JLG 1100S Service Manual - Manual (Page 426)

SECTION 7 - BASIC ELECTRICAL INFORMATION & SCHEMATICS
7-24 – JLG Lift – 3121256
SWING DRIVE
Bearing to Pinion Ratio: 103:20
Gearbox Ratio: 54.58:1
Motor Disc.: 6.00 c.i.r.
AUX. PUMP
A
B
1 2 3 MS
1 3
2
1
2
2
2
1 3
RESERVOIR
SHT. #2
SWIVEL PORT
#2
"X"
SHT. #2
TO "X" PORT OF
FUNCTION PUMP
SHT. #2
FROM
"LS" PORT OF
MAIN VALVE
BOOM CONTROL
M1
1500 PSI
1500 PSI
SWING
EMERGENCY
LOWER
GR
TO GR PORT
OF MAIN VALVE
GENERATOR RETURN OIL
TO RESERVOIR
T1
LS
LS1
FROM GR PORT
OF GENERATOR
1
2
2 1
3
1 2
2
P
A
B L
GR
W
"OPTION"
GENERATOR CONTROL
1100SJ / 1100SJP
a
P T
b
A B
T3
P2
B
W MP
M
S
P
SWING
LS
Figure 7-32. Hydraulic Schematic - Boom Control - Sheet 1 of 2