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Bobcat 320 X320 322 323 320C 320D 320G Final Drive 6667336 6667750 6651892 Excavator Hydraulic Travel Motor
TM02B excavator hydraulic motor
,kubota20 excavator hydraulic motor
,CX27B excavator hydraulic motor
Built for Relentless Earthmoving Cycles. OEM-spec TM01 dual-displacement hydraulic travel motor complete with 37:1 planetary reduction gearbox, engineered for Bobcat 320, X320, 322, 323, 320C, 320D, and 320G mini excavators.
(Optimized for Google Rich Snippets and B2B parts procurement)
| Specification Item | Metric Value |
|---|---|
| OEM Part Numbers | 6667336, 6667750, 6651892 |
| Applicable Bobcat Models | 320, X320, 322, 323, 320C, 320D, 320G |
| Motor Drive Core | TM01 (2-Speed Configuration) |
| Displacement (Hi / Lo) | 6 / 12 mL/rev |
| Peak Output Torque (Hi / Lo) | 700 / 1400 N·m |
| Output Shaft Speed (Hi / Lo) | 90 / 45 rpm |
| Circuit Pressure | 20.6 MPa |
| Inlet Flow Rate | 20 L/min |
| Gearbox Reduction Ratio | 37 : 1 |
| Machine Weight Range | 1.0 – 1.8 Ton |
| Standard / Warranty | ISO9001, 2006/42/EC / 12 Months |
Facing blown motor shaft seals or stubborn track drag while counter-rotating? Mini excavators like the Bobcat 322 and 320 endure intense pivot turns. As internal cylinder blocks wear, excess bypass fluid over-pressurizes the case drain cavity, blowing out the main shaft seal and washing hydraulic oil into the planetary gear hub. Dropping in a brand-new 6667336 / 6667750 final drive restores internal volumetric efficiency, stops cross-contamination, and delivers instant track response.
Uncontrolled case pressure is the #1 killer of replacement travel motors. BELPARTS TM01 drives are manufactured with enlarged internal relief channels and micron-level distributor valve tolerances. This design rapidly channels excess return oil away from rotating groups, preventing thermal expansion binding and ensuring dependable performance during prolonged demolition and trenching.
Q: Can this unit replace older Bobcat drive part number 6651892 directly? A: Yes. 6651892, 6667336, and 6667750 represent consecutive engineering revisions for the Bobcat 320/322 series. This TM01 assembly matches the identical chassis flange bolt circle and drive sprocket interface.
Q: Why is checking the case drain filter essential when installing this new drive? A: If the machine's return line or case drain filter is obstructed, backpressure will exceed casing tolerance and destroy even a brand-new drive. Always inspect or renew the drain line filter before running a replacement motor.
| # | Part No. | Description | Qty |
|---|---|---|---|
| 1 | 6667336 | MOTOR, DRIVE HYD; W/Ref. 2-48 | 1 |
| 2 | 6667750 | MOTR ASSY; Assy. - W/Ref. 3-23 | 1 |
| 3 | 6667751 | HOUSING | 1 |
| 4 | 6667786 | SPOOL | 1 |
| 5 | 6667785 | WASHER; NLA - Order Ref. 54 (7310948 kit) - Was 6667785 | 2 |
| 6 | 6667784 | SPRING | 2 |
| 7 | 6667777 | O-RING; NLA - Order 7308583 plug kit - Was 6667777 | 2 |
| 8 | 6667783 | PLUG; NLA - Order Ref. 50 (7308583 kit) - Was 6667783 | 2 |
| 9 | 6667788 | WASHER | 6 |
| 10 | 6667787 | BOLT | 6 |
| 11 | 6667779 | O-RING; Included W/Ref. 49 & 50 | 1 |
| 12 | 6688111 | PIN; Was 6667780 | 2 |
| 13 | 6667781 | BEARING | 1 |
| 14 | 6667782 | DOWEL PIN | 1 |
| 15 | 6667778 | PISTON, MOTOR TRAVEL | 1 |
| 16 | 6667775 | PLATE; Swash | 1 |
| 17 | 6667776 | DOWEL PIN | 1 |
| 18 | 6667774 | SEAL; Included W/Ref. 49 & 50 | 1 |
| 19 | 6667789 | HOUSING | 1 |
| 20 | 6667772 | SHAFT | 1 |
| 21 | 6667756 | SNAP RING | 2 |
| 22 | 6667773 | BEARING | 1 |
| 23 | 6667762 | RING SNAP | 1 |
| 24 | 6667754 | HOUSING BEARING; W/Floating seal | 1 |
| 25 | 6658401 | O-RING; Incl. W/Ref. 49 & 50 - Was 6667769 | 1 |
| 26 | 6667766 | SNAP RING; NLA - Order Ref. 2 - Was 6667766 | 1 |
| 27 | 6667770 | BEARING | 1 |
| 28 | 6667765 | RING SNAP | 1 |
| 29 | 6667748 | HOUSING | 1 |
| 30 | 6667792 | GEAR ASSEMBLY; W/Ref. 31-36 | 1 |
| 31 | 6693061 | CARRIER, MOTOR DRIVE; NSS - Order Ref. 30 - Was 6693061 | 1 |
| 32 | 6667757 | WASHER | 6 |
| 33 | 6667755 | GEAR; NSS - Order Ref. 30 - Was 6667755 | 3 |
| 34 | 6667760 | ROLLER BEARING; Needle | 57 |
| 35 | 6667758 | WASHER | 6 |
| 36 | 6667759 | SNAP RING | 6 |
| 37 | 6667793 | GEAR ASSEMBLY; W/Ref. 32, 35, 36 & 38-40 | 1 |
| 38 | ---- | CARRIER; NSS - Planetary | 1 |
| 39 | 6667761 | GEAR; NLA - Order Ref. 37 (6667793 Gear Assy.) - Was 6667761 | 3 |
| 40 | 6667763 | ROLLER BEARING; Needle | 57 |
| 41 | 6667753 | GEAR | 1 |
| 42 | 6667764 | RING SNAP | 1 |
| 43 | 6667752 | GEAR | 1 |
| 44 | 6667768 | O-RING; Included. W/Ref. 49 & 50 | 1 |
| 45 | 6667747 | SPACER | 1 |
| 46 | 6667749 | COVER; NLA - Uses Plug W/Aluminum Washer Ref. 47 - Order 6667749 & 6676161 - Was 6667749 | 1 |
| 46 | 6667749 | COVER; Uses Plug & Rubber O-ring | 1 |
| 47 | 6667771 | PLUG; W/Ref. 53 - Uses Aluminum Washer | 2 |
| 47 | 6676161 | PLUG; Uses Rubber O-ring | 1 |
| 48 | 6667767 | RING SNAP | 1 |
| 49 | 6667791 | KIT SEAL; W/Ref. 7, 11, 18, 25 & 44 | x |
| 50 | 6667790 | KIT SEAL; W/Ref. 24 & 49 | x |
| 50 | 7308583 | KIT UNIVERSAL PLUG | 1 |
| 50 | 7310948 | KIT PLUG | 1 |
| 51 | 6671905 | VALVE, PLATE; NLA - Was 6671905 | 1 |
| 52 | 6669597 | SHIM; .007" (0,2mm) thick | x |
| 52 | 6669598 | SHIM; .012" (0,3mm) thick | x |
| 52 | 6669599 | SHIM; .019" (0,5mm) thick | x |
| 53 | 6675272 | WASHER; Aluminum - Use W/Plug 6667771 | 1 |
| 53 | ---- | O - RING; NSS - Order Ref. 47 (6676161 Plug) | 1 |
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