Like any tool, a GoJak is purpose built for a specific use case. Here are a few common issues users run in to that can make operation difficult and how to avoid them.
At a fundamental level, friction can significantly hinder the ease of cycling a GoJak. Below are some common causes of excessive friction that can lead to a poor user experience, along with strategies to prevent these issues.
**Exceeding the Rated Tire Tread Width on Classic Design Models**
This issue applies to models such as G4100, G4107, G4500, G4520, G5000, G5211, G6200, and G6313.
**Cause:** When the tire extends beyond the steel rollers of the GoJak and makes contact with the axle frame, it creates additional friction. This contact prevents the tire from rotating freely on the roller bearings. While it may still be possible to lift the tire off the ground, there’s a risk of damaging the foot pedal or distorting the GoJak frame due to the downward pressure exerted by the tire.
**Solution:** After placing the GoJak on the vehicle's tire, verify that the tire is only making contact with the steel rollers. If any part of the tire is resting on the axle frame, adjust the unit accordingly. Always ensure that the tire tread width complies with the specifications outlined on the product label and in the instructions.
**Exceeding the Rated Vehicle or Tire Load**
Each GoJak model is designed to operate under specific weight conditions. While some models may accommodate a wider range of loads, it is crucial never to exceed the recommended weight capacities.
**Cause:** Exceeding these limits introduces excessive force and friction, potentially leading to damage such as a broken pedal or frame.
**Solution:** Always check that the weight of your vehicle is within the specified limits of the particular GoJak model, as indicated on the product label and in the instructions.
**Lack of Maintenance**
Just like any tool, GoJaks perform optimally when they are clean and well-lubricated.
**Cause:** Neglecting to lubricate the pedal assembly, ratchet assembly, and caster assemblies can lead to increased friction, making it difficult to cycle the unit or move the vehicle effectively.
**Solution:** Regularly keep the unit free from dirt and debris. Under normal usage, lubrication should be performed approximately once a month.
- Apply a generous amount of bearing grease to the side and bottom of the inner ratchet.
- **Important:** Do not lubricate the top ratchet teeth.
- For the 2-1/2” (63 mm) steel rollers, apply bearing grease to the roller raceway (2004-52 or 63) to ensure smooth roller movement.
- Avoid using petroleum-based products on plastic roller raceways (e.g., G4107, G4520, G7016), as these can corrode the material over time.
- Lubricate pivot pins (2016/2020) and the pedal mechanism (2011-S) with synthetic lubricating oil, SAE 30 motor oil, light machine oil, or Wurth HHS-K automotive hinge grease.
- Finally, turn the GoJak® over and lubricate the caster ball bearing raceways with synthetic lubricating oil, SAE 30 motor oil, or light machine oil.