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Komatsu Backhoe Transmission

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Komatsu Backhoe Transmission parts list
Image Fits Model Description Part # Price Product Details
Komatsu Backhoe Clutch Disc Kit for Transmission Assembly See Details TBD Clutch Disc Kit, Transmission CA0149306
$154.00
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Brake Friction Disc for Komatsu Backhoes -- CA0148795 See Details WB91R-5, WB91R-5EO, WB93R-5, WB93R-5EO, WB97R-5, WB97R-5EO, WB142-5, WB146-5, WB146PS-5, WB156-5, WB1456PS-5 Brake Friction Disc CA0148795
$104.00
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Komatsu Backhoe Brake Piston -- CA0141259 See Details WB140-2, WB140PS-2, WB150-2, WB150PS-2, WB91R-2, WB93R-2, WB97R-2 Brake Piston CA0141259
$155.00
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Komatsu Wheel Loader Transmission Pump - CA0135190 See Details WB140-2, WB140PS-2, WB150-2, WB150AWS-2 & more Transmission Pump CA0135190
$614.00
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Komatsu Wheel Loader Transmission Solenoid Coil -- CA0134126 See Details WB140-2, WB150-2, WB91R-2, WB93R-2 Transmission Solenoid Coil CA0134126
$110.00
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Komatsu Wheel Loader Transmission Control Valve Solenoid Plunger -- CA0134125 See Details WB140-2, WB150-2, WB91R-2, WB93R-2 Transmission Control Valve Solenoid Plunger CA0134125
$210.00
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Komatsu Backhoe Carraro Piston Spring -- CA0132927 See Details WB140-2, WB150-2, WB91R-2, WB93R-2 Carraro Piston Spring CA0132927
$15.00
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Komatsu Wheel Loader Transmission Synchronizer Assembly See Details WB140-2, WB150-2, WB91R-2, WB93R-2 Transmission Synchronizer Assembly CA0132637
$760.00
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Komatsu Wheel Loader Transmission Charge Pump Oil Seal See Details WB140, WB150, WB91, WB93 Transmission Charge Pump Oil Seal CA0131257
$25.00
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Komatsu Wheel Loader Transmission Thrust Washer -- CA0129901 See Details WB140-2, WB140PS-2, WB150-2, WB150AWS-2, WB150PS-2, WB91R-2, WB93R-2, WB97R-2, WB97S-2 Transmission Thrust Washer CA0129901
$20.00
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Komatsu Backhoe Transmission Bearing -- CA0027554 See Details WB140-2, WB150-2, WB91R-2, WB93R-2 Transmission Swing Bearing CA0027554
$75.00
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Komatsu Backhoe Transmission Solenoid Servo Valve, CA0146354 See Details WB91R, WB93R, WB93S, WB140, WB142, WB146, WB150, WB156 Transmission Solenoid Servo Valve CA0146354
$124.00
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Transmission parts for Komatsu backhoe loaders, covering solenoid valves, swing bearings, thrust washers, charge pumps, synchronizer assemblies, control valve solenoids, brake pistons, friction discs, clutch disc kits, and more across the WB series lineup.

Fits Models At A Glance

  • WB91 Series: WB91, WB91R, WB91R-2, WB91R-5, WB91R-5EO
  • WB93 Series: WB93, WB93R, WB93S, WB93R-2, WB93R-5, WB93R-5EO
  • WB97 Series: WB97R-2, WB97S-2, WB97R-5, WB97R-5EO
  • WB140 Series: WB140, WB140-2, WB140PS-2, WB142, WB142-5
  • WB146 Series: WB146, WB146-5, WB146PS-5
  • WB150 Series: WB150, WB150-2, WB150AWS-2, WB150PS-2
  • WB156 Series: WB156, WB156-5, WB1456PS-5

Key Notes

  • Transmission Types: Parts cover Carraro-based transmission assemblies used across WB series backhoe loaders
  • Part Types Available: Solenoid servo valves, swing bearings, thrust washers, charge pump seals, synchronizer assemblies, control valve solenoid plungers and coils, transmission pumps, brake pistons, friction discs, and clutch disc kits
  • Generation Coverage: Fitment spans early WB models through -2 and -5 series generations
  • Brake System: Brake pistons and friction discs are transmission-integrated wet brake components

Why Choose Broken Tractor

  • ✅ Komatsu WB series transmission parts sourced directly
  • ✅ Fast shipping from Baton Rouge, LA and Kimbolton, OH
  • ✅ Knowledgeable staff ready to verify fitment before you order

Frequently Asked Questions

Is the transmission in a Komatsu WB backhoe a Carraro?

Yes, the transmission parts we carry are for the Carraro-based transmission assemblies used across Komatsu WB series backhoe loaders. That includes the WB91, WB93, WB97, WB140, WB142, WB146, WB150 and WB156 lineups, from early models through the -2 and -5 generations. Broken Tractor offers solenoid valves, synchronizer assemblies, thrust washers, pumps, brake pistons, friction discs and clutch disc kits for these transmissions.

What transmission solenoid fits a Komatsu WB93R?

The Transmission Solenoid Servo Valve, SKU CA0146354, is listed to fit the Komatsu WB93R, along with the WB91R, WB93S, WB140, WB142, WB146, WB150 and WB156. For the WB91R-2, WB93R-2, WB140-2 and WB150-2, we also carry the control valve solenoid plunger (CA0134125) and the solenoid coil (CA0134126) as separate parts. Match the part number on your old solenoid to make sure you order the right piece.

Where are the brakes on a Komatsu WB backhoe?

On Komatsu WB series backhoes, the brake pistons and friction discs are wet brake components built into the transmission. We carry the Brake Piston, SKU CA0141259, listed for the WB91R-2, WB93R-2, WB97R-2, WB140-2, WB140PS-2, WB150-2 and WB150PS-2. For -5 models such as the WB91R-5, WB93R-5, WB97R-5, WB142-5, WB146-5 and WB156-5, we offer the Brake Friction Disc, SKU CA0148795.

What transmission pump fits a Komatsu WB140-2?

The Komatsu Transmission Pump, SKU CA0135190, is listed to fit the WB140-2, WB140PS-2, WB150-2 and WB150AWS-2, plus additional WB models. For the earlier WB91, WB93, WB140 and WB150, we carry the Transmission Charge Pump Oil Seal, SKU CA0131257. Compare part numbers before ordering, since pump fitment can differ between machine generations.

Do Komatsu WB backhoe transmission parts interchange between the -2 and -5 series?

Not always, because many transmission parts are listed only for specific generations. For example, the synchronizer assembly (CA0132637) and swing bearing (CA0027554) are listed for the WB91R-2, WB93R-2, WB140-2 and WB150-2, while the brake friction disc (CA0148795) is listed for -5 models. Fitment can depend on model and serial number, so match the part number from your old part or call (800) 909-7060 so our parts team can confirm before you order.

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Product: Category: Komatsu Backhoe Transmission Brand: Head Title: Komatsu Backhoe Transmission Parts | Broken Tractor