773 Hydraulic Schematic v-0512legend-2

Posted in 773
HYDRAULIC/HYDROSTATIC SCHEMATIC
WITH HIGH FLOW OPTION
773 (S/N 517611001 - 517621198)
(S/N 518011001 - 518012551)
(S/N 518111001 - 518112468)
(S/N 519011001 - 519024161)
(S/N 519211001 - 519212516)
(500 K 11001 AND ABOVE)
(PRINTED MARCH 2004)
V-0512legend
SPRING LOADED FILTER BY-PASS
VALVE: 45-55 PSI (3,1-3,8 Bar)
RESERVOIR:
Capacity . . . . . . . . . 24 Qts. (23 L)
1
2
19
PULL BUTTON ACTIVATED
DIRECTIONAL CONTROL VALVE - LIFT
ARM BY-PASS
9
RELIEF VALVE - MAIN:
3000 PSI (207 Bar)
at Front Quick Couplers
11
ANTICAVITATION VALVE
12
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - AUXILIARY
10
RELIEF VALVE - PORT:
3500 PSI (241 Bar)
5
RELIEF/REPLENISHING VALVE - HIGH
PRESSURE: 5000 PSI (34,5 Bar)
6
RELIEF VALVE - CHARGE INLET:
185-195 PSI (12,7-13,5 Bar)
at 16.7 GPM (62.3 L/min.)
at High Engine Idle
With 120 degrees F. (49 degrees C.) Fluid
24
25
26
LEGEND
FLOW DIVIDER ADJUSTMENT VALVE
PILOTED ACTIVATED DIRECTIONAL
CONTROL VALVE - FLOW CONTROL
SPOOL
PILOTED ACTIVATED DIRECTIONAL
CONTROL VALVE - BICS LOCK
VALVE - LIFT CONTROL
PILOTED ACTIVATED DIRECTIONAL
CONTROL VALVE - UNLOADING SPOOL
PILOTED ACTIVATED DIRECTIONAL
CONTROL VALVE - BICS LOCK
VALVE - TILT CONTROL
DIFFERENTIAL PRESSURE SWITCH:
36-44 PSI (2,5-3,0 Bar)
Normally Closed
3
22
21
20
17
18
Printed in U.S.A.
16
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - LIFT/TILT CONTROL
8
HYDRAULIC PUMP . . . . . . . Gear Type
16.7 GPM (62.3 L/min.) at High Engine Idle
23
CHECK VALVE
4
DRIVE MOTOR SHUTTLE VALVE
7
LOAD SHUTTLE VALVE - AUXILIARY
BLEED VALVE
13
RELIEF VALVE - PORT: . . . . . (Optional)
3500 PSI (241 Bar)
15
LIFT CYLINDER SPOOL - MADE TO
RESTRICT FLOW DURING BOOM
DOWN BUT NOT DURING BOOM UP
14
LOAD CHECK VALVE
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - HIGH FLOW
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - DIVERTER
RELIEF VALVE - MAIN (HIGH FLOW)
3000 PSI (207 Bar)
27
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE (TWO COIL)
28
PILOT TO OPEN CHECK VALVE
1 of 2
Dealer Copy -- Not for Resale
RESTRICTION
FILTER - CASE DRAIN (SINTERED
BRONZE)
32
31
33
FILTER - BICS CONTROL VALVE
(SCREEN)
44
RELIEF/ANTICAVITATION VALVE -
PORT (TILT BASE END)
3500 PSI (241 Bar)
39
ONE WAY RESTRICTOR VALVE
29
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - BLEED OFF
30
LOAD SHUTTLE VALVE
FILTER - HYDRAULIC (CANISTER)
V-0512legend (3-3-04)
NOTE: Unless otherwise specified
springs have NO significant
pressure value.
CHECK VALVE - BUCKET POSITION
VALVE
FIXED CAPACITY DISPLACEMENT
BIDIRECTIONAL HYDROSTATIC
MOTOR
34
38
35
RESTRICTION
36
VARIABLE CAPACITY DISPLACEMENT
BIDIRECTIONAL HYDROSTATIC PUMP
49
RESTRICTION - 0.020 inch (0,5 mm)
47
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - AUXILIARY BLEED
VALVE
48
46
AUXILIARY HYDRAULIC PUMP:
PUMP CAPACITYY:
10,3 GPM (39 L/min.)
37
SHUTTLE RELIEF VALVE
(Not Adjustable - Factory Set)
65 PSI (4,5 Bar)
45
50
RELIEF VALVE - 2000 PSI (138 Bar)
51
PILOT ACTIVATED DIRECTIONAL
CONTROL VALVE - HYDRAULIC
POWER BOBTACH
52
53
SCREEN
42
MUFFLER (If Equipped)
43
RELIEF VALVE - PORT:
3500 PSI (241 Bar)
40
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - BUCKET POSITION
VALVE (ON/OFF)
41
CHECK VALVE - BICS CONTROL VALVE
RELIEF VALVE - 1200 PSI (82,8 Bar)
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - (TWO COIL)
RESTRICTION - 0.090 inch (2,3 mm)
54
HYDRAULIC/HYDROSTATIC SCHEMATIC
WITH HIGH FLOW OPTION
773 (S/N 517611001 - 517621198)
(S/N 518011001 - 518012551)
(S/N 518111001 - 518112468)
(S/N 519011001 - 519024161)
(S/N 519211001 - 519212516)
(500 K 11001 AND ABOVE)
(PRINTED MARCH 2004)
V-0512legend
LEGEND
2 of 2
Dealer Copy -- Not for Resale