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4. Disconnect hydraulic lines. Plug lines to prevent
possible contamination to the system. Tag each
line at removal for proper identification during
installation.
5. Attach a lifting device to the hydraulic tank.
6. Remove the cap screws and lockwashers
securing the hydraulic tank mount caps to the
frame.
7. Move hydraulic tank to a clean work area for
disassembly or repair.
Installation
1. Install hydraulic tank and secure mount caps
with cap screws and lockwashers. Tighten to
615 N·m (454 ft lbs) torque.
2. Uncap hydraulic lines and attach to the proper
connections.
3. Replace breather filters if required.
4. Fill the hydraulic tank with clean, filtered C-4
hydraulic oil. Refer to "Filling Instructions".
5. Bleed all air from hydraulic lines.
6. Bleed trapped air inside steering pump. Refer to
Pump Pressure Setting, Section L for air bleed-
ing procedure.
NOTE: If trapped air is not bled from steering pump,
possible pump damage and no output may result.
L03039
HYDRAULIC TANK STRAINERS
Removal
Prior to opening the hydraulic tank, allow at least
90 seconds for the accumulator to bleed down
after engine shutdown with the key switch OFF.
1. Stop the engine and turn the key switch OFF
and wait at least 90 seconds.
NOTE: If the oil is to be reused, clean containers
must be used with a filtering (3-micron) system
available for refill.
2. Be prepared to contain approximately 901 l
(238 gal.) of hydraulic oil. Drain hydraulic oil
from tank at port on bottom of tank (2, Figure 3-
17).
3. Disconnect hoist pump supply hoses at the
tank. (3).
4. Remove the 22 cap screws and lockwashers
(4) securing cover to the hydraulic tank.
Remove and discard gasket.
5. Remove cap screws and lockwashers securing
suction strainers. Remove suction strainers.
Inspect and Clean
NOTE: Inspect the strainers thoroughly for metallic
particles and varnish build up (if oil has been
overheated). The quantity and size of any particles
may be an indication of excessive wear of
components in the hydraulic system.
Hydraulic Component Repair
L3-17
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