MTD-Style Replacement • 3,500 PSI Maximum • Double Acting • Rebuildable Construction

Replace a worn or leaking cylinder on a compatible log splitter with the WSD31-117 Hydraulic Log Splitter Cylinder. This OEM-grade replacement features a 4.5-inch bore, 24-inch stroke, and trunnion mounting configuration commonly used on select MTD-manufactured log splitters.

The all-welded, double-acting cylinder provides hydraulic power during both extension and retraction. Replaceable internal seals allow the cylinder to be rebuilt after normal wear, helping extend its service life. This version is supplied without the handle or control-valve mounting flange located near the piston end on certain newer splitter configurations.

Key Features & Benefits

• 4.5-Inch Bore
  Provides the large piston area required for compatible full-size hydraulic log splitters.
• 24-Inch Stroke
  Offers the cylinder travel commonly used for processing standard firewood lengths.
• Trunnion-Mount Design
  Replaces compatible cylinders supported by mounting points positioned around the cylinder body.
• Double-Acting Operation
  Hydraulic pressure powers both cylinder extension and retraction.
• 3,500 PSI Maximum Operating Pressure
  Designed for high-pressure log splitter hydraulic systems operating within the published rating.
• All-Welded Construction
  Provides a rugged cylinder body for demanding outdoor power-equipment applications.
• Rebuildable Design
  Internal seals can be replaced rather than requiring disposal of the complete cylinder after seal wear.
• Dual Port Configuration
  Features one JIC-8 male connection and one 1/2-inch NPTF female connection.
• Black Painted Finish
  Helps protect the exterior cylinder body against corrosion and outdoor exposure.
• OEM-Grade MTD Replacement
  Designed to replace compatible cylinders used on select Troy-Bilt, Cub Cadet, Bolens, and MTD log splitters.

Replacement Part Compatibility

The WSD31-117 is designed as an OEM-grade replacement for:

• MTD 918-0769A
• MTD 718-0769
• MTD 718-0769A

Troy-Bilt’s current parts information confirms that part number 918-0769A supersedes both 718-0769 and 718-0769A.

Compatible brands may include select models sold under:

• MTD
• Troy-Bilt
• Cub Cadet
• Bolens

Compatibility must be determined by the original hydraulic-cylinder part number and mounting configuration—not by brand or splitter tonnage alone.

No Handle-Mounting Flange

This model does not include the handle or control-valve support flange near the piston end.

We offer a separate cylinder, model WSD31-118, with a valve-support bracket installed. Compare the existing cylinder carefully before ordering, because the flanged and non-flanged versions may not interchange without changing the valve-mounting arrangement.

Quick Specifications

Package Contents

• One WSD31-117 hydraulic log splitter cylinder

Hydraulic hoses, fittings, mounting hardware, pins, control valve, hydraulic fluid, and seal kits are not listed as included.

Important Fitment Information

This cylinder is not universal. Before ordering, verify:

• Original cylinder part number
• Trunnion location and dimensions
• 4.5-inch bore
• 24-inch stroke
• Hydraulic-port types and locations
• Pin and mounting dimensions
• Fully retracted and extended lengths
• Available installation clearance
• Whether a valve-support flange is required