TM 5-3805-280-24-1
Theory of Operation
actuated the pilot pressure also flows through pilot
The bucket flow control valve (M) restricts oil flow to
valve A to shift pilot valve B (I) closing the passage
the bucket cylinder in the combined operations of
from the poppet valve (G). The pressure on the back
bucket, arm in, and boom up to ensure supply oil flow
side of the poppet valve increases closing the poppet
goes to the higher-loaded boom function to raise the
valve causing a restriction for supply oil flow through
boom.
the poppet valve to the bucket valve (H).
When arm in function is actuated the pilot pressure
also shifts pilot valve A (E). If boom up function is
TX,05,GG2187
1920MAY982/2
9025
05
55
6-51