Manitowoc 14000 Service Maintenance Manual

Reference Only
Manitowoc Published 09-05-14, Control # 226-02 2-7
14000 SERVICE MANUAL HYDRAULIC SYSTEM
2
Changing Oil
See Figure 2-1 for following procedure.
Drain and refill the hydraulic system every 1,000 hours or
semiannually, whichever comes first, unless an alternate
interval has been established through an oil analysis
program.
1. Operate crane until hydraulic oil is at normal operating
temperature. This will suspend impurities so they can be
removed with the oil.
2. Stop engine. Lock out/Tag out the crane.
3. Open the air valve (4) to relieve pressure in tank.
4. Attach a rubber hose to pipe on drain valve (7) and insert
end of hose into a suitable container to catch hydraulic
oil. See Section 9 or Lubrication Folio 2129 for hydraulic
system capacity.
5. Open drain valve (7) and drain tank completely.
6. Clean all dirt from stand pipe cap (2a) and remove cap.
Take care to prevent dust and wind-blown dirt from
entering tank while stand pipe cap is off.
7. Flush out any sediment inside tank.
8. Carefully inspect suction filter (inside tank) for damaged
or clogged holes and for sludge, gum, or lacquer
formation. If necessary, clean as follows:
a. Remove cover (5) from bottom of tank.
b. Remove suction filter from inside tank.
c. Soak in clean, nonflammable solvent. Flush from
inside out. Discard if damaged.
d. Securely reinstall suction filter.
9. Using new seals, securely fasten access covers to tank.
10. Replace desiccant breather when indicated (see
Replacing Desiccant Breather Cartridge
in this section).
11. Replace return filter element (1) as instructed earlier in
this section.
12. Fully close drain valve (7) and remove rubber hose.
13. If power-filling, clean and then remove the return line
cap (8) from return manifold. This will allow air to
escape.
14. Fill through stand pipe (2a) or through power fill coupling
(2b). Use new hydraulic oil filtered through a 10-
micron filter.
15. Fill to Cold Full level (9) on hydraulic tank gauge.
16. Fill pump cases at return line cap (8) in return line until
manifold will not take any more oil. Use new hydraulic
oil filtered through a 10-micron filter.
17. Install and securely tighten return line cap (8) as soon as
oil appears.
18. Check for hydraulic leaks and correct if found.
19. Fill hydraulic tank to FULL COLD LEVEL—90 to 94%—
while watching hydraulic tank display on information
screen. Use proper hydraulic oil (see Section 9 or
Lubrication Folio 2129).
Do not fill tank to 100%. Oil will flow out of breather
when the system heats up.
20. Check tank level and refill as required.
21. Start engine and allow hydraulic system to return to
normal operating pressure and temperature. Check for
leaks and tighten parts as required.
22. Stop engine, check tank level, and refill as required.
NOTE: If the hydraulic system was extremely dirty (gum or
lacquer formation on parts indicated by erratic,
jerky, or sluggish operation) repeat Changing Oil
procedure after 48 hours of operation.
CAUTION
In the Event of a Catastrophic Failure of a
Hydraulic Component
Contact your Manitowoc dealer or the Manitowoc Crane
Care Lattice Team if your crane’s hydraulic system has
experienced a catastrophic failure. To avoid additional
damage, the process of removing debris and
contaminants must be guided or performed by
experienced crane technicians.
For general instructions following a catastrophic failure,
see Manitowoc Service Bulletin W007-009.
WARNING
Burn Hazard
Oil in hydraulic tank may be under pressure and
extremely hot.
Hot oil can escape when you remove the stand pipe plug,
filter cover, or breather.
Relieve pressure through air valve on tank before
servicing.
CAUTION
Avoid Tank Damage
When filling through power fill coupling, open air valve (4)
on top of tank to release pressure.

Manitowoc 14000 Specifications

General

Brand	Manitowoc
Model	14000
Category	Construction Equipment
Language	English