Identification; Replacing The H1 Pump - Hardi Saritor Service Manual

HYDRAULIC - SAUER H1 PUMP

Identification

H1 Axial Piston Pumps
Technical Information
Frame 115/130 cm 3 Single Pump
SAUER
HARDI
Pos. DANFOSS
P/N
Code
78307201 83030520
1
78303801 83015464
78307101 83030419
2
78303601 830154463

Replacing the H1 pump

The pumps H1 (P/N 78303601and 78303801) are no longer available. In this case, if a new H1 pump is installed (P/N
78307101or 78307201), the charge pressure has to be set at the same value of the original pump that is 348psi 24 bar at
1500 engine rpm.
To set the charge pressure on the pump, refer to "Charge Pressure Valve" page 91
Procedure
Initially the charge pressures are connected together. The circuit must be independent to set the charge pressure of the
original pump
1. Disconnect the hydraulic. hose to separate the charge circuit
85
SAUER DANFOSS
see details "Description Code Details" page 87
H1-P-115-R-A-A4-C2-N-E2-G-G2-H4-L-45-L-45-L-L-30-PN-NNN-G21
H1-P-115-R-A-A4-C2-N-E2-G-G2-H4-L-45-L-45-L-L-24-PN-NNN-G21
H1-P-115-R-A-A4-C2-N-E8-G-G3-H3-L-45-L-45-L-L-30-PN-NNN-G21
H1-P-115-R-A-A4-C2-N-E8-G-G3-H3-L-45-L-45-L-L-24-PN-NNN-G21
Machines
Comment
Concerned
(Current version)
From S/N 55809
Charge pressure = 435psi
(and only 55789)
(30bar)
(No longer available)
Charge pressure = 348psi Until S/N 55808
(24 bar)
(Current version)
From S/N 55809
Charge pressure = 435psi
(and only 55775)
(30bar)
(No longer available)
Charge pressure = 348psi Until S/N 55808
(24 bar)
Engine