Chelsea PTO 852 Series Parts Manual
Model Number Designation
Parts List Bill of Materials 852 Series
Item 8Item 9Item 7Item 6Item 3Item 4Item 5Item 1Item 2Item 37Item 34Item 36Item 35Item 34Item 39Item 37Item 34Item 36Item 35Item 34Item 15Item 16Item 42Item 40Item 20Item 41Item 14Item 18Item 10Item 46Item 13Item 10Item 12Item 21Item 17Item 19Item 45Item 43Item 44Item 23Item 24Item 25Item 27Item 28Item 29Item 30Item 31Item 32Item 33Item 21Item 21Item 48Item 11Item 2Click a number on the diagram to highlight that part below.
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| 1 | 1P452 | Housing (4 Arrangement) | 1 | $1,544.25 | Add to Cart | |
| 1P451 | Housing (6 Arrangement) | 1 | $1,544.25 | Add to Cart | ||
| 2 | 2P557 | Inner Clutch Gear | 1 | $671.90 | Add to Cart | |
| 3 | 3P756 | Output Shaft (XV Output) | 1 | $1,305.68 | Add to Cart | |
| 4 | 379099 | Drive Key (.250" X .187 " X 1 .493") | 1 | $4.10 | Add to Cart | |
| 5 | 380486 | Stop Nut, Nylon Lock Thin 1-1/4" Hex Head (.875"-14) (XV Output) | 1 | $60.21 | Add to Cart | |
| 6 | 380503 | 1410 Series Companion Flange (XV Output) | 1 | $754.86 | Add to Cart | |
| 7 | 28P211 | Oil Seal (3 .001 " X 2 .000" X .375") (XV Output) | 1 | $35.18 | Add to Cart | |
| 8 | 4P76 | Spacer (XV Output) | 1 | $36.38 | Add to Cart | |
| 9 | 21P75 | Bearing Cap (XV Output) | 1 | $424.23 | Add to Cart | |
| 10 | 22P252 | Bearing Cover Gasket | 2 | $6.29 | Add to Cart | |
| 11 | 37843314 | 3/4" Hex Head Cap Screw (.500"-13 X 1 .500") | 4 | $3.89 | Add to Cart | |
| 12 | 37843314 | 3/4" Hex Head Cap Screw (.500"-13 X 1 .500") (XV Output) | 4 | $3.89 | Add to Cart | |
| 13 | 550055 | Ball Bearing (1 .771 " X 3 .937 " X .984") | 1 | $213.15 | Add to Cart | |
| 14 | 379231 | 1/8" NPT Plug | 3 | $1.50 | Add to Cart | |
| 15 | 27P9 | Lock Plate | 2 | $3.19 | Add to Cart | |
| 16 | 3784308 | 1/2 " Hex Head Cap Screw (.312 " -18 X .750") | 2 | $2.06 | Add to Cart | |
| 17 | 550311 | Ball Bearing (1 .772 " X 3 .346" X .748") | 1 | $81.15 | Add to Cart | |
| 18 | 328835X | Bearing Cap & Seal Sub-Assembly | 1 | $465.48 | Add to Cart | |
| 21P377 | Bearing Cap | 1 | $282.33 | Add to Cart | ||
| 28P119 | Oil Seal (1 .379" X .875" X .250") | 1 | $26.61 | Add to Cart | ||
| 378811 | Back-Up Plate. | 1 | $5.21 | Add to Cart | ||
| 378849 | Lockring | 1 | $2.12 | Add to Cart | ||
| 19 | 378263 | Lockring | 1 | $19.87 | Add to Cart | |
| 20 | 550749 | Ball Bearing (2 .1654" X 3 .9370" X .8268") | 1 | $240.92 | Add to Cart | |
| 21 | 378477 | Lockring External (XV Output) | 3 | $3.29 | Add to Cart | |
| 23 | 379328 | Piston Ring | 2 | $55.80 | Add to Cart | |
| 24 | 28P63 | Block Vee Ring (2 .501 " X 2 .125" X .188") | 2 | $44.90 | Add to Cart | |
| 25 | 28P64 | Block Vee Ring (5 .250" X 4.750" X .250") | 1 | $48.68 | Add to Cart | |
| 26 | 328114X | Piston Assembly (Includes Piston And 2 Balls) | 1 | $670.31 | Add to Cart | |
| 66P3 | Piston | 1 | $666.37 | Add to Cart | ||
| 5005667 | Ball (.25") | 2 | $1.10 | Add to Cart | ||
| 27 | 37P24 | Spring (2 .531 " X 2 .13") | 1 | $12.29 | Add to Cart | |
| 28 | 378426 | Spring Retainer. | 1 | $57.07 | Add to Cart | |
| 29 | 378427 | Lockring | 1 | $4.51 | Add to Cart | |
| 30 | 378254 | Friction Disc. | 7 | $30.00 | Add to Cart | |
| 31 | 379776 | Clutch Plate | 8 | $17.85 | Add to Cart | |
| 32 | 378337 | Opposing Clutch Disc Stop | 1 | $333.68 | Add to Cart | |
| 33 | 378266 | Lockring | 1 | $13.07 | Add to Cart | |
| 34 | 31P90 | Thrust Washer (1 .382 " X 2 .042 " X .062 ") | 4 | $9.04 | Add to Cart | |
| 35 | 14P48 | Spacer (1 .080" X 1 .375" X .339") Continued On Next | 2 | $23.23 | Add to Cart | |
| 36 | 378769 | Thrust Bearing (1 .375" X 2 .000" X .125") | 2 | $148.20 | Add to Cart | |
| 37 | 378389 | Needle Roller Bearing | 42 | $2.68 | Add to Cart | |
| 39 | 14P27 | Spacer (1 .156" X 1 .442 " X .687 ") | 1 | $20.82 | Add to Cart | |
| 40 | 9P37 | Idler Shaft (1 .07 ") | 1 | $461.39 | Add to Cart | |
| 41 | 28P240 | O-Ring (.796" X .139") | 1 | $5.99 | Add to Cart | |
| 42 | 28P239 | O-Ring (1 .046" X .139") | 1 | $6.64 | Add to Cart | |
| 43 | 35P93 | Gasket Cover Plate | 1 | $11.55 | Add to Cart | |
| 44 | 3784296 | 7/16" Hex Head Cap Screw (.250" X 20" X .625") | 4 | $3.62 | Add to Cart | |
| 45 | 34P136 | Cover Plate. | 1 | $48.49 | Add to Cart | |
| 46 | 68P511 | Adhesive Label | 1 | Call for availability | ||
| 48 | 38007613 | Flat Hardened Washer (.950" x 1.762" x .157") | 1 | $3.51 | Add to Cart | |
| 32835611X | Gasket & Seal Kit | 1 | $226.03 | Add to Cart | ||
| 3283682X | Needle Bearing Kit (Includes Spacers) Stud Kits | 1 | $183.66 | Add to Cart | ||
| 3281708X | Mounting Stud Kit Installation Kits | 1 | $57.14 | Add to Cart | ||
| 328715X | 12V Electric Shift Installation Kit (B Shift) | 1 | $702.03 | Add to Cart | ||
| 328749X | 24V Electric Shift Installation Kit (D Shift) | 1 | $702.03 | Add to Cart | ||
| 32894817X | Gasket & Installation Instructions Loose Parts | 1 | $46.81 | Add to Cart | ||
| 328075X | Pressure Lube Hose Assembly | 1 | $150.56 | Add to Cart |
Gear Ratio Options 852 Series
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| 5P375 | Input Gear, Spur, 32 Teeth, 18 Teeth, Model 852*BAH | 15X | Call for availability | |||
| 5P296 | Input Gear, Spur, 32 Teeth, 18 Teeth, Model 852*BAK | 15X | $1,766.37 | Add to Cart | ||
| 5P297 | Input Gear, Spur, 32 Teeth, 21 Teeth, Model 852*GAK | 12X | $1,766.37 | Add to Cart | ||
| 5P295 | Input Gear, Spur, 32 Teeth, 23 Teeth, Model 852*JAK | 16X | $1,709.37 | Add to Cart |
Shift Options 852 Series
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| 328715X | Shift Installation Kit, 12V (Includes Items 55 Thru 73) | 1 | $702.03 | Add to Cart | ||
| 328749X | Shift Installation Kit, 24V (Includes Items 55 Thru 73) | 1 | $702.03 | Add to Cart | ||
| 55 | 3791931 | Solenoid Valve, 12V For 328715X Kit | 1 | $473.29 | Add to Cart | |
| 3791932 | Solenoid Valve, 24V For 328749X Kit | 1 | $456.04 | Add to Cart | ||
| 56 | 37925414 | Black Wire With Two Ring Connectors | 1 | $8.68 | Add to Cart | |
| 57 | 37925413 | Blue Wire With One Ring Connector. | 1 | $11.68 | Add to Cart | |
| 58 | 3792543 | Green Wire With One Butt Connector. | 1 | $10.74 | Add to Cart | |
| 328963X | Parts Bag 12V Kit (328715X) (Includes Items 59 Thru 73) | 1 | $177.52 | Add to Cart | ||
| 328964X | Parts Bag 24V Kit (328749X) (Includes Items 59 Thru 73) | 1 | $177.52 | Add to Cart | ||
| 59 | 379547 | Pressure Switch | 1 | No longer available - Call for replacement | ||
| 60 | 378881 | Rocker Switch | 1 | $111.97 | Add to Cart | |
| 61 | 378884 | Fuse Holder, 9 Amp | 1 | $5.99 | Add to Cart | |
| 62 | 379449 | Screened Adaptor (.125"-18 NPT) | 1 | $13.18 | Add to Cart | |
| 63 | 378966 | Screened Street Tee | 1 | $30.15 | Add to Cart | |
| 64 | 379336 | Bracket. | 1 | $10.11 | Add to Cart | |
| 65 | 378978 | Indicator Light, 12V (Kits 328963X & 328715X) | 1 | $25.82 | Add to Cart | |
| 379005 | Indicator Light, 24V (Kits 328964X & 328749X) | 1 | No longer available - Call for replacement | |||
| 66 | 379253 | Ring Connector | 2 | $3.11 | Add to Cart | |
| 379061 | Wire Ties | 6 | $1.46 | Add to Cart | ||
| 67 | 379257 | Splice Connector | 1 | $2.91 | Add to Cart | |
| 68 | 379258 | Solenoid Mounting Bracket. | 1 | $5.11 | Add to Cart | |
| 69 | 5003577 | Lock Washer | 2 | $1.07 | Add to Cart | |
| 70 | 5004576 | Mounting Screw (.190"-32 X .438") | 2 | $1.12 | Add to Cart | |
| 71 | 379306 | Fork Connector | 3 | $2.50 | Add to Cart | |
| 72 | 379252 | Butt Connector | 1 | $2.30 | Add to Cart | |
| 73 | 379280 | Adaptor Fitting | 2 | $7.49 | Add to Cart |
Output Options 852 Series Pump Flange Assembly XS & XU SAE C Flange 2 or 4-Bolt
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| 94 | 3P758 | Output Shaft (1-1/4"-14T) (Assembly XS & XY) | 1 | $1,328.30 | Add to Cart | |
| 95 | 550055 | Bearing (Assembly XS & XY) | 1 | $213.15 | Add to Cart | |
| 96 | 378477 | Lockring (Assembly XS & XU) | 1 | $3.29 | Add to Cart | |
| 97 | 28P212 | Oil Seal (Assembly XS & XU) | 1 | $24.02 | Add to Cart | |
| 98 | 21P383 | Pump Flange, 4 & 6 Arrangement (Assembly XS & XU) | 1 | $512.49 | Add to Cart | |
| 99 | 3784508 | 3/8" Socket Head Cap Screw (.500"-13 X 1 .50") (2-Bolt Assembly XU Only) | 4 | $9.01 | Add to Cart | |
| 100 | 379442 | Shoulder Stud (.500"-13 X .500"-20 X 3 .750") Self Locking (4-Bolt Assembly XS Only) | 4 | $53.51 | Add to Cart | |
| 101 | 50035613 | Lock Washer (.50" Dia.) (Assembly XS Only) | 4 | $1.31 | Add to Cart | |
| 102 | 5003815 | 3/4" Hex Jam Nut (.500"-20) (Assembly XS Only) | 4 | $1.33 | Add to Cart |
Additional Parts Listed in This Manual
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| 2-P-265 | Output Gear, 32 Teeth, Models 852*BAH, 852*BAK | $2,908.83 | Add to Cart | |||
| 2-P-266 | Output Gear, 29 Teeth, Model 852*GAK | $2,947.20 | Add to Cart | |||
| 2-P-264 | Output Gear, 27 Teeth, Model 852*JAK | $1,279.11 | Add to Cart | |||
| 328112X | Spider Gear Assy | $2,947.20 | Add to Cart | |||
| 378267 | Retaining Ring | $13.79 | Add to Cart | |||
| 328113X | Spider Gear Hub Assy | $831.06 | Add to Cart | |||
| 328115X | Spider Gear Assy | $2,908.83 | Add to Cart | |||
| 328116X | Spider Gear Assy | $2,452.92 | Add to Cart | |||
| 39-P-136 | Cover Plate | 1 | Call for availability | |||
| 380668X | 380668 | $5.98 | Add to Cart | |||
| 378054 | Dowel Pin (.438" X 1.000") | 2 | $4.88 | Add to Cart | ||
| 379424-21 | Mounting Stud | $5.84 | Add to Cart | |||
| 379745 | Flange Nut (.438"-20) | 8 | $2.34 | Add to Cart | ||
| 75-P-46X | Wire & Connectors Kit | 3 | $27.77 | Add to Cart | ||
| 379686-1 | 12V Hydraulic Shift Solenoid Valve | 1 | $473.29 | Add to Cart | ||
| 379686-2 | 24V Hydraulic Shift Solenoid Valve | 1 | $466.27 | Add to Cart | ||
| 328946X | Caution Label Kit | 1 | No longer available - Call for replacement | |||
| 379085-2 | Instructions Label | 1 | $4.02 | Add to Cart | ||
| 379624 | Product Warranty Card | 1 | $3.72 | Add to Cart |
This is the complete factory parts breakdown for the Chelsea PTO 852, with every part in the manual matched to our live inventory. We stock 111 of the 117 parts above; click any part number to view it, or add it straight to your cart. Click a number on any diagram to jump to that part.
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This Chelsea Illustrated Parts List covering the 852 PTO helps you identify the correct gear sets, shifter kits and service parts for your power take-off before you order.
| Models covered | 852 |
| PTO type | Chelsea 800 Series |
| Document | Illustrated Parts List (Chelsea) |
| Length | 24 pages |
| Format | PDF, free download |
What’s inside
- Gear sets & output shaft assemblies
- Shifter & air-shift control kits
- Mounting gaskets & adapter plates
- Housings & cover assemblies
- Seal, bearing & snap-ring kits
- Application & ratio reference tables
- Exploded views with OEM part numbers
Chelsea parts & units we stock
Pro Gear and Transmission stocks new, remanufactured and good-used parts for Chelsea PTO units:
Not sure exactly which unit you have? Check our identification guides, or Ask an Expert. Send us photos of your data tag and our drivetrain specialists will identify the unit and the exact parts you need. Or call (877) 776-4600.
Browse all Chelsea PTO parts (rebuild kits, seal kits, gears & shift covers) or shop complete Chelsea PTO units.