The Qwik Kit King Pin installation process involves determining the need for replacement, disassembly of wheel end components, installation of the new king pin and associated shims, and final assembly with grease and torque specifications. The documentation details a general procedure, noting that variations may require adaptation based on the specific king pin set being installed. Safety glasses are recommended throughout the process.
Determining King Pin Condition
The initial step in the Qwik Kit King Pin installation process is to assess whether the existing king pins require replacement. This assessment is performed using a dial indicator. The dial indicator is magnetically mounted to the top of the axle, positioned to rest on the spindle eye. A pry bar is then used under the tire to apply upward and downward force. The amount of needle swing in the dial indicator is measured during this process. According to the provided instructions, if the movement exceeds 0.010”, the king pin should be replaced. Minimal movement is expected during this test.
Disassembly of Wheel End and King Pins
The documentation outlines the need to disassemble the wheel end to access the king pins. This involves removing the wheel, brake assembly, and backing plate. The specific steps for disassembly beyond these components are not detailed in the provided source material.
Qwik Kit Installation Procedure
The core of the installation process involves the use of a Qwik Kit. The instructions detail several steps to ensure proper fit and alignment. First, the king pin is inserted into both the top and bottom bores to check for fit. The pin is then slid through both bores to test spindle alignment. If the king pin does not fully engage the opposite spindle eye, the spindle itself should be replaced.
Shim Pack Management
A critical aspect of the installation involves managing the shim pack. The documentation advises counting the shims removed from the old king pins, as these will be used as a starting point for determining the new shim stack thickness. A 0.005” increase to the prior shim stack thickness is recommended as an initial adjustment. The documentation also provides guidance on determining the correct shim thickness by feel.
Bearing Installation and Lubrication
Prior to installation, the bearing should be packed with grease (referencing Tech Tip # 577 0033 for bearing information). The bearing is installed with the open side facing down. The instructions provide a tactile method for verifying correct shim stack thickness during bearing installation. If the bearing can be installed with only the palm of the hand, additional 0.005” shims should be added to the stack. Conversely, if the bearing cannot be installed by hand, 0.005” of shims should be removed.
King Pin and Lock Pin Installation
The king pin is inserted into the top spindle eye and slid through until approximately ½ inch of the pin protrudes from the bottom. To aid installation and prevent injury, a crease is recommended in the last shim of the pack before placing the shims on the king pin. The spindle is then lifted and placed on the axle, allowing the king pin to drop into the hole. The king pin is pushed down until it is flush with the bottom of the axle.
Following king pin installation, the lock pin is installed, ensuring the flat side of the lock pin faces the king pin. Nuts and washers are then installed and tightened to a typical torque specification of 30-45 ft.lb. (referencing Tech Tip 01 577 0050 for torque specifications). Finally, top and bottom plates are installed and tightened.
Final Steps: Grease Application
The final step outlined in the documentation is to add grease. The specific method or location for grease application beyond the initial bearing packing is not detailed.
Safety Precautions
The documentation explicitly states that safety glasses should be worn throughout the entire installation process “for your protection.”
Adapting to King Pin Variations
The documentation acknowledges that there are “many variations of king pins.” As such, the provided instructions are presented as a general procedure and may require adaptation based on the specific king pin set being installed.
Conclusion
The Qwik Kit King Pin installation process requires careful attention to detail, particularly regarding shim pack management and bearing installation. Proper assessment of the existing king pin condition, adherence to torque specifications, and the use of safety glasses are crucial for a successful installation. The documentation emphasizes the need to adapt the general procedure to accommodate variations in king pin design.