7 - MAINTENANCE
Hydraulic hoses, tubes, and fittings
WARNING
Hot liquid under pressure!
If leaks are detected in the hydraulic hoses, tubes, or fittings during the inspection, carry out the
following before you perform any maintenance activities:
1. Stop the engine.
2. Release the hydraulic system pressure.
Failure to comply could result in death or serious injury.
W1334A
Check the hydraulic system lines for possible leaks.
Repair all hydraulic oil leaks promptly to avoid loss of
oil and possible damage and dirt entry into the system.
When checking for hydraulic leaks, start and operate
the engine at
1200 - 1500 RPM
.
Remove and install new hoses immediately, if they are
severely damaged by a cut or scrape, swollen at the
fittings, or leaking.
If you replace a hydraulic hose or tube, use the following
procedure:
1. Loosen the fittings
(1)
and remove the hose or tube,
then remove and discard the O-ring seal
(2)
.
Immerse the new O-ring into clean hydraulic oil before
assembly.
2. Install the new O-ring
(2)
into the fitting
(1)
and if nec-
essary, retain in position using
P
ETROLEUM JELLY
. As-
semble the new hose or tube and tighten the fitting fin-
ger-tight, while holding the tube or hose to prevent it
from turning. The tube’s or hose’s turning could dam-
age the O-ring.
3. Using two suitable wrenches, tighten the fittings to
specification.
NOTICE:
When replacing or assembling a pipe or hose,
make sure that all elements are perfectly clean and free
from any trace of dirt. Failure to ensure absolute cleanli-
ness will result in the hose/pipe leaking after installation or
possible damage to other hydraulic system components.
LEEN11T0359AA
1
To ensure a leak free joint is obtained, it is important
that the fittings are not over torqued or under torqued.
When replacing a hose, it is necessary to bleed air from
the system. For this purpose, let the engine run at
1200
- 1500 RPM
, contemporarily actuating the loader and
backhoe attachment controls for
15 min
or until air is
bled from the system.
LEEN11T0360AA
2
7-19
Summary of Contents for 580ST
Page 8: ......
Page 24: ...1 GENERAL INFORMATION 1 16 ...
Page 49: ...2 SAFETY INFORMATION Extend telescopic dipper If fitted MOLI12LBB0092AA 24 2 25 ...
Page 101: ...3 CONTROLS AND INSTRUMENTS Setup menu LEIL12TLB00006I 1 3 39 ...
Page 144: ...3 CONTROLS AND INSTRUMENTS 3 82 ...
Page 164: ...4 OPERATING INSTRUCTIONS 4 20 ...
Page 166: ...5 TRANSPORT OPERATIONS RAIL14TLB1181GA 1 5 2 ...
Page 222: ...6 WORKING OPERATIONS 6 44 ...
Page 247: ...7 MAINTENANCE Fuel tank capacity 145 L 38 30 US gal 2WS 124 L 32 76 US gal 4WS 7 25 ...
Page 347: ...7 MAINTENANCE Fuses and relays Powershift cab 2WS MOLI12LBB0491CA 7 7 125 ...
Page 349: ...7 MAINTENANCE Fuses and relays Powershift cab 4WS MOLI12LBB0492CA 8 7 127 ...
Page 390: ...8 TROUBLESHOOTING 8 28 ...
Page 418: ...9 SPECIFICATIONS 4WS LEEN11T0039FA 2 9 28 ...
Page 420: ...9 SPECIFICATIONS 2WS 590ST LEEN11T0041FA 5 4WS 695ST LEEN11T0042FA 6 9 30 ...
Page 433: ......