Dynapac DTR75D, Operating Instruction

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6. Check the seal ring for damage, change if necessary.
7.
NOTICE!
Danger of engine damage!
– Prevent dirt from getting into the air
intake opening.
– Do not clean the air filter housing with
compressed air.
Clean the filter housing with a clean, lint-free cloth.
8. Replace the air filter.
9. Insert the air filter carefully into the filter housing and fasten it
with the wing nut.
10.
NOTICE!
Danger of engine damage!
– Ensure correct fit of cover and seal.
Close the cap.
8.8.5 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 72 .
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.
Fig. 111
Maintenance – Annually
DTR75D 98