stertil ST1175, Service Manual

Page: 55 / 108

Operation & Service Manual (VA) 55 ST1175
5. When the oil level is too low, always perform the leak checks described later in this
chapter.
6. Inspection of all safety features.
7. Check for leakage from the cylinders. If oil is leaking from one of the cylinders, the
seals and the guide rings must be replaced.
8. Check for leakage from the hydraulic system. If the column lift sinks back down by
more than 1/4" per hour, then the system must be inspected for external (hoses,
couplings) and internal (valves) leakage. Defective parts must be replaced.
9. General inspection for damage. If cracks have appeared in structural components,
then the parts in question must be replaced. Immediately repair or replace all parts
which could cause hazardous situations.
10. Perform all lubrication tasks set out in section Lubrication instructions (on page
55).
For additional details, see chapter Troubleshooting (on page 67).
7.6 Regular preventive maintenance procedures
7.6.1 Lubrication instructions
The vehicle lifts must be serviced regularly in accordance with the lubrication
instructions.
Lubrication instructions
Maintenance
tasks
Description Monthly
Per year
(technical
service)
Every 2
years
(technical
service)
Cylinder Lubricate dry
piston-rod
(machine oil). x
Check oil level in
tank Top up (only with
column lifts fully
lowered). x
Various pivot
points Lubricate. x
Hydraulic oil in the
tank Replace; see
section Hydraulic
oil. x
Suction filter Clean or replace. x
Safety lock Check and clean
if required. x