood Behind Cab On Each Side) (On Each Fender Flare) | 3 |
| 15***36 | Film-Warning; (Read Operation Manual) | 1 |
| 15***41 | Film-Warning; (Cutter Hazard, Stay Back) | 1 |
264-9298 Plate & Film Gp -72-In, High Flow
| 12***56 | Film; (Warning) (No Step) (On Top Of Hood Behind Cab On Each Side) (On Each Fender Flare) | 3 |
| 15***36 | Film-Warning; (Read Operation Manual) | 1 |
| 15***41 | Film-Warning; (Cutter Hazard, Stay Back) | 1 |
Work Tool Arrangement
264-9300 Brush Cutter Ar -72-In, High Flow
| 26***40 | Lines Group-Connecting; -72-In, High Flow | 1 |
| 26***98 | Plate & Film Group; -72-In, High Flow | 1 |
| 26***00 | Brush Cutter Ar; -72-In, High Flow | 1 |
264-9600 Brush Cutter Ar -66-In
| 26***10 | Frame Group-Brush Cutter; -66-In | 1 |
| 26***40 | Lines Group-Connecting; -66-In | 1 |
| 26***50 | Drive Group-Brush Cutter | 1 |
264-9500 Brush Cutter Ar -60-In
| 26***10 | Frame Group-Brush Cutter; -60-In | 1 |
| 26***50 | Drive Group-Brush Cutter; -60-In | 1 |
| 26***98 | Plate & Film Group; -60-In | 1 |
264-9100 Brush Cutter Ar -78-In, Xps
| 26***10 | Frame Group-Brush Cutter; -78-In | 1 |
| 26***40 | Lines Group-Connecting; -78-In | 1 |
| 26***50 | Drive Group-Brush Cutter; -78-In | 1 |
264-9400 Brush Cutter Ar -72-In
| 26***10 | Frame Group-Brush Cutter; -72-In, High Flow | 1 |
| 26***50 | Drive Group-Brush Cutter; -72-In, High Flow | 1 |
| 26***98 | Plate & Film Group; -72-In | 1 |
Work Tools
264-9550 Drive Gp-Brush Cutter
| 26***50 | Drive Group-Brush Cutter | 1 |
| 26***51 | Blade Set | 1 |
| 26***54 | Coupling | 1 |
264-9450 Drive Gp-Brush Cutter -60-In
| 26***50 | Drive Group-Brush Cutter; -60-In | 1 |
| 26***51 | Blade | 1 |
| 26***52 | Pin | 2 |
264-9350 Drive Gp-Brush Cutter -72-In, High Flow
| 26***50 | Drive Group-Brush Cutter; -72-In, High Flow | 1 |
| 26***51 | Blade; (Includes 2-Blades) | 1 |
| 26***54 | Coupling | 1 |
264-9050 Drive Gp-Brush Cutter -78-In
| 17***95 | Bolt-Socket Head; (3/8-16x3.5-In) | 8 |
| 26***33 | Manifold Group-Control | 1 |
| 26***50 | Drive Group-Brush Cutter; -78-In | 1 |
264-9560 Gearbox Gp -Speed Increaser
| 26***60 | Gearbox Group; -Speed Increaser | 1 |
| 26***61 | Seal-Shaft | 1 |
| 26***62 | Seal-Shaft | 1 |
BR160 serial number reference
The PIN plate is a riveted or stamped metal tag mounted on the brush cutter's frame or mount plate, usually near the coupler end or gearbox housing. Read the first three letters as the prefix (identifies the model/serial break) followed by the sequential unit number; on pre-2001 tags it may show a shorter serial break code, on current-format tags it's embedded in the full 17-character PIN.
| Prefix | Identifies | Notes |
|---|---|---|
| SDB | BR160 brush cutter attachment, 1524 mm (60 in) cutting width | Standard-flow hydraulic-drive brush cutter for Cat skid steer, compact track, and multi-terrain loaders; no onboard engine, powered off the carrier's hydraulics. Only documented serial prefix for this model; sibling attachments in the same parts-book family carry their own distinct prefixes, not applicable to BR160 itself. No plant/region or production-year breakout documented; confirm exact build year with your dealer using the full PIN. |
Frequently asked questions
Does the Cat BR160 have its own engine?
No. The BR160 is a passive attachment with no onboard engine, ECM, fuel system, or cooling system. It runs entirely on hydraulic flow supplied by the host carrier, drawing about 57-65 L/min at up to roughly 150-230 bar depending on the carrier's standard-flow hydraulic circuit.
How much does the Cat BR160 weigh, and what is its operating weight range?
The BR160 weighs approximately 431 kg (950 lb) as a bare attachment, with a 1524 mm (60 in) cutting width, sized for standard-flow carriers. It has no operating weight of its own beyond this unit weight since it carries no fluids or ballast.
What replaced the Cat BR160, and what carriers is it compatible with?
No documented successor exists for the BR160; it remains part of Cat's standard-flow brush cutter lineup alongside larger standard-flow siblings. For higher-capacity cutting, Cat offers high-flow/XPS brush cutters, but those run different hydraulics with different mounting, so they are not drop-in replacements on a BR160-equipped carrier.
What BR160 owners discuss
How much does hydraulic flow matching matter for the BR160, and what happens if it's wrong?
How much play in the blade carrier is normal before it's a real problem?
Gearbox oil on the BR160, what should owners actually be watching for?
Blades keep coming back worn or vibrating, what's the right way to handle it?
Are there guarding or curtain components that wear out faster than expected?
Hoses, couplers and the mounting plate, what fails first in real use?
Are there electrical or sensor quirks associated with running these attachments?
What should you check before buying a used BR160?
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Need a specific BR160 part?
Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.