| Main Component | 800350995 | Slewing bearing / circle drive turntable bearing |
| Slewing Ring (Alternate for GR Series) | 380602230 | Genuine XCMG OEM heavy‑duty turntable bearing for GR135, GR165, GR180, GR2003, GR215, GR260, GR300, GR350 motor graders – precision‑machined with hardened raceways |
| Circle Drive Pinion Gear | 380900934 | Circle drive hydraulic motor pinion gear (meshes with slewing ring teeth) |
| Circle Drive Worm Gear (Drive Gear) | RXB0004-14 | Drive gear – part of circle drive worm gear assembly |
| Circle Drive Form Gear | RXB0004.3 | Form gear – key component of circle drive transmission |
| Circle Drive Worm Gearbox Housing | RXB0004-16 | Heavy‑duty gearbox housing for circle drive mechanism |
| Worm Gear Shaft | RXB0004-11 | Worm shaft for circle rotation power transmission |
| Slewing Ring Mounting Bolt | 279500128 | High‑strength hex bolt (M20×2.5 or as per ring pattern) |
| Slewing Ring Lock Washer | 275300096 | Spring lock washer for slewing ring bolts |
| Slewing Ring Flat Washer | 275300096 | Standard flat washer for load distribution |
| Slewing Ring Seal (Replacement) | 380602231 | Double polyurethane lip seal – outer (replace during overhaul) |
| Slewing Ring Seal (Inner – Raceway) | 380602232 | Grease seal for ball/roller raceway |
| Cylindrical Roller (Slewing Ring Internal) | 860119645 | Precision‑ground chrome steel rolling element – fundamental load‑carrying component in large‑diameter slewing bearings |
| Roller Set (Needle – for Circle Drive) | 800107101 | Needle roller set (35.2×55.2×37 mm) – replaces worn needle bearings in circle drives and articulation joints |
| Thrust Washer (Slewing Ring) | 380900935 | Axial thrust washer for slewing ring assembly |
| Circle & Drawbar Assembly (Complete) | 380900936 | Complete grader circle and drawbar assembly |
| Blade Circle (Turntable) | 380900940 | Motor grader circle (blade rotation platform) – includes slewing bearing mounting surface |
| Circle Rotating Ring | 380900941 | Inner / outer rotating ring of circle mechanism |
| Circle Wear Strip (Replaceable) | 380900942 | Wear strip (sliding surface) between circle and drawbar – minimizes friction |
| Blade Assembly (Moldboard – Complete) | 380900936 | Complete blade with cutting edges for GR2153 |
| Blade Cutting Edge (Center) | 253208801 | Bolt‑on center cutting edge for GR series blade |
| Blade Cutting Edge (Left) | 253208802 | Left cutting edge section |
| Blade Cutting Edge (Right) | 253208803 | Right cutting edge section |
| Blade Guard Plate (Rear Wear Plate) | 253208804 | Rear blade guard plate – protects moldboard structure |
| Blade Tilt Cylinder | 803081220 | Hydraulic cylinder for blade tilt adjustment |
| Blade Tilt Cylinder Seal Kit | 803081220SK | Complete seal repair kit for blade tilt cylinder |
| Blade Lift Cylinder (Left) | 803081218 | Left blade lift cylinder |
| Blade Lift Cylinder (Right) | 803081219 | Right blade lift cylinder |
| Blade Lift Cylinder Seal Kit (Left/Right) | 803081218SK | Seal repair kit for blade lift cylinders |
| Circle Drive Hydraulic Motor | 380900934 | Hydraulic motor that drives the circle rotation pinion |
| Circle Drive Hydraulic Motor Seal Kit | 380900934SK | Seal repair kit for circle drive motor |
| Circle Drive Worm Gearbox Complete | RXB0004 | Complete worm gearbox assembly (includes housing, gears, bearings, seals) |
| Bearing Seat (Worm Gearbox) | RXB0004-9 | Bearing seat for worm gearbox – supports shaft bearings |
| Bearing Cap (Worm Gearbox – Upper) | RXB0004-6 | Upper bearing cap – retains bearings |
| Bearing Cap (Worm Gearbox – Lower) | RXB0004-17 | Lower bearing cap |
| Worm Gearbox Cover (Superior) | RXB0004-7 | Top cover for worm gearbox |
| Oil Level Indicator (Worm Gearbox) | RXB0004.21 | Sight glass for checking lubricant level in circle drive |
| Seal Gasket (Worm Gearbox) | RXB0004-4 | Gasket for gearbox sealing surfaces |
| Combining Bushing (Gearbox) | RXB0004-10 | Bushing for alignment and wear protection |
| Shim Ring (for Gearbox) | RXB0004-5 | Adjustment shim for gearbox preload / clearance |
| Bearing (Worm Gearbox – Tapered Roller) | 105010038 | Tapered roller bearing for gearbox shaft support |
| Bearing (Worm Gearbox – Thrust Roller) | 105010011 | Thrust roller bearing for axial load absorption |
| Two Roller Bearing (Gearbox) | GB/T297-94 | Double row roller bearing for high load capacity |
| Bearing – Taper Roller | 17 | Tap roller bearing for additional shaft support |
| O‑Ring (Worm Gearbox) | GB9452.1-82 | O‑ring for gearbox sealing applications |
| O‑Ring (Additional – Gearbox) | GB9452.2-82 | Second O‑ring variant for sealing |
| Fitting Key (Gearbox) | RXB0004-1 | Key for gear / shaft connection |
| Threaded Plug (Gearbox – Drain / Fill) | 17 | Threaded plug – filler or drain port |
| Worm Gearbox Grease Fitting (Straight) | 108000002 | Straight lubrication nipple (M10×1) – for gearbox re‑greasing |
| Screw (Worm Gearbox – M10) | 104030133 | Hex screw (M10) for gearbox fastening |
| Screw (Worm Gearbox – Various) | GB/T70.1-96 | Socket head screw – general fastening |
| Washer (Worm Gearbox – General) | GB39-87 | Standard washer for bolt assemblies (various positions) |
| Washer (Worm Gearbox – Additional) | 104040006 / 104040007 / 104040009 / 104040089 | Various flat washers for gearbox and axle components |
| Bolt (Worm Gearbox – M8 / M10) | 104020077 / 104020010 / 104000091 / 104000318 / 104000109 / 001500025 / 001500032 / 001500029 / 001500030 | Hex bolts (various lengths) – for gearbox and axle assembly |
| Nut (Worm Gearbox – Notch Nut) | 104030095 / 104030012 | Hex nuts (various sizes) including notched / castle nut type |
| Baffle (Oil / Debris – Gearbox) | 001210125 | Oil / debris baffle inside gearbox |
| Oil Baffle (Additional) | 27 | Secondary oil baffle for splash lubrication control |
| Spherical Bearing (Circle Rotation) | 800515284 | Heavy‑duty spherical plain bearing – connects circle turn mechanism to drawbar, supports blade lift and articulation joints on GR165, GR215, GR300, GR350 graders |
| Spherical Bearing (Steering / Linkage – GE40ES) | 800513992 | Maintenance‑free spherical plain bearing (GE40ES) – 40 mm bore for blade lift linkages, ripper connections, circle rotation mechanisms |
| Spherical Bearing (Heavy‑Duty – GE60ES) | 800515285 | Steel‑on‑steel spherical plain bearing (GE60ES) – 60 mm bore for motor grader linkage joints, circle drive articulation, blade lift mechanisms |
| Spherical Bearing (General – Drawbar) | 800515284 | Connects circle turn mechanism and drawbar – supports multi‑directional loads and vibration under blade articulation |
| Plain Bearing (Circle Pin) | 380900931 | Bronze or steel‑backed bushing for pin mounting in circle mechanism |
| Circle Pivot Pin (Front) | 380900919 | Front circle pivot pin |
| Circle Pivot Pin (Rear) | 380900920 | Rear circle pivot pin |
| Pin (Circle / Drawbar Connection) | 380900917 | Heavy‑duty pivot pin for circle linkage – securing pin with cross‑hole |
| Pin Retaining Bolt (for Circle Pins) | 279500128 | Hex bolt for pin retention (M8×25 or M10×30 – verify size) |
| Pin Retaining Cotter Pin | 803164120 | Split pin for castle nut (diameter 3–5 mm, length 30–40 mm) |
| Thrust Washer (Pin Axial Play) | 380900930 | Hardened steel thrust washer – shim for pin axial clearance |
| Dust Seal (Lip Type – for Circle Pins) | 860106167 | Double‑lip dust seal for circle pin / bushing interface |
| Circle Drive Control Valve | 803104503 | Auxiliary hydraulic spool section – controls circle rotation direction and speed |
| Circle Rotation Pilot Hose | 860115390 | Pilot signal hose (cab to control valve) – circle rotate command |
| Circle Drive Pressure Hose | 860115389 | High‑pressure hose (hydraulic pump to circle drive motor) |
| Circle Drive Return Hose | 860115388 | Low‑pressure return hose (circle motor to tank) |
| Main Hydraulic Pump (Circle Supply) | 803009979 | Main axial piston pump – supplies oil to circle drive circuit |
| Steering / Pilot Hydraulic Pump | 803072822 | Gear pump – supplies pilot control circuit (circle rotation signals) |
| Hydraulic Tank (Reservoir) | 803200100 | Main hydraulic oil reservoir (110 L capacity for GR2153) |
| Hydraulic Return Filter (Spin‑on) | 803100039 | Return line filter assembly for hydraulic system |
| Hydraulic Return Filter Element | 803100041 | Replacement filter element (10 micron) |
| Hydraulic Oil Cooler | 803107100 | Air‑cooled oil cooler – maintains hydraulic oil temperature |
| Joystick Handle (Circle / Blade Control) | 860633850 | Electro‑hydraulic joystick – controls blade lift, tilt, and circle rotation |
| Pilot Control Valve (Joystick Base) | 860633853 | Proportional pilot valve – converts joystick input to pilot pressure |
| Front Axle Assembly (GR2153) | 250300731 | Complete front drive axle (steering axle) |
| Rear Axle Assembly (Tandem) | 250300732 | Tandem rear drive axle with planetary final drives |
| Axle Shaft (Left / Right) | 251500307 / 251500308 | Axle shaft set (right / left orientation dependent) |
| Wheel Hub | 252000421 | Wheel hub assembly – front and rear |
| Tapered Roller Bearing (Hub – Inner) | 271400216 | Inner wheel bearing |
| Tapered Roller Bearing (Hub – Outer) | 271400218 | Outer wheel bearing |
| Wheel Hub Oil Seal | 272200085 | Hub seal (keeps gear oil in hub) |
| Tire (GR2153 Standard) | — | 17.5‑25 12PR pneumatic tire (8–10 ply rating) |
| Engine Assembly (GR2153 – Cummins) | — | Cummins QSB6.7 diesel engine – 164 kW @ 2000 rpm |
| Engine Water Pump | 860148431 | Engine coolant circulation pump |
| Radiator Water Tank | 860148427 | Engine cooling radiator assembly |
| Radiator Cap (Pressure – 0.5–0.9 bar) | 860148428 | Pressure cap for radiator |
| Radiator Hose (Upper) | 860115430 | Upper coolant hose (engine to radiator) |
| Radiator Hose (Lower) | 860115431 | Lower coolant hose (radiator to water pump) |
| Coolant Expansion Tank | 860148429 | Overflow / degas reservoir (50 L capacity for GR2153) |
| Cooling Fan (Suction) | 860148434 | Engine cooling fan (plastic or metal) |
| Fan Belt (Serpentine) | 860148437 | Drive belt (alternator / fan / water pump) |
| Alternator (28V / 120A) | — | Brushless alternator |
| Starter Motor (24V) | — | Heavy‑duty starter |
| Battery (12V / 24V system) | — | Two 12V batteries (connected in series for 24V) |
| Battery Isolator Switch | 252911393 | Master disconnect switch |
| Fuse Kit (5A – 30A – Assorted Blade Fuses) | 803682279 – 803682283 | Blade fuses (5A, 10A, 15A, 20A, 30A) |
| Relay (General Purpose – 24V) | 803604013 | ISO mini relay (4‑pin / 5‑pin) |
| Control Button (Horn / Vibration) | 803604621 | Dashboard push button |
| Harness Connector (Deutsch) | 803399778 | Electrical connector (receptacle / pin) |
| Coolant Temperature Sensor | WDG1371 | Water temperature sender |
| Dashboard Display / Instrument Cluster | 803604622 | LCD / analog display – speed, temperature, fuel, warning indicators |
| LED Work Light (Left) | 860134405 | Left front LED work light |
| LED Work Light (Right) | 860134406 | Right front LED work light |
| Headlight Cover (Left) | 252911337 | Left headlight lens / housing cover |
| Headlight Cover (Right) | 252911338 | Right headlight lens / housing cover |
| Electric Horn (High Tone) | 803688413 | Warning horn – high frequency |
| Electric Horn (Low Tone) | 803688414 | Warning horn – low frequency |
| Reverse Alarm (Backup Buzzer) | 803688433 | Audible reverse alarm (107 dB) |
| Grease Fitting (Straight – M10×1) | 803164200 | Standard lubrication nipple – for pivot pins, U‑joints, bearings |
| Grease Fitting (90° – Angled, M10×1) | 803164201 | 90° angled grease nipple – for tight clearance areas |
| Grease Fitting Cap (Rubber Dust Cover) | 803164202 | Protective cap for grease nipple – keeps dirt out |
| O‑ring (General Purpose) | 803164037 | O‑ring for fittings (various sizes) |
| Composite Gasket (Q/SC1294‑2000) | 803164100 | Hard composite gasket for flange sealing |
| O‑ring (24.99×3.53 – 214N552‑90) | 803401122 | Standard O‑ring for port fittings |
| O‑ring (37.69×3.53 – 222N552‑90) | 803401130 | Standard O‑ring for larger ports |
| O‑ring (56.74×3.53 – 228N552‑90) | 803401136 | Standard O‑ring for flange fittings |
| O‑ring (75.79×3.53 – 234N552‑90) | 803401142 | Standard O‑ring for manifold mounting |
| O‑ring (94.84×3.53 – 240N552‑90) | 803401148 | Standard O‑ring for large flanges |
| O‑ring (120.24×3.53 – 248N552‑90) | 803401156 | Large O‑ring for case housing |
| O‑ring (164.69×3.53 – 260N552‑90) | 803401168 | Extra‑large O‑ring for tank access covers |
| O‑ring (26×2.0 – 573N552‑90) | 803401366 | Small O‑ring for pilot lines |
| Hydraulic Oil (ISO VG 46 – 20L / 200L) | 860115450 | Genuine XCMG hydraulic oil (110 L capacity for GR2153) |
| Axle Gear Oil (GL‑5 85W‑140 – 20L) | 860115453 | Genuine XCMG axle gear oil (28 L capacity for drive axle, 46 L for balancing box) |
| NLGI #2 Lithium Grease (400g Cartridge) | 860115451 | General purpose grease – for pins, U‑joints, bearings, circle pivot points |
| Threadlocker (Medium Strength – Loctite 243) | — | For fasteners (slewing ring mounting bolts, pin retaining bolts) |
| Anti‑seize Compound (High Temperature) | — | For pipe threads and splines (circle drive pinion to motor shaft) |
| Gasket Sealant (Anaerobic Flange Sealant) | 860115452 | For flange sealing (worm gearbox cover, axle housing) |
| Slewing Bearing Installation Tool (Lifting Spreader Bar) | — | For safe lifting of heavy slewing bearing during replacement |
| Dial Gauge (Backlash Measurement) | — | For measuring circle drive gear backlash |
| Torque Wrench (200 – 600 Nm Range) | — | For tightening slewing ring mounting bolts |
| Service Manual – GR2153 Circle Drive Section | — | Refer to XCMG workshop manual (circle drive overhaul procedure) |
| Parts Catalog – GR2153 Illustrated | — | Exploded view drawing – slewing bearing, circle assembly, worm gearbox |
60000075 Engine Radiator Replacement for Sany Excavator
