Sinoboom AB18EJ - Page 95

REPAIR PROCEDURES
AB18EJ&18HJ Maintenance Manual 6-13 © Oct 2020
Table 6-5
No. Name
Spec.
Function
1
2–way hydraulc
lock
DC08-40-0-N-25
Lock the hydraulic oil in master cylinder
2
Solenoid
directional valve
SV08-47D-0-N-12ER
Select directions for manual leveling function
3
Pressure
compensating
valve
FR08-20F-0-N-M5.0
Ensure the flow for leveling function remains constantly
at 5Lpm, not affected by the the load pressure variation
at the downstream
4
Solenoid
directional valve,
plate type
DS3-TA/11N-SD12K7 Control the main boom retraction
5
Solenoid
directional valve,
plate type
DS3-TA/11N-SD12K7
Control the main boom extension in conjuction with #4.
6
Solenoid
directional valve
SV10-47D-0-N-12ER Control the steer direction
7
Solenoid
directional valve
SV10-47D-0-N-12ER
Control the up and down movement of secondary boom
8
Solenoid
directional valve
SV10-47D-0-N-12ER
Control the up and down movement of main boom
9
Solenoid
directional valve
SV10-47D-0-N-12ER
Control turntable rotary dirction
10
Solenoid
directional valve
SV08-21-0-N-12ER
Control front pump discharing
11
Solenoid
directional valve
SV08-21-0-N-12ER
Control rear pump discharging
12 Check valve CV08-20-0-N-4
Prevent oil entering auxiliary power unit
13 Check valve CV08-20-0-N-4
Prevent oil entering rear pump
14
Proportional flow
valve
PV72-30A-0-N-12ER
Make turntable rotary speed adjustable
15
Proportional
relief valve
TS08-27A-0-N-12ER
Control the max allowable pressure for each action
16
Proportional flow
valve
PV72-30A-0-N-12ER
Make main boom lifting speed adjustable
17 Relief valve RV08-22A-0-N-26/M100
Restrict the secondary relief pressure of secondary
boom down movement at 100bar
18
Proportional flow
valve
PV72-30B-0-N-12ER
Common proportional valve
19 Relief valve RV08-22A-0-N-26/M145
Restrict the secondary relief pressure of main boom
extension at 145bar
20
Pressure
reducing valve
PR10-36A-0-N-15/M38
Restrict the operating pressure for oscillation at 38bar
21
Pressure
compensating
valve
FR10-39A-0-N
Ensure the flow for oscillating function remains
constantly at 5Lpm, not affected by the the load
pressure variation at the downstream