JLG 340AJ Service Manual - Manual (Page 344)

SECTION 7 - BASIC ELECTRICAL INFORMATION & SCHEMATICS
7-30 – JLG Lift – 3121259
MASTER CYLINDER
BARREL: 3.0" (75mm)
ROD: 1.3" (32mm)
STROKE: 11.5" (293mm)
A A
A A
RT MOTOR
RT MOTOR
B B
B B
REAR BRAKES
LF MOTOR
LF MOTOR
REAR AXLE
FRONT AXLE
V1 V2
DISPLACEMENT:
PLATFORM ROTATOR
7.9IN (129.5)
P1 P2
SLAVE CYLINDER
BARREL: 3.0" (75mm)
ROD: 1.3" (32mm)
STROKE: 12.24"(311mm)
V1 V2
TELESCOPE CYLINDER
BARREL: 2.0" (50mm)
ROD: 1.3" (32mm)
STROKE: 38.5" (978mm)
OSCILLATING AXLE CYLINDERS
BARREL: 2.75" (69.85mm)
STROKE: 2.75" (69.85mm)
STEER CYLINDER
BARREL: 2.5" (65mm)
ROD: 1.75"(45mm)
STROKE: 5.5" (139mm)
JIB ROTATE
FLY BOOM VALVE T
P
J2
MP
J1 R2 R1 V1 V2 M1 L1 L2 M2
P1
T1 T2
P2 TELESCOPE PLATFORM LEVEL
UPRIGHT VALVE
Front Brakes
Traction lock
2 3 9
19 21 20 22 10 11
6
7
23
V1
V2
ORF
MAIN LIFT CYLINDER
BARREL: 3.5" (90mm)
ROD: 1.96" (50mm)
STROKE: 26.29" (668mm)
X
P
P
V V
ROD:
JIB CYLINDER
BARREL:
STROKE:
2.48" [63mm]
1.57" [40mm]
22.8" [580mm]
V2 V1
Valve
valve
Brake
TOP_VIEW
Figure 7-36. Hydraulic Schematic - Sheet 1 of 2