General Safety Instructions
Hydraulic fluid may be hot if system has been in operation. Allow system to cool
before performing maintenance or injury to personnel may result.
Hydraulic fluid may be under pressure. Use caution when disconnecting hydraulic
components or injury to personnel may result.
Hydraulic fluid may be absorbed through the skin. Wear long sleeves, gloves, and
goggles or face shield. If hydraulic fluid gets into the eyes, flush them immediately
with water and seek medical attention. If hydraulic fluid gets on skin, thoroughly
wash with soap and water. Wash hands thoroughly prior to eating or smoking.
Throughout this procedure, all fittings and openings must be capped or plugged
immediately after opening to prevent dirt and moisture or foreign material from
entering the hydraulic system or damage to equipment may result.
To avoid premature failure of hydraulic components or system failure, bleeding of
the hydraulic system must be performed if one of the following conditions exists:
A system leak, failure, maintenance, or repair that has drained fluid from the
system or allowed air to enter the system.
Any symptom occurs that would be caused by air in the system such as steering
off tracking, suspension, or gooseneck drop.
This bleed procedure can be done completely in the order listed. If a specific
symptom or failure is isolated to one area, then this procedure can be done in
parts. Complete parts necessary to bleed the hydraulic system and remove all air.
STEERING CIRCUIT BLEEDING
Prior to bleeding steering cylinders, all four support legs must be lowered and
support the platform or injury to personnel may result.
Release brakes on semitrailer by pushing inward on brake release valve (para. 2-8).