Ritchie 77940

Ritchie Engineering Co., Inc. / YELLOW JACKET 77940 Max-Flow Combination Oil Pump

Instruction Manual

Product Overview

The YELLOW JACKET 77940 Max-Flow Combination Oil Pump is designed for efficient and clean oil management in various systems. It facilitates both the removal of oil for recovery and conversion, and the addition of new oil to existing systems. This pump is engineered for durability and ease of use, featuring a comfort-grip handle and a universal stopper for compatibility with common oil container sizes.

Ritchie Engineering YELLOW JACKET 77940 Max-Flow Combination Oil Pump

Image of the YELLOW JACKET 77940 Max-Flow Combination Oil Pump, showing its long black body, comfort-grip handle, and connection point. This pump is designed for efficient oil transfer.

Setup

  1. Unpack Components: Carefully remove the oil pump, suction transfer hose, and any included fittings from the packaging.
  2. Attach Suction Hose: Connect the suction transfer hose to the bottom of the pump unit. Ensure a secure and leak-free connection.
  3. Prepare Oil Container: The universal stopper on the pump automatically adjusts to standard openings in 1, 2-1/2, and 5-gallon oil containers. Insert the pump into the desired oil container, ensuring the stopper creates a seal.
  4. Connect to System (for oil removal/addition): Depending on the application, connect the appropriate fitting from the suction hose to the system from which oil will be removed or to which oil will be added.

Operating Instructions

The Max-Flow Combination Oil Pump is designed for both oil removal and addition. It pumps approximately 2.6 oz. (78 ml) per stroke and can pump against pressures up to 200 psi.

Maintenance

Proper maintenance ensures the longevity and optimal performance of your oil pump.

Troubleshooting

ProblemPossible CauseSolution
Pump not drawing oil
  • Suction hose not fully submerged in oil.
  • Air leak in hose or fittings.
  • Pump mechanism clogged or damaged.
  • Ensure hose end is below oil level.
  • Check all connections for tightness; replace worn seals or hose.
  • Disassemble and clean pump, inspect for damage.
Low pumping efficiency/pressure
  • Partial clog in hose or pump.
  • Worn internal pump seals.
  • Operating against excessive back pressure.
  • Clean hose and pump thoroughly.
  • Contact manufacturer for replacement parts or service.
  • Ensure system pressure is within pump's operating limits (max 200 psi).
Oil leakage
  • Loose fittings.
  • Damaged hose or seals.
  • Tighten all connections.
  • Inspect and replace damaged hose or seals.

Specifications

Warranty and Support

Specific warranty information for the YELLOW JACKET 77940 Max-Flow Combination Oil Pump is not provided in this manual. For details regarding warranty coverage, technical support, or replacement parts, please contact Ritchie Engineering Co., Inc. / Yellow Jacket directly through their official website or customer service channels.

You may find contact information on the product packaging or by visiting the Yellow Jacket website.