Operation - Greenlee fairmont H8508 Instruction Manual

Operation

Impact Bits
Fairmont recommends using Greenlee Impact Style Bits.
Some impact bits with a long spiral or wide flute
spacing may not be acceptable to use with this
tool. These bits can whip or bend under sideload.
Do not use bits exhibiting these characteristics
with the H8508 Impact Wrench.
Failure to observe this warning could result in
severe injury or death.
Hole Dia. Overall Length Hex Shank
UPC No.
78-3310-
inch mm inch
37868 9/16 14.3
37869 11/16 17.5
37870 13/16 20.6
37871 15/16 23.8
37872 1-1/16 27.0
37873 9/16 14.3
37874 11/16 17.5
37875 13/16 20.6
37876 15/16 23.8
37877 1-1/16 27.0
1. Inspect the drill bit to be installed. Discard the bit if
cracks, chips or gouges are evident.
2. Inspect the quick-change chuck (7). Remove any dirt
or other contamination that may have accumulated
in the chuck (7).
3. Slide and hold quick-change chuck (7) away from
tool and remove drive shank (8).
4. Insert desired bit into hex socket of tool and release
chuck (7).
5. To remove drill bit, slide and hold quick-change
chuck (7) away from tool and remove bit.
Greenlee / A Textron Company
Weight
mm inch mm lb
18 457 7/16 11.1 0.9
18 457 7/16 11.1 1.1
18 457 7/16 11.1 1.4
18 457 7/16 11.1 1.5
18 457 7/16 11.1 1.7
22 559 7/16 11.1 1.2
22 559 7/16 11.1 1.5
22 559 7/16 11.1 1.8
22 559 7/16 11.1 2.1
22 559 7/16 11.1 2.2
H8508 Hydraulic Impact Wrench
1/2" Socket Drive Adapter and Sockets
(See Figure 1)
1. Inspect quick-change chuck (7). Remove any dirt or
other contamination that may have accumulated in
the chuck.
2. To insert 1/2" socket drive adapter, slide and hold
quick-change chuck (7) away from tool. Insert socket
drive adapter into chuck and release chuck.
3. USE SOCKETS APPROVED FOR IMPACT
WRENCH USE ONLY. Inspect 1/2" drive socket to
be installed. DISCARD SOCKET IF CRACKS,
CHIPS OR GOUGES ARE EVIDENT. Install socket
on socket drive adapter.
4. To remove socket drive adapter, remove socket from
adapter. Slide and hold quick-change chuck (7)
away from tool. Remove socket drive adapter.
Setting Tool for Open-Center or
g
Closed-Center Operation
409
499
All H8508 models are equipped to allow the tool to be
636
used with either an open-center or closed-center hydrau-
681
lic power system.
772
545 Closed-Center Hydraulic System
681
Hold the tool as you would when operating, observe
817
rear of trigger spool, turn center spool in trigger spool
953
(Figure 1, Item 4) clockwise until spool stops. The tool is
998
now ready for closed-center operation.
Open-Center Hydraulic System
Hold the tool as you would when operating, observe rear
of trigger spool (Fig. 1, Item 4), turn center spool in
trigger spool counterclockwise until spool backs out to
snap-ring. The tool is now ready for open-center opera-
tion.
Open-Center/Closed-Center Hydraulic System
(for tools with serial numbers through 199)
Turn center spool in trigger spool (Figure 1, Item 4) so
spring pin indicator points upward at the letter "C". The
tool is now ready for closed-center operations. Turn
center spool in trigger spool so spring pin indicator
points downward at the letter "O". The tool is now ready
for open-center operation.
8
4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070