The Holman ladder rack system, formerly known as Kargo Master, offers a reliable and durable solution for securing ladders and tools on RAM ProMaster vans. Designed for both low and high roof configurations, this ladder rack system provides a streamlined installation process that balances simplicity with structural integrity. The following guide is based on information provided by Upfit Supply and manufacturer specifications, covering key steps, part numbers, and best practices for installation.
Overview of the Holman Ladder Rack System
The Holman ladder rack system is engineered for use with RAM ProMaster 1500, 2500, and 3500 van models. It includes both steel and aluminum variants, with specific models tailored to different roof configurations—low roof and high roof. The system typically includes a mount kit, rack rails, and crossbows, and is designed to be installed using the T-stud mounting points on the van’s roof.
Installation instructions emphasize the importance of following the manufacturer’s guidelines closely, as the process can vary slightly depending on the specific van model and configuration. The system supports drop-down mechanisms on both the driver and passenger sides, allowing for easy access to the ladder and minimizing the vehicle's overall height when not in use.
Preparation for Installation
Before beginning the installation, it is essential to prepare the workspace and ensure all necessary precautions are taken. The following steps are outlined in the provided documentation:
- Choose a safe and level location to park the van. This ensures stability during the installation and prevents potential accidents.
- Engage the parking brake to prevent any movement of the van during the process.
- Check for overhead obstructions both indoors and outdoors. Indoors, ensure there is enough clearance to avoid hitting overhead lights or other fixtures. Outdoors, be mindful of power lines or other objects that might interfere with the installation.
- Inspect the van’s roof for pre-existing damage and ensure the installation area is clean and free of debris.
These preparatory steps are crucial for ensuring a safe and efficient installation process. Proper preparation helps avoid potential delays or damage to the vehicle or equipment.
Step-by-Step Installation Process
The installation process is divided into three main phases: mounting the mount kit, installing the rack rail, and finalizing the crossbow assembly. Each step is outlined below.
Step 1: Install the Mount Kit
The mount kit is specific to the RAM ProMaster van model and is designed to interface with the vehicle’s roof T-stud mounting points. The installation process involves the following steps:
- Locate the forward T-stud mounting locations on the roof and attach the forward mounting feet. These feet will serve as the anchor points for the forward track or rail.
- Attach the forward track or rail to the forward mounting feet. This ensures that the rack is aligned with the van's structure.
- Locate the rear T-stud mounting locations on the roof and attach the rear mounting feet. These provide additional support and stability for the ladder rack system.
It is important to note that installation instructions may vary slightly depending on the van's model and configuration. Therefore, it is recommended to consult the manufacturer's instructions for precise guidance.
Step 2: Install the Rack Rail
The rack rail connects the ladder rack to the mounting brackets and ensures that the ladder is securely held in place. The process involves:
- Adjusting the crossbow’s width to match the width of the van’s mounts. This ensures a snug fit and proper alignment.
- Bolting the crossbow to the mounting brackets. At this stage, the hardware should be snug-tight but not fully tightened, as adjustments may be needed before final tightening.
This step is critical for ensuring that the ladder is held securely and that the system functions as intended. The use of adjustable clamps allows for flexibility in securing ladders of various sizes.
Step 3: Final Assembly and Tightening
After the crossbow is bolted to the mounting brackets, the final step involves tightening all hardware to the manufacturer’s specifications. This ensures that the ladder rack is securely fastened to the van and can support the intended load.
- Tighten all bolts and hardware according to the manufacturer’s torque specifications.
- Verify that the drop-down mechanisms on both the driver and passenger sides operate smoothly.
- Test the ladder rack system by loading and unloading a ladder to ensure it functions as expected.
Proper tightening and testing are essential to ensure the safety and functionality of the ladder rack system.
Part Numbers and Variants
The Holman ladder rack system includes multiple part numbers and variants to accommodate different van configurations and user preferences. The following is a list of commonly referenced part numbers:
Mount Kits
- 4081P – ProMaster Mount Kit for Drop Down Ladder Racks
- 4089P – ProMaster Mount Kit for Cargo Racks
These mount kits provide the necessary hardware and brackets for securing the ladder rack system to the van’s roof.
Steel Ladder Racks
- 4092L – Low Roof - Drop Down Ladder Rack (main rack/passenger side)
- 40963 – Low Roof - Drop Down Ladder Rack (driver side add-on)
- 4099H – High Roof - Drop Down Ladder Rack (main rack/passenger side)
- 40913 – High Roof - Drop Down Ladder Rack (driver side add-on)
- 40890 – Low Roof - Cargo Rack
The steel ladder racks are designed for heavy-duty use and offer a robust solution for transporting ladders and tools.
Aluminum Racks
- 4A93M – Low Roof - Drop Down Ladder Rack (main rack/passenger side)
- 4A96M – Low Roof - Drop Down Ladder Rack (driver side add-on)
- 4A99H – High Roof - Drop Down Ladder Rack (main rack/passenger side)
The aluminum racks provide a lightweight yet durable alternative for users seeking a balance between weight and strength.
Features and Specifications
The Holman ladder rack system includes several features designed to enhance usability, durability, and safety. These features are outlined below:
- Drop-Down Mechanism – Both the driver and passenger sides of the rack include a drop-down mechanism that allows for easy access to the ladder.
- Adjustable Clamps – The clamps can be adjusted to secure ladders of various sizes, ensuring a snug and secure fit.
- Rung Grips – These grips are designed to secure extension ladders of all sizes, preventing them from shifting during transport.
- Rugged Crossbows – The crossbows are designed to sit over the van roof, reducing the overall height of the vehicle and making it easier to load and unload ladders.
- Zinc Epoxy Primer – The system is primed with zinc epoxy for superior rust resistance, ensuring long-term durability.
- Chip-Resistant Powder Coat Finish – The powder coat finish provides an additional layer of protection against wear and tear.
These features collectively contribute to the system’s reliability and ease of use, making it a popular choice for professionals and DIY users alike.
Installation Time and Support
The installation process for the Holman ladder rack system is estimated to take approximately 120 minutes, according to the documentation provided. This estimate assumes that the installer is following the manufacturer’s instructions and has all necessary tools and equipment on hand.
For users who require additional support or have questions during the installation process, Upfit Supply offers assistance. The company recommends contacting their team for guidance on ordering, installation, and troubleshooting. This support can be particularly valuable for users who are unfamiliar with the specific requirements of their van model or the ladder rack system.
Conclusion
The Holman ladder rack system offers a robust and user-friendly solution for securing ladders and tools on RAM ProMaster vans. With a straightforward installation process, multiple part numbers, and a range of features designed for durability and ease of use, this system is well-suited for both professional and DIY users. By following the manufacturer’s instructions carefully and taking the necessary precautions during installation, users can ensure a safe and functional ladder rack system that meets their needs for years to come.