TROUBLESHOOTING

Some of the following may help pinpoint the problem:

Pump does not pump:

•Pump has lost its prime from air leak or low level in tank.

•Suction lift is too high.

•Pump is rotating in the wrong direction.

•The strainer may be clogged.

•The bypass valve is open, the pressure relief valve is set too low or the pressure relief valve poppet is stuck open.

•Improper end clearance.

•The pump is worn out.

•Are there any changes in liquid, system or operation that would influence pump or coupling performance, e.g. new liquid, additional lines or process changes?

•Temperature changes either in the liquid or the environment.

•The magnetic coupling is decoupling. Changes in application (temperature, pressure, viscosity, etc.) may require torque beyond coupling capabilities.

Pump starts, then loses its prime:

•The supply tank is empty.

•Liquid is vaporizing in the suction line.

•An air leak or air pocket in the suction line.

Pump is noisy:

•The pump is being starved (viscous liquid cannot get to pump fast enough). Increase the suction pipe size, reduce its length or slow down the pump.

•The pump is cavitating (liquid vaporizing in suction line). Increase suction pipe size or reduce its length.

•Check alignment.

•The magnetic coupling has decoupled. Shut off and restart.

Pump is not delivering up to capacity:

•The pump is starving or cavitating - increase suction pipe size or reduce length or reduce pump speed.

•The strainer is partially clogged.

•An air leak somewhere in suction line.

•The pump may be running too slow. Is motor the correct speed and wired up correctly ?

•The pressure relief valve is set too low, stuck open or has a damaged poppet or seat.

•The bypass line around the pump is partially open.

•The pump is worn out or there is too much end clearance.

Pump takes too much power (stalls motor):

•The liquid is more viscous than the unit is sized to handle.

•The system pressure relief valve is set too high.

•The bushings have frozen up or the liquid has set up in the pump.

SECTION TSM 685.2 ISSUE C

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Viking 855 service manual Troubleshooting
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855 specifications

The Viking 855 is a remarkable addition to the family of high-performance, versatile amphibious vehicles designed for a variety of terrains and demanding environments. Known for its robustness and reliability, the Viking 855 combines advanced engineering with practical functionality, making it an ideal choice for both commercial and recreational applications.

One of the defining features of the Viking 855 is its powerful engine, which provides impressive torque and acceleration. This vehicle is typically equipped with a diesel engine that emphasizes fuel efficiency without sacrificing performance. The engine's design contributes to a lower environmental impact, making the Viking 855 suitable for operations in sensitive areas.

The Viking 855 stands out with its distinctive all-terrain capabilities, allowing it to navigate through mud, snow, sand, and water with ease. Its amphibious nature is enhanced by a well-engineered hull, which not only helps it float but also allows for smooth transitions from land to water and vice versa. This makes the Viking 855 an excellent choice for search and rescue operations, construction sites, and recreational outings where access to challenging terrains is a requirement.

One of the key technologies implemented in the Viking 855 is its hydraulic system, which powers its steering and braking mechanisms. This system ensures precise control and responsiveness, even in difficult conditions. The Viking 855 also features a high ground clearance, advanced suspension, and robust tires, further enhancing its off-road capabilities.

Safety is a crucial feature of the Viking 855, with attention paid to stability and passenger protection. The vehicle typically includes multiple seat belts and reinforced cabins, ensuring that occupants remain secure even in tumultuous environments. Additionally, the Viking 855 is designed to meet industry standards for durability and safety.

The Viking 855 boasts a spacious and modular interior, which can be configured for various uses, from transporting personnel to carrying cargo. This flexibility extends to its load-carrying capabilities, making it a useful vehicle for logistical operations.

In summary, the Viking 855 is an exceptional vehicle that fuses power, efficiency, and adaptability. Its advanced features and capabilities make it a top-tier choice for those needing reliable transport across diverse landscapes, ensuring it remains an attractive option for commercial users and adventure seekers alike.
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