

PISTON PUMPS

FIXED DISPLACEMENT

VARIABLE DISPLACEMENT

FOR TRUCKS

2

XPseries

The DIN range .........................................4

Characteristics ........................................5

Performance .........................................13

Accessories ..........................................14

The range ...........................................16

Characteristics ........................................17

Dimensions ..........................................18

Performances ........................................19

Accessories ..........................................20

XA- SAE series

PA - PAC - PAD series

TXV series

The range ...........................................22

Why use a variable displacement pump ? ...................23

How does it work ? ....................................24

Pressure-ow "Load Sensing" control ......................25

Characteristics ........................................26

Performances ........................................27

Dimensions ..........................................28

TXV 130 with through shaft ..............................30

TXVA - SAE series ..................................32

GEP : Powerpack .................................45

The complete LEDUC product range ............. 46

Seriesseries

- SAE

4

fixed displacement bent axis design

The compact size envelope of XP pumps, together with their technology,

on the direction of rotation of the PTO,

6

These graphs are the results of testwork done in HYDRO LEDUC R&D laboratory, on a specic test bench

with a mineral hydraulic uid ISO VG46 at 25°C (~100 cSt) - disregarding the volumetric efciency.

8

For high speeds, please consult.

All XP pumps are supplied with their inlet tting.

Please specify required tting from the choice below when ordering.

x A

E

Dimensions in mm.

Dimensions in mm.

45° elbow fittings kit

90° elbow fittings kit

For XP pump applications where the pump is driven by a continuous running PTO (PTO which cannot be disengaged), this solution allows

the continuous running of the pump:

▪ without creating problems of uid overheating;

▪ without affecting pump service life;

This deector ensures the protection of the pump shaft seals.

In particular, it protects the pump from projections of dirt from the road in cardan drive installations.

Reference: DEF 054111

Dimensions in mm.

The by-pass valve is a 24 Volts solenoid valve.

When not activated, it enables pump output to link up to pump inlet.

When it is activated, the pump operates normally (output ow).

A drain line has to be installed between the By-Pass valve and the hydraulic tank of the vehicule to ensure sufcient oil circulation and a good

cooling into the pump. In any case, the connection to the tank must be done below the oil level.

16

within reduced size envelope:

18

(1) Maximum torque given with a mechanical efciency at 90%.

∆P x Q

600 x

0

20

Dimensions in mm.

Straight fittings

The cardan plate enables the pump shaft to be connected to a cardan shaft

with interface as on drawing on the right.

Note: the maximum admissible torque is limited by the drive shaft.

22

▪ construction equipment vehicles.

For rapid movements, the pump supplies the

required ow virtually instantaneously.

24

32

To obtain order code for your pump, ll in the

depending on the options required,

using the table below.

(2)

(3)

34

Figure 1

• Remove the 4 screws

.

• Take off the 2 half-anges

and the inlet tting

.

• Remove the plug

.

where

was.

seal is present, and in good condition.

and screws

onto the

36

38

See recommendations of the hosing dimensions on page 42.

▪ It protects the LS regulator against contamination coming from the circuit.

▪ Filter can be removed for maintenance.

▪ Filtration: 150 microns.

The LS lter protects the TXV's Load Sensing valve against contaminations

coming from the hydraulic circuit.

Mounted as standard on all TXV pumps (except for Constant Torque).

The cardan plate enables the pump shaft to be connected to a cardan shaft

40

The TXV pumps from 40 to 150 cc/rev are made as standard to be able

to use a setting screw:

and the corresponding displacement (see gure).

▪ For TXV 150 : 1 turn of the screw changes the displacement by 7.5 cc.

▪ For TXV 130 : 1 turn of the screw changes the displacement by 6.5 cc.

▪ For TXV 120: 1 turn of the screw changes the displacement by 9 cc.

▪ For TXV 92 to TXV 40: 1 turn of the screw changes the displacement by 8 cc.