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Service (cont'd)
Hydraulic Schematic
9
7
4
3
Intake strainer, #50 mesh brass screen
1
Low-pressure pump — 3.4 liters/min. (208 in
2
at 3000 rpm (100%)
Low-pressure relief valve — 19 Bar (275 psi)
3
located in pilot-operated valve
Low-pressure bypass check valve
4
High-pressure pump
5
976-22: .25 liters/min. (15 in
980-22: .73 liters/min. (45 in
High-pressure relief valve
6
717/690 Bar (10,400/10,000 psi)
Pilot-operated directional control valve
7
3 way, 2 position
Manually operated check valve
8
Female coupler half
9
Greenlee Textron / Subsidiary of Textron Inc.
976-22, 980-22 Hydraulic Power Pump
8
6
5
2
1
3
/min)
Piston
7
3
/min) at 2850 rpm (100%)
3
/min)
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
(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.
A
C
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.
73
18
4455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
®
, as follows:
B
D
84
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