5
MAINTENANCE
1. Inspect hoses and connections daily. Replace damaged components immediately with Porto-power Replacement
Parts only.
2. Tighten connections as needed. Use pipe thread sealing compound when servicing connections.
3. Always use clean, approved hydraulic fluid and change as recommended or sooner if the fluid becomes contaminated
(never exceed 400 hours). Follow pump manufacturers instructions for changing and adding hydraulic fluid. Use
only good quality hydraulic fluid. We recommend Hein-Werner HW93291 or equivalent when using with hand pump
or air pump; Mobil DTE 15M or equivalent when using with electric pump.
Never
use brake fluid, transmission
fluid, turbine oil, motor oil, alcohol, glycerin etc. Use of other than good quality hydraulic oil will void warranty and
damage the ram, pump, hose etc.
Lubrication & Cleaning
1. Any exposed threads (male or female) must be cleaned and lubricated regularly, and protected from damage.
Lubricate with light machine oil.
2. If a ram has been exposed to rain, snow, sand, airborne abrasive, or any corrosive environment, it must be cleaned,
lubricated, and protected immediately after exposure. Daily clean exposed ram with clean cloth dampened with
light machine oil. Protect exposed ram from the elements at all times.
Storage
Rams should be stored in vertical position in a dry, protected area, not exposed to corrosive vapor, dust or other
harmful elements. When a ram has not been used for a period of 4 months, it should be connected to a pump and
fully extended, then retracted a minimum of 5 times. This cycle will lubricate the plunger wall, reducing the possibility
of corrosion and damage there of.
How to remove faulty coupler:
If ram does not retract, secure load by other means. Depressurize pump and hose. Remove the ram from application.
Disconnect and replace with new coupler.
How to bleed air from system:
Place pump at a higher elevation than the hose and ram as shown in figure 5 below. Operate pump to fully extend
and retract the ram 2 or 3 times. The objective is to “float the air bubbles up hill and back to the pump reservoir.
Follow pump instruction manual to bleed the air from pump reservoir. On most pump, pressurized air can be
escaped by simply opening the oil filler plug/screw.
Figure 5 - Illustration to bleed air from system
