Service manual

18.0 GPM (68,1 L/min.)
at 2750 RPM
C apacity . . . 15.5 Qts (14,7 L)
DISPLACEMENT CONTROL VALVE
Neutral . . . . 310-330 PSI
(2137-2275 kPa)
Stroked . . . . 3O0-320 PSI
(2069-2206 kPa)
CHARGE PUMP . . . . 11.0 GPM
HYDRAULIC PUMP
225-290 PSI (1551-2000 kPa )
(41,6 L./M in.) at 2850 RPM
FLOW DIVIDER ADJUSTMENT VALVE
NOTE: Unless otherwise specified
springs have NO significant
pressure value.
HYDRAULIC/HYDROSTATIC SCHEMATIC
PILOT ACTIVATED DIRECTIONAL
CONTROL VALVE - FLOW CONTROL
SPOOL
FIXED CAPACITY DISPLACEMENT
BIDIRECTIONAL HYDROSTATIC
MOTOR
LEGEND
RESERVOIR:
DIFFERENTIAL PRESSURE SWITCH:
SPRING LOADED FILTER BYPASS
ONE WAY RESTRICTOR VALVE
Printed in U.S.A.
DRIVE MOTOR SHUTTLE VALVE
RELIEF/REPLENISHING VALVE - HIGH
RELIEF VALVE - MAIN:
2550-2600 PSI (17582-17927 kPa)
RELIEF VALVE - PORT:
CHECK VALVE - BUCKET POSITION
VALVE
3500 PSI (24132 kPa)
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - AUXILIARY
(OPTIONAL)
LOAD CHECK VALVE
PILOT ACTIVATED DIRECTIONAL
CONTROL VALVE - UNLOADING
SPOOL
SHUTTLE RELIEF VALVE:
36-44 PSI (248-303 kPa)
853 PLUS - Normally Closed
853 BASE - Normally Closed
1
at Front Quick Couplers
853
(S/N 508411001-15215)
MC2396LU (5-19-99)
2
4
3
5
11
VALVE: 45-55 PSI (311-379 kPa)
6
7
15
14
16
13
10
25
20
21
22
23
18
17
RELIEF VALVE - CHARGE:
RESTRICTION
37
RELIEF VALVE - FRONT AUXILIARY
2400-2600 PSI (16548-17927 kPa)
31
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE (TWO COIL)
35
(Printed June 1999)
PRESSURE:
(
S/N 510125001-26791)
(S/N 510250001-50691)
34 FILTER - HYDROSTATIC (CANISTER)
CONTROL VALVE POWER-BEYOND
OUTLET
8
9 RELIEF VALVE - PORT: (OPTIONAL)
3100 PSI (21371 kPa)
2500 PSI (17238 kPa)
12
RELIEF/ANTICAVITATION VALVE -
PORT (TILT BASE END) (OPTIONAL):
TOW VALVE19
24
26 MUFFLER (If Equipped )
CHARGE PRESSURE SENSOR27
28 FLUID TEMPERATURE SENSOR
29 BYPASS VALVE - COLD OIL
85 PSI (596 kPa)
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - FRONT
AUXILIARY (OPTIONAL ON 853 BASE)
30
32
33
36 FILTER - HYDRAULIC (CANISTER)
40
FILTER
FILTER
FILTER
38
ANTICAVITATION VALVE
CHECK VALVE - FILTER
140°F. (60°C.) Fluid at Full RPM
STANDARD . 4350 PSI (29990 kPa)
OPTIONAL . 5000 PSI (34475 kPa )
39 PILOT TO OPEN CHECK VALVE
MC2396LU