TM 5-3805-281-24-2
Hydraulic System
1--Left Control Valve
16--Arm I Valve
29--Arm Head End
37--Left Propel Neutral
(5-Spool)
17--Arm II Valve
Reduced Leakage
Passage Lift Check
2--Right Control Valve
18--Arm Regenerative
Relief Valve
Valve
33
(4-Spool)
Valve (in Arm II Spool)
30--Arm Head End
38--Rear Pump Control
3360
3--Rear Pump Control
19--Check Valve and
Reduced Leakage
Valve Pilot Inlet Filter
99
Valve
Orifice (in Arm II
Check Valve
39--Pilot Pressure Signal
4--Flow Combiner Check
Spool)
31--Arm Out Circuit Relief
Passage Filter
Valve
20--Bypass Shut-Off Valve
and Anti-Cavitation
40--Propel Pressure
5--Flow Combiner Valve
21--Swing Valve
Valve
Switch
6--System Relief Valve
22--Arm Rod End Reduced
32--Boom II Power
41--Shuttle Valve
Isolation Check Valve
Leakage Pilot Valve
Passage Lift Check
42--Solenoid Valve
7--System Relief Valve
23--Arm Rod End Reduced
Valve
Manifold
Isolation Check Valve
Leakage Check Valve
33--Auxiliary Power
43--Arm Regenerative
8--System Relief and
24--Swing Lift Check Valve
Passage Lift Check
Solenoid Valve
Power Boost Valve
25--Power Passage-to-Arm
Valve
44--Speed Sensing
9--Left Propel Valve
I Neutral Passage
34--Auxiliary Circuit Relief
Solenoid Valve
10--Right Propel Valve
Check Valve
and Anti-Cavitation
45--Propel Speed Change
11--Auxiliary Valve
26--Arm I Lift Check Valve
Valve
Solenoid Valve
12--Bucket Valve
27--Not Used
35--Front Pump Bypass
46--Power Boost Solenoid
13--Boom II Valve
28--Arm Head End
Inlet Port
Valve
14--Boom I Valve
Reduced Leakage Pilot
36--Propel Flow Control
15--Boom Regenerative
Valve
Valve
Valve (in Boom I
Spool)
Continued on next page
CED,OUOE026,13 1919JUN982/21
19-131
