Bil-Jax Wheelchair XLB-4232 DC 사용자 설명서

Hydraulic system maintenance varies with equipment use and the environment in which 
the boom lift is used. Constant attention to keep the oil clean and the reservoir properly 
filled will help prevent possible damage to the system. Hydraulic diagrams are provided 
at the end of this section for general reference. 

Check the hydraulic hose and fittings for leaks and damage daily. Tighten or replace as 
necessary to prevent hydraulic oil loss.  

The oil level sight gage should be checked with the boom down and the trailer on a level 
surface. The reservoir is originally filled with AW-46, a high-grade, non-foaming 
hydraulic oil designed for temperatures as low as -20

°

F (-33

°

C).  

Use Dextron Automatic Transmission Fluid Type A for low temperatures reaching -40

°

F 

(-40

°

C). If either oil is not available, a good grade SAE 10W hydraulic oil may be used 

where the low temperature is above 32

°

F (0

°

C). SAE 5W hydraulic oil may be used 

where low temperatures reaching 0

°

F (-18

°

C).  

Do not mix hydraulic oils. Clean the reservoir sump strainer and replace the hydraulic oil 
once a year or whenever the oil becomes contaminated. 

Delayed response or sporadic boom lift motions may indicate air in the lift cylinders. Use 
the following procedure to bleed entrapped air from the hydraulic system. 

1.  Fill the reservoir with the proper hydraulic fluid. Replace, but do not tighten the 

reservoir fill cap. 

2.  Fully raise and lower the boom to return oil with entrapped air to the reservoir. 

3.  Allow several minutes for air to escape the reservoir oil.  

4.  Repeat steps 1 through 3 as needed. Add oil slowly and only when the boom is 

lowered to prevent adding more air to the system.