Greenlee / A Textron Company 20 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
980 Hydraulic Power Pump
(1) Intake strainer, #50 mesh brass screen
(2) Low-pressure pump — 5.52 liters/min. (335 in
3
/min)
at 3600 rpm (100%)
(3) Low-pressure relief valve — 19 bar (275 psi)
located in pilot-operated valve (7) Piston
(4) Low-pressure bypass check valve
(5) High-pressure pump
980
— 1.04 liters/min.
(63.5 in
3
/min) at 3450 rpm (100%)
(6) High-pressure relief valve — 717/690 bar
(10,400/10,000 psi)
(7) Pilot-operated directional control valve — 3 way,
2 position
(8) Manually operated check valve
(9) Female coupler half
Service (cont’d)
9
8
6
5
2
1
7
3
4
Driv-Lok Pin
Seal the Driv-Lok pin (73) to the pump block (84) with
a 1.5 mm (1/16") bead of an RTV-type silicone-based
sealant, such as Dow Corning 732™ Multipurpose
Sealant or equivalent.
Sealing Instructions for Assembly
Motor
If the motor has been disassembled, seal with a 3 mm
(1/8") bead of a silicone-based gasket/flange sealant,
such as Loctite
®
587 Ultra Blue
®
, as follows:
(A) To the mounting surface around the threads
(four locations)
(B) To the chamfer (four locations)
(C) Around the innermost machined circumference
of the mounting surface
Apply a 1.5 mm (1/16") bead of an RTV-type silicone-
based sealant, such as Dow Corning 732™ Multipurpose
Sealant, as follows:
(D) Around the motor bearing screws (two locations)
Assemble immediately.
73
84
A
B
D
C
Hydraulic Schematic
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