8
7
6
5 TH 406C TH 407C
4
3
110/80 115/80
TH 406C TH 407C
TELE
LIFT
1
125/85 130/90
TILT
70/50
2
COMPENSATION 65/45
H
H A4 B4
V2
C1
260 Bar Ratio 4:1 70 Bar
V2
G
AUX 1 (STANDARD)
300 Bar Ratio 7.3:1
330 Bar Ratio 4.2:1 C2
300 Bar Ratio 4:1
C1
M C2
V1
C1
C2
70 Bar
V1
V2
V1
G
H
LS1
D (P STEER)
B1
A1
B2
A2
B3
A3
B4
A4
DLS (LS STEER)
TPr P2 Pr LS2
0.8 100 P1 0.4
F
TDi
G
100 0.7 l/min
P GAUGE
231 Bar
E 10
3.5 Bar
F
30 Bar
T2
T1 A 280 Bar
D
C
3
A 280 Bar
B 280 Bar
B 280 Bar
A 280 Bar
MAIN CONTROL VALVE
E
E STEERING SELECT VALVE B
A
R
L 240 Bar
240 Bar T
LS
P
D
STEERING VALVE (ORBITAL)
T
P
19Bar 2.2
REVERSE & DEMAND FAN
REAR STEER
180 Bar
FRONT STEER
D
MASTER CYLINDER
260Bar 0.6
8 BAR NORM OPEN
0.6
16.8cc
C
C PUMP DATA MACHINE
DRIVE RATIO 1:1.088 WITH ENGINE
CATERPILLAR TH336C /TH406C TH337C / TH407C
CC 63
P
T M/C
BOOSTED BRAKE ACTUATION
B
B 19cc FILL
CAT: 207 bar
8 Bar
3.45 Bar beta(10)=1000
A
A
ENGINE:FAN PUMP DRIVE RATIO 1:1.0588
8
7
6
5
4
3
2
1
TH336C, TH337C, TH406C & TH407C S/N MJR00150 & After S/N THM00150 & After S/N DJB00150 & After S/N SXJ00150 & After S/N GAT00150 & After S/N RCH00150 & After S/N MLH00150 & After S/N JJT00150 & After
TH336C, TH337C, TH406C, TH407C, TH414C, TH514C, TH417C Hydraulic Schematic 31200831 UENR6257-02 Sheet 1 of 6 February 5, 2016 - E