JLG 1500SJ Service Manual - Manual (Page 625)

SECTION 7 - BASIC ELECTRICAL INFORMATION & SCHEMATICS
3121262 – JLG Lift – 7-45
JIB LOCK CYLINDER
BORE 2.5" 4.91 sq in
ROD 1.75" 2.41 sq in
ANNULAR 2.50 sq in
STROKE 13.375"
RATIO 1.96:1
PLATFORM CONTROL VALVE
T
C2 C1
V1 V2
V2
V1
JIB BOOM FUNCTIONS
PLATFORM LEVEL CYLINDER
BORE 3.5" 9.62 sq in
ROD 1.5" 1.76 sq in
ANNULAR 7.85 sq in
STROKE 14.79"
RATIO 1.23:1
PLATFORM ROTATOR
14.1 cu in
3:1 PILOT RATIO
SPRING 3000 PSI
- 0
+50
P
T1
MP
- 50
+ 0
L1
ML1
L2 ML2
R1 R2
S1 S2
- 0
+50
T2
2500
PSI
2000
PSI
2000
PSI
0.2
GPM
2.0
GPM
Figure 7-50. Hydraulic Schematic - Sheet 10 of 10
1001120628-F