Caterpillarwork toolrake-power box

Caterpillar PR172

Maintenance schedule, common problems & OEM parts breakdown

Search live PR172 parts

The PR172 Power Box Rake is a passive, ground-engaging work tool built for skid-steer and multi-terrain loaders, compact wheel loaders, and mini excavators fitted with a universal-style quick coupler. It carries a 72 in (1829 mm) rotor/roller width and comes in two configurations: Manual Angle, at 899.5 lb (408 kg), where the operator resets the 20-degree left/right angle by hand at a pin-and-detent frame, and Hydraulic Angle, at 925.9 lb (420 kg), where the same 20-degree swing is set from the cab through a dedicated angle cylinder. It sits mid-width in Cat's power box rake lineup, which spans narrower PR121/PR123 rakes up through the wider PR184 and PR190, rather than replacing or being replaced by a single predecessor or successor model; Cat offers it alongside those siblings as a width option within one family.

Across the two PR172 configurations, the core rotor, tine set, and hydraulic-motor drive are unchanged; the only functional difference is how the angle is set, and that adds roughly 26 lb (12 kg) of cylinder, hose, and valving mass on the hydraulic version. Because the attachment carries no engine, ECM, or fluid reservoir of its own, its condition rides entirely on wear items that carry over cleanly between owners: tines, roller bearings, the hydraulic motor and hoses, gauge wheel spindles, and the coupler wedge. That makes the used and parts market for the PR172 straightforward to evaluate: a rake with sound bearings, tight tines, and leak-free hoses is functionally equivalent to a newer unit regardless of hours, since there is no aftertreatment, ECM fault history, or engine wear to discount for. That keeps well-maintained used units and remanufactured wear components in steady demand across the skid-steer and CTL attachment market.

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 PR172 specifications

Engine

Power sourceNo onboard engine. Rotor is driven hydraulically off the carrier machine's auxiliary (standard-flow) hydraulic circuit
Displacement / cylindersNot applicable - passive ground-engaging work tool, no powerplant of its own
Emissions tierNot applicable - no engine fitted to the tool

Weights

Weight, Manual Angle configuration408 kg (899.5 lb)
Weight, Hydraulic Angle configuration420 kg (925.9 lb)
Ground pressureNot published for this work tool

Dimensions

Roller / raking width1829 mm (72 in)
Raking width at maximum angle1727 mm (68 in)
Overall width2057 mm (81 in)
Overall length1626 mm (64 in)
Overall height847 mm (33.3 in)
Maximum angle, left or right of center20 degrees (both Manual Angle and Hydraulic Angle versions)

Performance

Required hydraulic flow49-86 L/min (13-23 gpm), standard-flow carrier circuit
Required hydraulic pressure230 bar (3336 psi)
Angle controlManual Angle version set by hand; Hydraulic Angle version adjusted from the operator's seat, both up to 20 degrees left or right of center
Gauge wheelsDual, independently adjustable gauge wheels set skim-pass depth or drainage grade
Travel speed / gradeabilityNot applicable - passive attachment with no self-propulsion; performance follows the carrier machine

Service capacities (summary)

Fuel tankNot applicable - no onboard engine
Hydraulic systemNo dedicated onboard reservoir; the rake runs off the carrier machine's hydraulic system
Engine oilNot applicable - no onboard engine
Cooling systemNot applicable - no onboard engine

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

PR172 fluids & capacities

SystemCapacityRecommended fluid
Hydraulic system (attachment supply, no onboard reservoir)No dedicated tank on the rake itself. Runs on the host carrier's auxiliary hydraulic circuit at an optimal flow of 49-86 L/min (13-23 US gpm) and system pressure of 230 bar (3336 psi), standard-flow auxiliary hydraulics.No independent fluid fill for the work tool. Oil comes from the host machine's own hydraulic tank, so the applicable spec is whatever the carrier calls for, typically Cat HYDO Advanced 10W or Cat TDTO (TO-4) on machines that share hydraulic and powertrain oil. Viscosity-by-climate selection follows the host machine's own chart, not a PR172-specific one.
Grease points (pivots, bearings, rotor/angle-frame linkage)Spec only, no fill volume published; serviced by zerk fitting per the routine lubrication interval.Cat Multipurpose Grease for general-duty bearing and pivot points; Cat Advanced 3Moly Grease where extreme-pressure/high-load duty is called for. No separate cold-weather/hot-weather grease split is published for this attachment.
Engine, cooling, fuel, transmission, final drive, axleNot applicable.The PR172 carries no engine, coolant, fuel tank, transmission, final drive, or axle of its own. It is a passive, hydraulically driven power box rake (angle rake) mounted to a host carrier, drawing rotary power entirely from the carrier's hydraulic motor circuit. All engine/coolant/fuel/driveline fluid specs belong to the host machine, not the work tool.

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

Caterpillar PR172 maintenance schedule

Service intervalTasks
Every 50 h
  • Wipe down and visually inspect the rotor bar, tines, and roller housing for packed debris, cracks, or missing tines before each use
  • Grease all zerks on the mount frame, angle pivot, and (hydraulic-angle units) angle cylinder pins per the decal-listed schedule
  • Check hydraulic hoses and quick-connect couplers for leaks, kinks, or abrasion at the motor and cylinder
  • Confirm dual gauge wheels turn freely and hold their set height
  • Check the quick-coupler wedge and lock pins seat fully and show no play against the carrier
  • On hydraulic-angle units, cycle the angle function through full left/right travel and check for smooth, even motion
Every 250 h
  • Inspect the hydraulic motor case and shaft seal for weeping or leaks
  • Check rotor bearing play by hand-rocking the tine bar at both ends
  • Re-torque mounting bracket and coupler plate bolts to spec
  • Inspect tines for bending, cracking, or excess wear and replace as a set if wear is uneven
  • Check angle-mechanism pivot bushings for play (manual-angle pin/detent frame or hydraulic-angle cylinder rod-end)
  • Confirm the carrier delivers flow within the 49-86 L/min (13-23 US gpm) window under load
Every 500 h
  • Pull a hydraulic oil sample from the carrier circuit feeding the rake and check for metal fines or moisture
  • Inspect gauge wheel spindles and adjustment hardware for wear; regrease or replace bushings
  • Check the roller drive coupling and shaft for radial play beyond the wear limit
  • Inspect the coupler wedge and carrier mounting faces for elongation or cracking
  • Check hydraulic hose routing and clamps for chafe points caused by full-angle travel
Every 1,000 h
  • Remove and inspect the hydraulic motor internally for spline, gear, or seal wear; rebuild or exchange as needed
  • Replace rotor bearings and shaft seals as a set once play is confirmed
  • Inspect the tine bar and tine mounting hardware for fatigue cracking; replace the tine set if wear limits are exceeded
  • Inspect main frame welds, especially at the coupler plate and angle-pivot brackets, for cracking
  • Rebuild or replace the angle cylinder on hydraulic-angle units if seal leakage or rod scoring is present
Every 2,000 h
  • Full teardown and rebuild of the angle mechanism, including all pivot bushings and pins, on both manual- and hydraulic-angle frames
  • Replace or overhaul the hydraulic motor regardless of visible symptoms, given cumulative internal wear at this service life
  • Replace the tine bar assembly and roller bearings as a complete set
  • Perform non-destructive inspection of the main frame and coupler plate for fatigue cracking; repair or retire the frame if cracks are found
  • Replace all hydraulic hoses on the attachment as a preventive set regardless of visual condition

Servicing the PR172 beyond the schedule

Predictive Maintenance & Fluid Analysis

The PR172 has no engine, ECM, or reservoir of its own, so predictive care tracks the host carrier's hydraulic circuit instead. Sample carrier hydraulic oil on schedule and watch for metal fines, which flag internal wear in the rake's motor before roller speed drops off. Compare delivered flow against the 49-86 L/min (13-23 US gpm) window at 230 bar (3336 psi); a fall-off under load signals a worn motor or fatigued relief valve. On hydraulic-angle units, log cylinder drift and grease uptake at each zerk to catch bearing wear early.

Corrective & Common Repairs

Most PR172 repairs are wear-item swaps, not warranty claims. Bent or chipped tines on the rotor bar are the most common field fix, followed by roller bearing replacement once play develops at the shaft ends. Hydraulic hose and fitting leaks around the motor and, on hydraulic-angle units, the angling cylinder are the next most frequent callouts. Gauge wheels loosen with use and need periodic re-adjustment or bushing replacement. On manual-angle units, the pin-and-detent angling frame wears at the pivot and needs bushing renewal to hold set angle under load.

Overhaul & Rebuild Points

Major PR172 rebuild work centers on the hydraulic motor and the rotor assembly. Once the motor shows case-drain contamination or output loss beyond hose and fitting causes, exchange or reseal it rather than chase symptoms downstream. Rotor bearings and shaft seals need replacement together once radial play exceeds limit, since the tine bar rides there. Angle-mechanism pivots and bushings on manual and hydraulic-angle frames wear as a set and should be renewed together. Check the main frame and coupler plate for cracked welds before returning the unit to service.

Seasonal & Environment Servicing

The PR172 works turf and seedbed prep, so off-season handling matters as much as in-season checks. Before winter storage, wash organic debris and soil out of the rotor housing and tine bar; packed material holds moisture against bearings and accelerates corrosion. Coat exposed cylinder rods and the coupler wedge with a grease film before layup. In wet or sandy turf, shorten the tine and bearing wear-check interval, since fine grit wears seals faster than on gravel or general construction sites. Re-grease and recheck angle-mechanism free play before spring startup.

PR172 attachments & work tools

Machine type and size-class family

PR172 is itself a Cat power box rake work tool, not a host carrier. It sits in a size family that spans roughly PR121 up through PR184 and PR190, with roller widths climbing from about 1.5 m up to 2.3 m (72 in on the PR172 itself, 1829 mm).

Roller/raking width

PR172 roller width is 1829 mm (72 in), overall width 2057 mm (81 in). At full 20-degree angle the effective raking width narrows to about 1727 mm (68 in). Sibling PR184 and PR190 step up to 2134 mm and 2286 mm roller widths respectively - treat those as a wider/heavier option tier, not this exact model.

Angling configuration

Offered in two variants: manual-angle (pin-adjusted, set from outside the machine) and hydraulic-angle (adjusted from the cab via an auxiliary hydraulic circuit). Both variants swing up to 20 degrees left or right of center for windrowing loosened material to one side.

Coupler / mounting system

Mounts via the universal skid-steer/multi-terrain-loader quick-coupler plate, described by the factory as an opposing-edge design that clamps the tool frame securely for fast tool changes. This is the standard loader quick-attach interface, not an excavator pin-grab coupler.

Hydraulic drive requirement

The rotor is hydraulically driven off the carrier's standard-flow auxiliary circuit; no high-flow kit is required. Optimal flow runs about 49-86 L/min (13-23 gpm) at roughly 230 bar (about 3336 psi) working pressure - varies slightly by dealer listing but stays in this band across sources.

Depth and finish-control options

Factory options include dual independently adjustable gauge wheels for skim passes (over-seeding or fine grade control) and adjustable skid shoes with multiple set positions for consistent working depth. These are the main configuration choices beyond the angle-drive selection.

Host-carrier compatibility

Rated for skid-steer and multi-terrain loaders across a wide weight range (small-frame through large-frame D-series/M-series units) and for compact wheel loaders in the same power class. Exact compatible-model lists vary by dealer catalog revision; match by hydraulic flow rating and coupler type rather than model number alone.

All PR172 assemblies by section

Every catalogued assembly group for the Caterpillar PR172. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Frame And Body
276-4408 Deflector Gp-Debris
03***55Locknut; (5/16-18-Thd)(Marked X)16
1D***72Bolt-Carriage; (1/2-13x5.5-In)16
27***08Deflector Group-Debris1
See all parts with full part numbers in Heavy Parts AI →
276-4428 Deflector Gp-Debris
03***55Locknut; (5/16-18-Thd)(Marked X)24
1D***72Bolt-Carriage; (1/2-13x5.5-In)24
27***28Deflector Group-Debris1
See all parts with full part numbers in Heavy Parts AI →
276-4418 Deflector Gp-Debris
03***55Locknut; (5/16-18-Thd)(Marked X)24
1D***72Bolt-Carriage; (1/2-13x5.5-In)24
27***18Deflector Group-Debris1
See all parts with full part numbers in Heavy Parts AI →
277-8211 Frame Gp-Landscape Rake
02***87Fitting-Grease; (Universal Joint)4
0T***84Bolt 19 mm(.75 In.) Long3
27***70Bushing1
See all parts with full part numbers in Heavy Parts AI →
276-4406 Frame Gp-Landscape Rake
15***70Lockwasher1
27***06Frame Group-Landscape Rake1
27***08Deflector Group-Debris1
See all parts with full part numbers in Heavy Parts AI →
276-4410 Frame Gp-Landscape Rake
02***87Fitting-Grease; (Universal Joint)4
0T***84Bolt 19 mm(.75 In.) Long3
27***10Frame Group-Landscape Rake1
See all parts with full part numbers in Heavy Parts AI →
276-4430 Frame Gp-Landscape Rake
02***87Fitting-Grease; (Universal Joint)4
0T***84Bolt 19 mm(.75 In.) Long3
27***30Frame Group-Landscape Rake1
See all parts with full part numbers in Heavy Parts AI →
276-4426 Frame Gp-Landscape Rake
15***70Lockwasher2
27***26Frame Group-Landscape Rake1
27***28Deflector Group-Debris1
See all parts with full part numbers in Heavy Parts AI →
276-4416 Frame Gp-Landscape Rake
15***70Lockwasher1
27***09Wheel Group-Landscape Rake2
27***16Frame Group-Landscape Rake1
See all parts with full part numbers in Heavy Parts AI →
277-8221 Frame Gp-Landscape Rake
02***87Fitting-Grease; (Universal Joint)4
0T***84Bolt 19 mm(.75 In.) Long3
27***70Bushing1
See all parts with full part numbers in Heavy Parts AI →
276-4429 Wheel Gp-Landscape Rake
02***87Fitting-Grease; (Universal Joint)1
0S***79Bolt 5.08 cm(2 In.) Long1
27***29Wheel Group-Landscape Rake1
See all parts with full part numbers in Heavy Parts AI →
276-4409 Wheel Gp-Landscape Rake
02***87Fitting-Grease; (Universal Joint)1
0S***79Bolt 5.08 cm(2 In.) Long1
1B***39Nut Connecting Link1
See all parts with full part numbers in Heavy Parts AI →
Hydraulic System
277-8217 Lines Gp-Connecting
14***15Connector As2
14***41Connector Group2
15***94Coupler As-Quick Disconnect; (Female)(Quick Disconnect)1
See all parts with full part numbers in Heavy Parts AI →
277-8212 Lines Gp-Connecting
14***15Connector As2
14***41Connector Group2
15***94Coupler As-Quick Disconnect; (Female)(Quick Disconnect)1
See all parts with full part numbers in Heavy Parts AI →
277-8222 Lines Gp-Connecting
13***38Connector1
14***15Connector As2
15***94Coupler As-Quick Disconnect; (Female)(Quick Disconnect)1
See all parts with full part numbers in Heavy Parts AI →
276-4431 Lines Gp-Cylinder & Manifold
13***38Connector1
14***15Connector As2
14***39Tee As2
See all parts with full part numbers in Heavy Parts AI →
276-4420 Lines Gp-Cylinder & Manifold
13***38Connector1
14***15Connector As2
14***41Connector Group2
See all parts with full part numbers in Heavy Parts AI →
276-4411 Lines Gp-Cylinder & Manifold
13***38Connector1
14***15Connector As2
14***41Connector Group2
See all parts with full part numbers in Heavy Parts AI →
Service Equipment And Supplies
277-8213 Plate & Film Gp
22***45Film-Warning; (Crush Hazard, Stay Back)2
22***30Film-Warning; (Flying Debris, Stay Back, U.S.)1
22***42Film-Warning; (Crush Hazard, Stay Back, U.S.)2
See all parts with full part numbers in Heavy Parts AI →
276-4419 Plate & Film Gp
22***45Film-Warning; (Crush Hazard, Stay Back)2
22***30Film-Warning; (Flying Debris, Stay Back, U.S.)1
22***42Film-Warning; (Crush Hazard, Stay Back, U.S.)2
See all parts with full part numbers in Heavy Parts AI →
277-8223 Plate & Film Gp
22***45Film-Warning; (Crush Hazard, Stay Back)2
22***30Film-Warning; (Flying Debris, Stay Back, U.S.)1
22***42Film-Warning; (Crush Hazard, Stay Back, U.S.)2
See all parts with full part numbers in Heavy Parts AI →
276-4433 Plate & Film Gp
22***45Film-Warning; (Crush Hazard, Stay Back)2
22***30Film-Warning; (Flying Debris, Stay Back, U.S.)1
22***42Film-Warning; (Crush Hazard, Stay Back, U.S.)2
See all parts with full part numbers in Heavy Parts AI →
277-8216 Plate & Film Gp
22***45Film-Warning; (Crush Hazard, Stay Back)2
22***30Film-Warning; (Flying Debris, Stay Back, U.S.)1
22***42Film-Warning; (Crush Hazard, Stay Back, U.S.)2
See all parts with full part numbers in Heavy Parts AI →
276-4413 Plate & Film Gp
22***45Film-Warning; (Crush Hazard, Stay Back)2
22***30Film-Warning; (Flying Debris, Stay Back, U.S.)1
22***42Film-Warning; (Crush Hazard, Stay Back, U.S.)2
See all parts with full part numbers in Heavy Parts AI →
Work Tool Arrangement
276-4415 Landscape Power Rake Ar
22***15Harness As-Work Tool; (Connecting)1
27***12Wiring Group-Work Tool1
27***15Landscape Power Rake Ar1
See all parts with full part numbers in Heavy Parts AI →
276-4405 Landscape Power Rake Ar
22***15Harness As-Work Tool; (Connecting)0
27***05Landscape Power Rake Ar1
27***06Frame Group-Landscape Rake1
See all parts with full part numbers in Heavy Parts AI →
276-4425 Landscape Power Rake Ar
22***15Harness As-Work Tool; (Connecting)1
27***12Wiring Group-Work Tool1
27***25Landscape Power Rake Ar1
See all parts with full part numbers in Heavy Parts AI →
277-8220 Landscape Power Rake Ar
27***26Frame Group-Landscape Rake1
27***27Drive Group-Landscape Rake1
27***20Landscape Power Rake Ar1
See all parts with full part numbers in Heavy Parts AI →
277-8210 Landscape Power Rake Ar
27***06Frame Group-Landscape Rake1
27***07Drive Group-Landscape Rake1
27***10Landscape Power Rake Ar1
See all parts with full part numbers in Heavy Parts AI →
277-8215 Landscape Power Rake Ar
27***16Frame Group-Landscape Rake1
27***17Drive Group-Landscape Rake1
27***15Landscape Power Rake Ar1
See all parts with full part numbers in Heavy Parts AI →
Work Tools
276-4407 Drive Gp-Landscape Rake
03***55Locknut; (5/16-18-Thd)(Marked X)2
23***89Nut-Flange; (1/2-13-Thd)4
27***07Drive Group-Landscape Rake1
See all parts with full part numbers in Heavy Parts AI →
276-4417 Drive Gp-Landscape Rake
03***55Locknut; (5/16-18-Thd)(Marked X)2
23***89Nut-Flange; (1/2-13-Thd)4
27***17Drive Group-Landscape Rake1
See all parts with full part numbers in Heavy Parts AI →
276-4427 Drive Gp-Landscape Rake
03***55Locknut; (5/16-18-Thd)(Marked X)2
1K***72Locknut Horn To Guard4
26***15Motor Group-Gerotor1
See all parts with full part numbers in Heavy Parts AI →

PR172 serial number reference

The PIN plate sits on the main frame of the power box rake, typically near the hitch/mounting plate on the top or side rail, not on any roller or motor housing. Read the first three characters of the 17-character PIN as the prefix, which ties the unit to its specific width/angle configuration; the digits that follow are the sequential unit number within that run.

PrefixIdentifies
RDDPR172 hydraulic-angle power box rake, 72 in (1829 mm) roller width
RPBPR172 manual-angle power box rake, 72 in (1829 mm) roller width

Frequently asked questions

What configurations and weight options does the PR172 come in?

Two configurations, both on a 72 in (1829 mm) rotor width with 20-degree left/right angling: Manual Angle at 899.5 lb (408 kg), where the angle is reset by hand at the frame, and Hydraulic Angle at 925.9 lb (420 kg), where the operator sets the angle from the cab through a dedicated cylinder.

What hydraulic flow does the PR172 need from the carrier?

It runs on a standard-flow circuit of 49-86 L/min (13-23 US gpm) at 230 bar (3336 psi). It is a passive tool with no engine or ECM, so it draws only hydraulic power (plus an electrical signal on hydraulic-angle units to run the angle cylinder) from the host machine.

Where does the PR172 sit in Cat's power box rake lineup, and what replaced it?

The PR172 is a mid-width entry in Cat's power box rake family, which runs from the narrower PR121/PR123 up through the wider PR184 and PR190. It is a width option within one ongoing lineup rather than a model with a distinct predecessor or successor, and Cat continues to sell it alongside those siblings.

What PR172 owners discuss

Where do owners usually find hydraulic leaks on a PR172 power box rake?
Most reported seepage on power box rake attachments shows up at the roller drive end, where the hydraulic motor mates to the chain case or drum housing. Chain-case and drum seals harden with age and start weeping even after the drive bearings themselves are still good, so a wet motor face does not always mean the motor is bad. Check hose fittings and the motor mounting flange first before condemning the motor. Have your dealer verify motor case drain pressure and seal condition before replacing the motor.
How much tine or tooth wear is normal, and when should they be replaced?
The carbide-tipped or high-carbon tines on a power box rake drum are a wear item, not a warranty item, and abrasive soil, gravel, and root contact will round them off over time. Owners typically rotate or replace teeth individually rather than the whole drum once wear starts affecting penetration depth or leaving streaks in a finished pass. Broken or chipped teeth from hidden rock strikes are treated as normal wear-and-tear, not a defect.
What roller bearing problems show up over time on this type of rake?
Drum end bearings take constant radial load from soil resistance and eventually develop play or start growling, especially on the non-drive side where seal protection is lighter. Replacement usually requires heating or pressing the old race out of the frame pocket rather than a simple pull. Grease intervals matter more than most operators expect - a dry bearing on a rake drum fails much sooner than one on a lower-load attachment.
Does the host carrier's hydraulic flow really matter for a PR172?
Yes. The PR172 is rated for roughly 49 to 86 L/min (13 to 23 gpm) at about 230 bar (3,340 psi), and running it on a high-flow skid steer or multi-terrain loader outside that window is a common complaint. Too much flow overheats the motor and pushes seals out; too little flow slows drum rotation and leaves a rougher finish. Owners moving the rake between a standard-flow and high-flow machine should confirm the carrier's auxiliary circuit is set to the attachment's rated range, not the machine's max output.
What issues come up with the angle adjustment on manual vs hydraulic versions?
On the manual-angle PR172, the adjustment pin and slot wear enough after heavy use that the box no longer holds a set angle under load and needs re-pinning or bushing. On the hydraulic-angle version, the complaint is usually a slow or drifting angle cylinder from a worn rod seal, which lets the box creep back toward center during a pass. Gauge wheel height on both versions needs to be reset any time the angle is changed, since the leading and trailing wheel heights work together to control penetration depth.
What wears out at the quick-attach mount plate?
The mount plate pins and bushings take repeated shock load from raking in rocky or root-bound ground, and worn bushings show up as visible play or rattle between the attachment and the carrier's coupler when the machine is rocked side to side. Left unaddressed, this play accelerates wear on both the attachment plate and the carrier's coupler faces. Have your dealer verify pin and bushing wear against factory tolerance before continuing to run a rake that rattles at the mount, since a worn coupler is a detachment risk.
What should a buyer inspect on a used PR172 before purchase?
Walk the tine row for uneven wear or missing teeth, then rock the drum by hand to feel for bearing play at both ends. Look for weeping at the hydraulic motor face and chain case seam, and cycle the angle function (manual pin or hydraulic cylinder) to confirm it holds position under load. Check the gauge wheel yokes for bent stems or seized pivots, and inspect the quick-attach mount plate and pins for elongation or looseness. Confirm the seller can state the hydraulic flow and pressure the rake was run at, since a unit run above its rated flow window is more likely to have a stressed motor or premature seal wear.

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

Need a specific PR172 part?

Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.

Search parts in the app