HW3 Impact Wrench
Greenlee Tools, Inc.
4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
8
Assembly
(cont’d)
Reversing Spool
1. Install new O-ring (24) and backup ring (25) onto
reversing spool (17).
2. Install new O-ring (27) and backup ring (28) into
head (1).
3. Screw cap (23) onto spool (17) end closest to O-ring
(24).
4. Slide spool (17) into head (1) from the right side.
5. Install cap (23) on opposite spool (17) end. Use
one wrench on each cap (23) and tighten to 31 Nm
(23 ft-lb).
Remove Spool
This Direction
Install Spool
This Direction
Impact Mechanism
1. Apply Mobilith SHC™ PM 460 to the surfaces of the
hammer frame (56), hammers (57), hammer pin (58),
and anvil (59).
2. Install the two hammers, 180° from each other, into
hammer frame. Install pins into hammer frame and
through the hammers, then slide the assembly onto
the spline of drive shaft (8).
3. Pack hammer frame center space with Mobilith
SHC™ PM 460. Install anvil into hammer frame and
through hammers.
4. Install O-ring (43) on hammer case cap (41). Install
roll pin (44) on hammer case cap (41).
5. Slide the hammer case cap assembly (41) over the
anvil.
6. Install snap ring (67) onto head (1).
Flow Control
1. Install O-ring (61) and backup ring (62) onto piston
stop (63).
2. Install piston stop (63) into handle (5).
3. Install piston (64), spring (65), and plug (66) into
handle (5).
