Dynapac DTR75, Operating Instruction, Page: 98 / 120

Protective equipment: n Working clothes
n Safety shoes
n Protective gloves
1. Park the machine safely
Ä
Chapter 6.6 „Parking the machine
in secured condition“ on page 67 .
2. Clean and grease the guide and crank handle.
8.9.8 Checking the hydraulic lines
This work must only be performed by an expert / qualified
person!
1. Park the machine in secured condition
Ä
Chapter 6.6
„Parking the machine in secured condition“ on page 67 .
2. Check all hydraulic lines.
Hydraulic hoses must be immediately replaced if:
n the outer layer is damaged down to the inlay (e.g.
chafing, cuts, cracks),
n embrittlement of the outer layer or formation of cracks in
the hose material,
n the hose shows deformation in pressurized and depres-
surized condition, which do not comply with the genuine
shape of the hydraulic hose (e.g. layer separation, forma-
tion of blisters, crushed spots, buckling),
n leaks on hose, socket or fitting,
n the hydraulic hose has separated from the fitting,
n fittings are damaged or deformed, whereby the function
and strength of the hose - fitting connection is impaired,
n the fitting shows corrosion that impairs both function and
strength,
n incorrect installation (squeezing, shearing or chafing
points),
n paint covered hydraulic hoses (no detection of identifica-
tions or cracks),
n shelf life and service life exceeded.
3. Replace damaged hydraulic hoses immediately, fasten these
properly and avoid chafing.
4. Only operate the machine after it has been repaired.
Grease
Fett
Graisse
Grassa
B-834-0271
Fig. 98
Maintenance – Annually
DTR75 98