Case CX80 - Page 123

CHAPTER 5 - LUBRICATION, FILTERS, AND FLUIDS
5-41
6-34551NA Issued 8-04 Bur
HYDRAULIC BREAKER (OPTIONAL) - REPLACING HYDRAULIC FLUID AND FILTERS
WITH STANDARD HYDRAULIC FLUID
CS99A860A
Figure 114
HYDRAULIC FLUID
• When using the hydraulic breaker, hydraulic fluid
deteriorates more quickly than during ordinary
digging. Check the hydraulic fluid level more
frequently. In addition, when replacing the filters,
also check the condition of the hydraulic fluid.
• Replace the hydraulic fluid and filter element using
the following graph as a reference, depending on
the operation frequency of the hydraulic breaker.
• Replace the return filter for the hydraulic breaker
at the same interval as the element.
RETURN FILTER
Release all pressure in the hydraulic reservoir. See
Releasing Pressure in the Hydraulic System.
IMPORTANT: It is mandatory to use the option
control pedal to release all pressure in the hydraulic
breaker circuit.
This filter is equipped with an indicator (7). When the
filter is restricted, the filter must be changed.
Remove the drain plug (6) and drain the hydraulic oil.
Remove the four screws (1) on top of the case and
remove the cover (2), indicator and O-ring (3)
assembly.
Replace the filter (5) with a new filter.
Discard the used O-rings.
Insert new O-rings (3) and (4) and install the
assembly.
Tighten the retaining screws (1) for the cover (2).
Install the drain plug (6).
Start the engine and run it at low speed. Operate the
hydraulic breaker and check that there are no leaks.
CS98M622
Figure 115
CX75SR, CX80
To access the filter, remove the screws and the hood.
CT02D097
Figure 116
1. PERCENTAGE OF USE 2. INTERVAL IN HOURS 3. REPLACING HYDRAULIC FLUID 4. REPLACING HYDRAULIC FILTERS
4
3
1
2
1
7
2
6
5
4
3