530-345-4685 | 1431 West 5th St. Chico, CA 95928 info@rdhs.com

Tech Tips

Filtration

Hydraulic Filtration and Contamination All hydraulic systems have a common need for protection from harmful contaminants. Good contamination control means cost effective filtration. Filtering out the particles large enough to be harmful to your system prevents damage...

Leak Testing Hydraulic Cylinders

Broken and Bent Ram Shafts More often than not when the threaded stub (which holds the piston in place) breaks, we can install a larger grade (8) eight bolt to hold the piston to the chromed shaft. Great savings can be realized using this repair method. P.S.: We have...

Trailer Safety

Safety Facts and Suggestions for Trailer Loads or Towing 1. Make sure you always have an emergency road side kit, extra light bulbs, and fuses. Also, always have a working jack. 2. Always follow recommended inflation pressures. A good rule of thumb for safe tire tread...

Synchronizing Cylinders

The following is an interesting article about a problem that has a great potential for damaging equipment that utilizes dual hydraulic cylinders that must act together. Problem: A dump truck owner noticed that his truck bed wasn't raising evenly. One cylinder was not...

Starting New Pumps

Starting Up New Pumps and Hydrostatic Transmissions for the First Time For long life and top efficiency, contaminants must be removed from your hydraulic system. Clean (flush) all hoses, fittings, reservoirs and components with clean, high flash point (hard to ignite)...

Restarting a Hydraulic System

Restarting A Hydraulic System That Has Been Repaired After A Failure. Important questions to ask and answer before restarting a repaired system. Has the cause of the failure been identified and repaired? If NO, investigate further. Too often components are replaced...

Pump Selection

Pumps: The "muscle" of a fluid-power system; converting mechanical energy to fluid form. There are six basic considerations in evaluating and selecting a hydraulic pump. They include these points: Pressure rating: Based on the limitations of the pump from damage and...

Piston Type Pumps

Starting Up New Pumps and Hydrostatic Transmissions for the First Time For long life and top efficiency, contaminants must be removed from your hydraulic system. Clean (flush) all hoses, fittings, reservoirs and components with clean, high flash point (hard to ignite)...

Overheated Bearings

The most common reason for an overheated pillow block bearing is over-packing it with grease. The churning lubricant produces heat. As speed increases, so does the heat. Adding more grease only worsens the problem, and, you run the risk of blowing out a seal. Excess...

Noise

Ever wonder what that noise in your hydraulic system is? Here are a few possibilities to consider: Cavitation. Check the pump for clogged or blocked air vents and intake lines. Follow manufacturer's recommended viscosity for the pump. Dirty Filter. Periodically check...

Leak-Free Connections

Ever notice how an oil leak attracts dirt? As the leaking continues the oily mess grows. One of the primary sources for leaks is a poor fitting connection. Leak-free hydraulics has always been desired but few know that the solution has been available for some time....

Hydraulic Troubleshooting

Occasionally we are all frustrated with our apparent lack of knowledge or understanding of a particular operating system. In truth, every one of us who own and operate equipment can understand our hydraulic systems we use if only we had time to learn and dive into...

Hydraulic Pump Installation

The number one enemy of hydraulic systems is contamination. When replacing a pump, all filters should be replaced or cleaned and the system oil checked for cleanliness. Replace dirty or contaminated oil. To not do so will increase wear on all components of the...

Hydraulic Hose Installation

Hydraulic hose failures take several forms: failure of the cover and wire reinforcement, pulling loose from the fittings, bursting from over-pressures, and abrasion. When selecting hose for use on an application, itís essential to know the system pressure, including...

Hydraulic Accumulators

Accumulators and their functions may be the least understood component of a hydraulic circuit. Versatile, ruggedly built for durability, long life and simple in design, hydraulic accumulators are able to solve numerous problems or enhance your hydraulic system. Some...

Hours

Mon-Fri: 7am-5pm
Sat: 7am-12 noon
Sun: Closed

Winter Hrs (Nov thru Mar)

Mon-Fri: 8am-5pm