Operation—Operating the Machine
CN93077,0000004 -19-19AUG15-1/1
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.
CAUTION: Prevent possible injury from
unexpected machine movement. Clear all
bystanders from the area before lowering the
boom with the engine stopped.
1. Remove control valve access cover.
CAUTION: To avoid injury from escaping oil
under pressure, stop engine and relieve the
pressure in the system before disconnecting or
connecting hydraulic or other lines. Tighten all
connections before applying pressure.
NOTE: Never loosen screw more than 2 turns as
screw may come off.
2. Loosen nut (1). Loosen boom manual lower screw
(2) 1/2 turn. The boom will start to lower. The boom
lowering speed can be adjusted by loosening screw
more.
3. After the bucket is lowered to the ground, tighten
screw, then nut to specification.
Specification
Screw—Torque................................................................................7 N·m
62 lb·in
Nut—Torque..................................................................................13 N·m
115 lb·in
1— Nut
2— Boom Manual Lower Screw
X981
1
—UN—23AUG88
Avoid Injury From Escaping Oil Under Pressure
TX1000642
—UN—29NOV05
Control Valve—Right Side Shown
2-3-20
092221
PN=121
Summary of Contents for 380GLC
Page 6: ...Introduction Continued on next page TX JDEULA 19 11JUL16 2 3 TX1219046 UN 11JUL16 092221 PN 6...
Page 7: ...Introduction TX JDEULA 19 11JUL16 3 3 TX1219047 UN 14JUL16 092221 PN 7...
Page 9: ...Introduction DX EMISSIONS EPA 19 12DEC12 2 2 TS1721 UN 15JUL13 092221 PN 9...
Page 17: ...Introduction DX EMISSIONS CARB 19 26AUG20 8 8 RG32759 UN 19AUG20 092221 PN 17...
Page 24: ...Introduction 092221 PN 24...
Page 287: ...Index Index 11 092221 PN 11...
Page 288: ...Index Index 12 092221 PN 12...
