Manitowoc 18000 Service Maintenance Manual

Reference Only
18000 SERIVCE/MAINTENANCE MANUAL HYDRAULIC SYSTEM
Manitowoc Published 12-05-17, Control # 035-23 2-7
2
Charge Filters
NOTE: S/N18001082 and newer - Supercharge pump and
charge filters 1 and 2 replaced with accessory
pump and additional return filter.
See Figure 2-3
for the following procedure.
Replace BOTH charge filter elements when system fault
alert comes on and display reads FILTER 1 or FILTER 2 prior
to s/n 18001082.
On crane s/n 18001082 and newer, when system fault alert
comes on and display reads FILTER 1 and FILTER 2 return
filter 2 and return filter 3 elements will need replacing.
1. Stop engine.
2. Clean outside of filter tube (6) in area around cover (2a).
3. Slowly remove vent plug (1) to relieve pressure.
4. Remove cover (2a). Use care not to damage O-rings.
For current production filter, cover (2a) will automatically
lift element (5) out of tube (6).
5. For past production filter, lift element (5) out of tube (6).
6. Carefully inspect interior surface of element for visible
contamination (flow through element is in-to-out).
Normally, no dirt should show. Visible dirt or particles
can be an early warning of system component failure.
7. Discard element.
Do not attempt to clean or reuse element.
Do not operate crane without charge filter elements
installed prior to crane s/n 18001082.
NOTE: S/N18001082 and newer - Supercharge pump and
charge filters 1 and 2 replaced with accessory
pump and additional return filter.
8. Lubricate element O-ring(s) (4) with clean hydraulic oil
and securely install element in tube (6).
9. If necessary, replace O-ring and back-up ring (3) or O-
ring (4) in cover (2a) and lubricate with clean hydraulic
oil.
10. Reinstall cover (2a) until threads bottom out. Securely
hand tighten only.
Disregard steps step 11
through step 14 if you are also
changing oil.
11. Remove vent plug (1) from filter cover (2a).
12. Apply 3 – 5 psi owner supplied air pressure to coupler
(13a, Figure 2-2
) or air valve (13b) on side of hydraulic
tank. Some air will leak from breather.
13. Reinstall and securely tighten vent plug (1) when oil
starts flowing from vent port.
14. Disconnect air supply.
15. Start engine and allow hydraulic system to return to
normal operating pressure and temperature. Check filter
cover (2a) and vent plug (1) for leaks. Tighten as
required to stop leaks.
16. Stop engine, check tank level, and refill as required.
CAUTION
Avoid Hydraulic System Damage!
Original Equipment Manufacturers’ filter elements –
available from Manitowoc – must be used on this crane.
Substituting with any other brand or type filter element is
not allowed.
Filter elements made by other manufacturers may
collapse under pressure. This action will allow unfiltered
oil to be drawn into hydraulic system — pumps, motors,
and valves can be destroyed.
Manitowoc will reject warranty claims for damaged
hydraulic components if proper hydraulic filter elements
are not used.
WARNING
Burn Hazard!
Oil in hydraulic tank may be under pressure and
extremely hot.
Hot oil can escape when you remove filter cover.
Relieve pressure through vent plug (1) in each filter before
removing filter cover.

Manitowoc 18000 Specifications

General

Brand	Manitowoc
Model	18000
Category	Construction Equipment
Language	English