Advertisement
Service (cont'd)
The following section and Figures describe pertinent
details for refinishing ball seats and component
re-assembly and adjustments.
Motor Face Seal
When reassembling the motor, refer to Figure A1 for the
face seal seating dimension. Also, refer to this figure for
setting the vertical position of counterweight (32).
22
21
Greenlee Textron / Subsidiary of Textron Inc.
976-22, 980-22 Hydraulic Power Pump
MOTOR SHAFT
MOTOR FACE
4.6 mm (.180 inch)
4.1 mm (.160 inch)
6mm (.234 inch)
32
Figure A1
8
Manual Release / Automatic
Release Valve Handle Setting
Refer to Figures A2 and A3. Thread in the shaft (62)
until it just touches the check ball (55) (in its spring-
loaded closed position). Slide collar (104) on the shaft.
Position the handle (61) at the location "Position 1,"
(Figure A3), with the other surface of the handle flush
with the end of the shaft. Lock in place. Rotate the
handle to "Position 2," (Figure A3). Slide the collar
toward the valve body until it contacts the 15.9 mm
(5/8") diameter portion of the control shaft. Rotate the
lock collar clockwise until it touches the stop pin, and
lock in place.
When locking control handle and lock collar in
place, torque set screws to 2.8 - 3.4 Newton-meters
(25-30 inch-pounds).
0.312" (7.938 mm) ø BALL SEAT
54
55
SET POSITION #1
45°
STOP
CLOSED
19
4455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
61
104
60
Figure A2
STOP
62
PIN
135°
BALL OPEN
112.5° (.99 mm [.039"])
22.5° (REF.)
POSITION 2
Figure A3
8
STOP
OPEN
8
Advertisement
