KNOB, M6 THREAD, ALUMINUM

BlueLight Propulsion Unit Adjustment Knob — Replacement Drive Wheel Tension Control Knob

The BlueLight Propulsion Unit Adjustment Knob is a replacement component designed for BlueLight propulsion units. Attached to the propulsion unit's threaded adjustment stud, this knob allows operators to adjust the tension applied to the drive wheel assembly that grips and pulls the light head through the liner during curing operations.

By tightening the knob, operators can increase the tension between the propulsion unit's drive wheels, improving traction and pullback force for longer installations, complex pipe configurations, and applications with multiple bends. Proper drive wheel engagement helps maintain consistent light head movement and supports reliable curing performance throughout the installation.

Ideal for replacing damaged, worn, or missing knobs, this replacement part helps restore proper adjustment capability and maintain dependable propulsion unit operation in the field.