CMC PT-35 Tilt and Trim Installation Guide for Outboard Motors up to 35 HP

The CMC PT-35 Tilt and Trim unit is a robust, lightweight solution designed for outboard motors up to 35 horsepower. Its primary purpose is to allow boaters to adjust the angle of their outboard motor to optimize performance, stability, and fuel efficiency. The PT-35 is constructed using 1/4" 6061 extruded aluminum and stainless steel components, ensuring both durability and resistance to corrosion. Weighing only 24 pounds, the unit is compatible with clamp-on or bolt-on motors without the need for an adapter. This article provides a detailed overview of the PT-35’s specifications, installation considerations, and practical guidance based on the information provided in the source documentation.

Overview of the CMC PT-35 Tilt and Trim

The CMC PT-35 Tilt and Trim is an electric hydraulic unit designed to assist in the adjustment of outboard motors. It is suitable for motors up to 35 hp and offers a set-back of 5 1/2 inches, which contributes to improved boat stability and performance. The unit is engineered with a 1/4" 6061 T6 extruded aluminum frame and stainless steel fasteners, ensuring longevity and resistance to wear in marine environments. The electric hydraulic actuator is rated for 7853 pounds of thrust, providing sufficient force to tilt and trim the outboard motor efficiently.

One of the key advantages of the PT-35 is its ability to accommodate both clamp-on and bolt-on motors without the need for an additional adapter. This makes it a versatile option for a wide range of outboard motor configurations. The inside dimension of the motor mounting area is 11 inches, which is an important consideration for users when selecting this unit for their specific motor setup. The documentation explicitly states that users must ensure the maximum width of the clamp mounting feet and/or mounting bolts of the motor does not exceed this 11-inch limit. This is a critical factor in ensuring a proper fit and secure installation.

Key Specifications and Features

The CMC PT-35 is equipped with several key specifications and features that contribute to its functionality and ease of use. These include:

  • Power Rating: Up to 35 horsepower
  • Set Back: 5 1/2 inches
  • Trim and Tilt Angle: 84 degrees
  • Inside Dimension of the Motor Mounting Area: 11 inches
  • Electric Hydraulic Actuator Rating: 7853 pounds of thrust
  • Weight: 24 pounds

These specifications indicate that the PT-35 is designed to handle a wide range of outboard motors, while maintaining a compact and lightweight design. The 84-degree tilt and trim range allows for a broad range of adjustment options, enabling users to fine-tune the motor’s position for optimal performance under varying conditions.

The 11-inch inside dimension of the motor mounting area is an important specification to consider. Users must verify that the mounting feet and bolts of their outboard motor fit within this space. This is particularly relevant for motors with larger clamp-on or bolt-on mounting systems. The documentation does not provide a detailed list of compatible motor models, so users should consult the transom view drawings to determine compatibility.

The unit’s 24-pound weight is a notable design feature, as it reduces the overall weight of the installation and minimizes the strain on the boat’s transom. This is especially beneficial for smaller boats or those with limited structural reinforcement. The use of 6061 T6 extruded aluminum and stainless steel components further enhances the unit’s durability and resistance to environmental factors such as moisture and corrosion.

Installation Considerations

The installation of the CMC PT-35 Tilt and Trim requires careful planning and attention to detail to ensure a secure and functional setup. The following considerations should be taken into account during the installation process:

1. Motor Compatibility

As mentioned earlier, the PT-35 is compatible with clamp-on or bolt-on motors without the need for an adapter. However, it is essential to confirm that the motor’s mounting feet and bolts fit within the 11-inch inside dimension of the PT-35’s motor mounting area. This is a critical factor in ensuring a proper fit and preventing potential issues such as misalignment or instability.

Users are advised to refer to the transom view drawings provided by the manufacturer to determine compatibility. These drawings typically provide detailed measurements and visual representations of the motor’s mounting dimensions. In the absence of such drawings, users should measure their motor’s mounting feet and bolts to ensure they do not exceed the 11-inch limit.

2. Mounting Hardware

The PT-35 does not include mounting bolts as part of its package. Therefore, users must ensure they have the appropriate hardware for securing the unit to the transom and for attaching the outboard motor. It is recommended to use high-quality stainless steel bolts and nuts to prevent corrosion and ensure long-term durability. Users should also consider using lock washers or thread-locking compounds to prevent loosening due to vibration or movement.

3. Electrical Connections

The PT-35 is an electric hydraulic unit, which requires a power source and proper electrical connections for operation. The documentation does not provide detailed information on the electrical requirements or wiring diagrams, which is a limitation in terms of installation guidance. However, users should ensure that the unit is connected to a reliable power source, such as the boat’s battery, and that all electrical connections are properly insulated and secured to prevent short circuits or water damage.

It is also important to verify that the electrical system is compatible with the PT-35’s power requirements. The unit’s electric hydraulic actuator is rated for 7853 pounds of thrust, which suggests that it requires a sufficient power supply to operate efficiently. Users should consult the manufacturer’s documentation or a qualified marine electrician for assistance with the electrical installation.

4. Hydraulic System Maintenance

The hydraulic system of the PT-35 is a critical component that requires regular maintenance to ensure smooth and reliable operation. Users should inspect the hydraulic lines and fittings for signs of wear, leakage, or damage. If any issues are detected, the affected components should be replaced or repaired promptly to prevent further damage.

The documentation does not specify the type of hydraulic fluid or the maintenance schedule for the PT-35, which is a notable gap in the information provided. However, users should follow standard maintenance practices for hydraulic systems, such as checking fluid levels, replacing filters, and inspecting for contamination or degradation.

5. Alignment and Adjustment

Proper alignment of the PT-35 is essential for optimal performance and to prevent stress on the motor or transom. The unit should be installed in a position that allows for full range of motion in both the tilt and trim directions. Users should also ensure that the motor is aligned with the centerline of the boat to prevent lateral stress or uneven weight distribution.

Once the PT-35 is installed, users should test the unit to ensure that it operates smoothly and without resistance. If any issues are encountered, such as binding or uneven movement, the installation should be reviewed and adjusted as necessary.

Practical Benefits of the CMC PT-35

The CMC PT-35 Tilt and Trim offers several practical benefits that make it a valuable addition to outboard motor setups. These include:

  • Improved Boat Handling: The ability to adjust the motor’s angle allows users to optimize the boat’s performance under different conditions. For example, trimming the motor upward can reduce drag and increase speed, while tilting the motor downward can improve maneuverability in shallow water.
  • Lower Fuel Consumption: By optimizing the motor’s angle, users can reduce engine load and improve fuel efficiency. This is particularly beneficial for long trips or when operating in conditions that require frequent adjustments.
  • Reduced Physical Strain: The electric hydraulic design eliminates the need for manual lifting or adjusting, reducing the physical strain on the user. This is especially advantageous in situations where frequent adjustments are required or when the motor is particularly heavy.
  • Enhanced Stability and Safety: The 5 1/2-inch set back contributes to improved boat stability, which can enhance overall safety and comfort during operation.

These benefits highlight the value of the PT-35 as a practical and efficient solution for outboard motor tilt and trim applications. The unit’s lightweight design and durable construction further enhance its appeal, making it a suitable choice for a wide range of boating activities.

Limitations and Considerations

While the CMC PT-35 offers several advantages, there are also certain limitations and considerations that users should be aware of:

  • Compatibility Limitations: The 11-inch inside dimension of the motor mounting area may limit compatibility with certain outboard motor models. Users should verify that their motor fits within this space before purchasing the PT-35.
  • Lack of Detailed Installation Instructions: The documentation does not provide detailed installation instructions or wiring diagrams, which may make the installation process more challenging for users without prior experience.
  • Absence of Maintenance Guidelines: The documentation does not specify the type of hydraulic fluid or the maintenance schedule for the PT-35. This may require users to rely on general maintenance practices or consult with a qualified technician.
  • No Included Mounting Hardware: The PT-35 does not include mounting bolts or other hardware, so users must ensure they have the appropriate components for installation.

These limitations highlight the importance of careful planning and preparation when installing the PT-35. Users are encouraged to review the available documentation thoroughly and seek assistance from a qualified marine technician if needed.

Conclusion

The CMC PT-35 Tilt and Trim is a well-designed and versatile solution for outboard motors up to 35 horsepower. Its lightweight construction, durable materials, and electric hydraulic actuator provide a reliable and efficient means of adjusting the motor’s angle. The unit’s 5 1/2-inch set back contributes to improved boat stability and performance, while the 24-pound weight helps to minimize strain on the transom. The compatibility with clamp-on or bolt-on motors without the need for an adapter further enhances its appeal.

Despite its many advantages, users should be aware of the unit’s limitations, including compatibility constraints, lack of detailed installation instructions, and the absence of included mounting hardware. Proper planning, careful measurement, and attention to detail are essential for a successful installation. Users are encouraged to consult the manufacturer’s documentation and seek assistance from a qualified marine technician if needed.

Overall, the CMC PT-35 Tilt and Trim is a valuable addition to outboard motor setups, offering improved handling, fuel efficiency, and ease of use. Its practical benefits and robust design make it a suitable choice for a wide range of boating applications.

Sources

  1. CMC PT-35 Tilt & Trim, up to 35 HP
  2. CMC Catalog 2008-2009

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