Assembly - Greenlee 48520 Service Manual

Assembly

When assembling parts, refer to the Illustrations and
Parts Lists for correct orientation and placement of
parts.
Clean all parts with solvent and then dry thoroughly. Do
not expose O-rings or other packing components to
solvent for long periods of time.
Inspect all parts as they are assembled for signs of
damage, wear, cracks, etc. Do not install any parts
which appear to be damaged.
Apply hydraulic fluid or O-ring lubricant to all O-rings
and all metal surfaces which O-rings must slide over.
When installing an O-ring over a sharp edge, use a
rolling action to avoid damage to the O-ring.
Wherever assembled parts cause metal-to-metal
contact, coat the surfaces with hydraulic fluid or O-ring
lubricant.
Handle and Valve
1. Install O-ring (2), spool (3), spring (7), washer (8),
and retaining ring (6) to upper end of insulated valve
body handle (1).
2. Install O-ring (4), washer (5), and retaining ring (6) on
lower end of valve body handle (1).
3. Position trigger (9) on valve handle (1), aligning holes
in each component. Install trigger pivot pin (10) and
secure in place with two external retaining rings (11).
4. Position trigger guard (12) on handle (1) and secure
with round slotted head cap screws (14) and internal
tooth lock washers (13). On later model pruners, use
two button-head screws to secure one end guard to
the handle.
5. Install O-ring (15) onto handle (1).
6. Install O-ring (16) on return tube assembly (17).
Install return tube assembly in the handle and
secure in place with internal retaining ring (18).
7. Install felt breather filter (28), rod seal support (29),
rod seal (30), and seal retainer (31) into upper end
(27). Secure components in place with internal
retaining ring (32). Install O-ring (15) on upper end
(28).
8. Install ball (37), spring (38), pin (39), plug (40), and
O-ring (36) in sleeve (35).
9. Clamp upper end (27) in a vise and thread cylin-
der (19) onto upper end (27). Tighten with a strap
wrench.
Greenlee / A Textron Company
10. Use steps 12 through 22 to install piston seal
(21, 22) on piston and rod assembly (20).
11. Place O-ring on piston (21).
12. Place the piston seal (22) in the groove as shown.
13. Bend the seal over as shown. This will help hold the
seal in the groove when installing.
14. Remove the seal from the groove.
12
4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
48520 Pruner