This seal kit is compatible with 235, 320, 360, Legacy, and other similar Oildyne 108 / Parker 108 series hydraulic power units, including many marine tilt trim pump applications.  This kit is similar to Parker part number 634412 and includes:

• Qty 1 – Motor O-Ring
• Qty 1 – Shaft Seal
• Qty 2 – Pump O-Ring
• Qty 2 – Spool O-Ring (90A Duro)
• Qty 2 – Poppet Seat O-Ring (90A Duro)
• Qty 2 – Poppet Spring
• Qty 2 – Poppet Valve
• Qty 2 – Hex Plug O-Ring
• Qty 2 – Filter
• Qty 2 – Plastic TRV (Thermal Relief Valve) Balls
• Qty 1 – Large Reservoir O-Ring (“C” Type Plastic Reservoirs)
• Qty 1 – Small Reservoir O-Ring (“C” Type Reservoirs w/ Center Screw)
• Qty 1 – Reservoir Spacer (“C” Type Reservoirs w/ Center Screw W/ .190 pump)
• Qty 1 – Large Reservoir Seal (“A” & “B” Type Metal Reservoirs)
• Qty 1 – Small Reservoir O-Ring (90A Duro, “A” Type Metal Reservoir Screw)
• Qty 1 – Reservoir Sealing Washer (“B” Type Metal Reservoir Screw)
• Qty 1 – Dipstick O-Ring (90A Duro)
• Qty 1 – LB Circuit Ball
• Qty 1 – LB Circuit Eyelet
• Qty 1 – LB Circuit Spring

Attention: As of March 2026, this kit fits “A”, “B”, and “C” type metal and plastic reservoirs!!

Attention: If your 235/320/360/Legacy pump does not have the back pressure circuit it is recommended to add this feature and remove the spool return springs.  As of Jan, 2026 these components are now included in the kit!

This kit includes seals to service one (1) pump, it does not include the pump assembly.  Additional tools and materials are required.  Installation instructions can be downloaded below, these were written for Lancair 235, 320, 360 and Legacy but can be used with some adaptation for other brands/models/applications.  These instructions will be updated periodically and are provided for reference only.

700-0078 REV 2 – 108 PUMP INSTRUCTIONS

This product is designed to fit the Lancair 235, 320, 360 & Legacy models.  Refer to the disclaimer in the manual before purchasing.