Operation and maintenance manual

Section 230-0040
Body System - Hydraulic Tank
SM 1913 Rev 2 10-03
4
TANK ASSEMBLY
Removal
Numbers in parentheses refer to Fig. 1.
WARNING
To prevent personal injury and property
damage, be sure wheel blocks, blocking
materials and lifting equipment are properly
secured and of adequate capacity to do the job
safely.
1. Position the vehicle in a level work area, ensure
the body is fully lowered, apply the parking brake and
switch off the engine. Turn steering wheel in both
directions several times to relieve any pressure in
the steering circuit. Operate treadle valve
continuously to discharge braking accumulators.
2. Block all road wheels, place the steering lock bar
in the 'Locked' position and the battery master switch
in the 'Off' position.
3. Remove blanking cap from remote drain assembly
(31) on the bottom of hydraulic tank (1). Install a
length of hose on remote drain fitting, open drain
cock and drain hydraulic oil into a suitable container.
Close drain cock, remove hose and reinstall blanking
cap on remote drain assembly (31).
4. Ensure all hydraulic lines connected to hydraulic
tank (1) are identified for ease of installation and, with
suitable containers available to catch leakage,
disconnect hydraulic lines. Fit blanking caps and
plugs to all open lines and fittings.
5. Install a suitable lifting device on lifting eyes of
hydraulic tank (1) and remove locknuts (18), washers
(15, 17 & 20), springs (16) and bolts (14 & 19)
securing hydraulic tank (1) to fender bracket (23) and
frame.
6. Carefully remove hydraulic tank (1) assembly from
the unit to a clean work area for disassembly.
3. Remove blanking cap from remote drain assembly
(31) on the bottom of hydraulic tank (1). Install a
length of hose on remote drain fitting, open drain
cock and drain hydraulic oil into a suitable container.
Close drain cock, remove hose and reinstall blanking
cap on remote drain assembly (31).
4. Remove bolts (5), lockwashers (6), access cover
(4) and gasket (7) from top of hydraulic tank (1).
Discard gasket (7).
5. Unscrew and remove strainer (12) from the inside
of hydraulic tank (1).
WARNING
Splashing liquid. Wear a suitable face shield
when using compressed air to dry hydraulic
tank and components.
6. Clean out the inside of hydraulic tank (1) and
strainer (12) with a suitable solvent and dry with
compressed air.
7. Inspect strainer (12) for damage and replace if
required.
8. Install strainer (12) in hydraulic tank (1) and secure.
9. Place new gasket (7) and access cover (4) on
hydraulic tank (1) and secure with bolts (5) and
lockwashers (6).
10. Remove padlock (33) and filler cap (2) from
hydraulic tank (1) and fill hydraulic tank with hydraulic
oil specified in Section 300-0020, LUBRICATION
SYSTEM. Install filler cap (2) on hydraulic tank (1) and
secure with padlock (33).
11. Place the battery master switch in the 'On' position
and the steering lock bar in the 'Stowed' position,
remove all wheel blocks, start the engine and operate
the steering, braking and body hoist systems to
circulate the oil.
12. Switch off the engine, check for leaks and check
oil level as described under 'Checking Oil Level'.