24
EATON Heavy-Duty Series 2 Hydrostatic Pumps Parts and Repair E-PUPI-TS004-E October 2004
Parts List
Pressure Override
Valve
Table 12.0 Pressure Override Valve
4994730-XXX POR Relief Valve Assembly POR
(Item76, 163)
ITEM PART NO. QTY. DESCRIPTION
11 4995049-001 1 Spring, Guide, POR
10 4996993-001 1 Seat, POR, S/A
9 4994960-001 1 Poppet, POR
8 8770-014 1 Back up Ring, Piston
7 8765-014 1 O-Ring, Piston
6 8765-020 1 O-Ring, Plug
5 16024-006 1 Jam Nut
4 16139-618 1 Set Screw, Half Dog
3 4994729-001 1 Piston, POR
2 4994545-001 1 Plug, POR
1 See Table 12.1 Valve Spring,
1
2
3
4
5
6
Item 76,163
Externally Adjustable POR Valve
176
Table 12.1
POR Valve Pressure Setting Ranges
PRESSURE
SETTING ITEM 1 ADJUSTMENT
PART NO. bar[lbf/in
2
] PART No. RANGE (psi)
4994730-150 103,4[1500]
4994730-200 137,9[2000]
4994730-250 172,4[2500]
4994730-300 206,8[3000]
4994730-350 241,3[3500]
4994730-400 275,8[4000]
4994730-450 310,3[4500]
4994730-500 344,7[5000]
4994730-550 379,2[5500]
4994730-575 396,4[5750]
4994730-600 413,7[6000]*
4994730-650 448,1[6500]*
*Do not set to this pressure level without Eaton Engineering approval.
110732-350 1500-4000
110732-650 5500-6000*
110732-450 3500-5000
110732-550 4500-6000*
1
9
7
8
10
11
2
8
9
6
7
10
11
Shim Adjustable POR Valve
Replaced with externally adjustable POR
(Shown above)
110700-099
Table 13.0 High Pressure Relief Valve
110700-XXX Relief Valve Assembly
ITEM PART NO. QTY. DESCRIPTION
1 113105-000 1 Plug, Relief Valve
2 16133-12 1 O-Ring
3 4992535-001 1 Spring Conical
4 See Table 13.1 Relief Valve S/A
5 4992534-001 1 Retaining Ring, Round Ext.
110700-XXX
High Pressure Relief Valve Settings
Identify Pressure settings by the part number of the high pressure
valve. The part number is followed by a dash and the related
pressure rating, i.e., 110700-150. This setting represents a
psi(lbf/in
2
) of 1500 lbf/in
2
. Ranges for the high pressure relief valves
are available from 1500 to 6000 lbf/in
2
in increments of 500 lbf/in
2
.
3
1
2
5
4
3
1
2
5
4
High Pressure Relief
Valve
(Item 78,79)