Terex TS14G, Maintenance Manual

Page: 230 / 376

Section 235-0040
Bowl Hydraulic System - Hydraulic Tank
SM 2279 04-04
2
Checking Oil Level
1. Operate the bowl hydraulic and steering systems
several times to bring the oil to correct operating
temperature.
2. Position the vehicle in a level work area, apply the
parking brake and switch off the engine. Operate
steering right and left several times to relieve
pressure in the steering system.
3. Check oil level and add oil if low. Oil should show
in the bottom of top sight gauge (20). If oil is required,
remove filler cap (2) and fill tank assembly (1) with
hydraulic oil as specified in Section 300-0020,
LUBRICATION SYSTEM. Install filler cap (2) on filler
neck assembly.
Replacing Hydraulic Oil
The hydraulic tank should be drained, cleaned and
hydraulic oil changed every 1 800 hours. Refer to
Section 300-0020, LUBRICATION SYSTEM, for
hydraulic oil used in the system.
Replacing Filter Element
Clean filter housing and install new filter assembly
element (14) when hydraulic oil filter warning light
illuminates, or after every 1 800 hours of operation,
whichever comes first.
Note:
When hydraulic oil in tank assembly (1) is
being replaced due to a hydraulic failure, or at
recommended change interval, filter element (14)
should be replaced.
1. Position the vehicle in a level work area, apply the
parking brake and switch off the engine. Operate the
steering in both directions several times to relieve
any pressure in the steering system.
2. Block all road wheels and place the battery master
switch in the 'Off' position.
3. With a suitable container in position, remove drain
plug (23), and drain hydraulic oil to below the level of
filter assembly (14). Reinstall drain plug (23).
4. Remove bolts (10) and lockwashers (11) securing
access cover (8) to tank (1). Remove and discard
gasket (7) from tank (1).
5. Remove wing nuts (16) from rods (15). Slide Filter
element (14) assembly and gasket (18) over rods (15)
and remove from tank assembly (1). Discard filter
element (14) and gaskets (18).
WARNING
Splashing liquid. Wear a suitable face shield
when using compressed air to dry hydraulic
tank and components.
6. Clean out filter element (14) compartment in tank
assembly (1) with a suitable solvent and dry with
compressed air.
7. If damaged, remove and replace rods (15) from tank
assembly (1).
8. Install new gasket (18), new filter element (14) and
relief valve assembly, over rods (15) and into filter
element compartment in tank assembly (1). Secure
Filter element assembly (14) in position with wing nuts
(16).
9. Install new gaskets (7) on access cover (8)
mounting flange. Secure access cover (8) to tank
assembly (1) with bolts (10) and lockwashers (11).
10. Refill tank assembly (1) with hydraulic oil, as
specified in Section 300-0020, LUBRICATION SYSTEM.
Install filler cap (2) and gasket (3) on filler neck assembly.
11. Place the battery master switch in the 'On'
position, remove wheel blocks, start the engine and
operate steering and bowl hydraulic systems to
circulate the hydraulic oil.
12. Switch off the engine and check for leaks. Tighten
lines and fittings as required. Check hydraulic oil tank
level as described under 'Checking Oil Level'.
Replacing or Cleaning Suction Screens
Suction screens (17) should be cleaned every time
tank assembly (1) is fully drained for any reason. Refer
to 'Replacing Hydraulic Oil' for oil change interval.
1. Position the vehicle in a level work area, apply the
parking brake and switch off the engine. Operate the
steering in both directions several times to relieve
any pressure in the steering system.
2. Block all road wheels and place the battery master
switch in the 'Off' position.
3. Remove bolts (9) and lockwashers (11) securing
access cover (6) to tank assembly (1). Remove and
discard gasket (5) from tank assembly (1).
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