TM 5-3805-281-10
Operating the Machine
HYDRAULIC BREAKER AND CRUSHER
ATTACHMENTS
Hydraulic breaker or crusher operation subjects the
machine's hydraulic system to possible contamination and
accelerated deterioration. The hydraulic return filter and
hydraulic oil must be replaced more often to prevent
damage to hydraulic pumps and other hydraulic
components. Change the hydraulic return filter and oil at
the intervals recommended below based on the amount of
machine operating time the attachment is used.
Percentage of Operating Time
Hydraulic Return Filter
Hydraulic Oil Change
Breaker or Crusher Used
Change Interval (Hours)
Interval (Hours)
100
100
600
60
150
800
40
200
1000
20
300
1300
TX,35,FF2664 1913MAY931/1
LOWER BOOM WITH ENGINE STOPPED
When an engine stops during operation, the boom cannot
be lowered using the pilot controller because there is no
pilot pressure oil to move the boom valve spool or to
unlatch the boom load lowering valves.
Continued on next page
CED,TX14740,6037
1924MAR981/2