model g5791/g5792
17-piece 1⁄2" impact Wrench &
ratchet Kit
instruction manual
Copyright © MAy, 2008 By grizzly industriAl, inC.
Warning: no portion of this manual may be reproduced in any shape
or form Without the Written approval of grizzly industrial, inc.
#jM10705 printed in tAiWAn
7. avoid entanglements. do not
wear loose clothing, gloves, neck-
ties, rings, bracelets, or other jewel-
ry, which may get caught in moving
parts, when operating this tool. Wear
a protective hair covering to contain
long hair.
8. use correct air pressure.
exceeding the maximum psi rating
of this tool may cause unpredictable
operation or bursting.
9. disconnect air pressure
before servicing, changing accesso-
ries, or moving to another location.
never leave this tool unattended
when connected to air.
10. secure tooling. Always verify
tooling is secure before operation.
11. sharp surfaces. do not
place hands near the tooling sur-
faces when in operation.
12. remove adJusting Keys and
Wrenches after use. these
tools become dangerous projectiles
if left on the tool when it is started.
13. avoid flammables. do not use
this tool around any flammables that
may be ignited by sparks.
14. secure WorK. use clamps or a
vise to hold work when practical. it is
safer than using your hand and frees
both hands to operate tool.
15. maintain tools With care.
Keep tools lubricated and clean
for best and safest performance.
Follow instructions for lubricating
and changing accessories.
16. do not force tool. it will do
the job better and safer at the rate
for which it was designed.
17. checK for damaged parts
before using. Check for bind-
ing and alignment of parts, broken
parts, part mounting, loose bolts,
and any other conditions that may
affect operation. repair or replace
damaged parts before operating.
18. use good lighting. Keep work
area well lighted. dark work areas
increase risk of accidental injury.
19. avoid unintentional opera-
tion. Always disconnect air when
not in use, and do not carry tool with
hand on trigger.
20. use
the
recommended
accessories. Consult owner’s
manual for recommended acces-
sories. using improper accessories
may increase the risk of injury.
21. never alloW untrained
users to use this tool While
unsupervised.
22. if you are unsure of the
intended operation, stop
using tool. seek formal training
or research books or magazines that
specialize in pneumatic tools.
23. be aWare of hose location.
hoses can easily become a tripping
hazard when laid across the floor in
a disorganized fashion.
24. do not use under the
influence of drugs or
alcohol, or When tired.
no list of safety guidelines is complete,
because every work environment is
different. always consider safety first
and use common sense. failure to
use this tool with caution and respect
could result in serious personal
injury.
1
-2-
Model g5791/g5792 17-piece ⁄2" impact Wrench and ratchet Kit
inventory
1
⁄4" npt
Air
Fitting
C
B
d
A
F
g
i
e
h
j
Case
lubricator
ratchet
2" impact Wrench
ITEM
G5791
9mm
G5792
7/16"
1/2"
9/16"
5/8"
11/16"
3/4"
13/16"
15/16"
7/8"
A
B
C
D
E
F
G
H
I
1
⁄
10mm
11mm
13mm
14mm
17mm
19mm
22mm
24mm
27mm
tool oil Bottle
4mm hex Wrench
J
1"
figure 1. Model g5791/g5792 inventory.
1
Model g5791/g5792 17-piece ⁄2" impact Wrench and ratchet Kit
-3-
operations
impact Wrench
specifications
drive size............................................... 1⁄2
"
Bolt size Capacity ...................5⁄8" or 16mm
no-load speed ........................ 7,000 rpM
Maximum torque .......................... 260 ft/lb
Air inlet size ...................................1⁄4" npt
Air Consumption........................... 4.5 CFM
operating pressure ......................... 90 psi
Maximum operating pressure....... 120 psi
Weight .................................................3 lbs
read the manual before operation.
become familiar with this tool, its
safety instructions, and its operation
before beginning any work. serious
personal injury may result if safety
or operational information is not
understood or followed.
ratchet specifications
drive size............................................... 1⁄2
"
no-load speed ........................... 160 rpM
Maximum torque ............................ 50 ft/lb
Air inlet size ...................................1⁄4" npt
Air Consumption.............................. 4 CFM
operating pressure ......................... 90 psi
Maximum operating pressure....... 120 psi
Weight ..............................................1.5 lbs
lung/ear
inJury hazard!
Wear protective
equipment when
using this tool.
air supply
accidental
start hazard!
disconnect before
service or tool
changes.
the impact wrench and ratchet requires 90
psi to operate correctly. to improve air tool
lifespan, use the filter/lubricator/regulator
setup shown in figure 2, or install the
included in-line lubricator dircectly to the
air line.
air pressure
hazard!
never exceed 120
psi.
Quick
Connector
Quick
Connector
Lubricator
Regulator
Your
Tool
Air
Compressor
eye inJury
hazard!
Wear protective
equipment when
using these tools.
Quick
Coupler
Quick
Coupler
Air Hose
Filter
figure 2. installed filter lubricator
regulator.
1
-4-
Model g5791/g5792 17-piece ⁄2" impact Wrench and ratchet Kit
impact Wrench
Forward/reverse dial
your new 1⁄2" drive impact wrench (figure
3) generates up to 260 ft/lbs. of torque.
only use thick-walled impact sockets
with this air tool. the common thin-walled
chrome sockets may explode if used as
impact sockets, causing serious injury.
At the end of the handle you can adjust the
torque setting by pushing the knob in and
turning the knob to 1, 2, 3, or 4; 1 is the
lowest torque setting.
figure 4. ratchet locations.
daily maintenance
your impact wrench and ratchet Must
have 2-6 drops of oil directly dropped
into the air fitting before each use. in
addition, we recommend using an in-line
filter, lubricator, and regulator, as shown in
figure 2 or the included in-line lubricator.
if an in-line lubricator is not used, add 2-3
drops of oil into the tool air inlet every 2
hours of continued use.
to change the impact rotation, push the
slide button toward the front of the gun
for clockwise rotation and to the rear for
counterclockwise rotation.
these procedures should be done
after each use:
torque setting
•
Before putting the impact wrench or
ratchet away, put 2-6 drops of oil into
the air supply fitting and momentarily
operate the tool to distribute the oil
inside.
rotation Button
figure 3. impact wrench control locations.
ratchet
your new ratchet (figure 4) generates up
to 50 ft/lbs. of torque and delivers up to
160 rpM.
•
Wipe the tool exterior and sockets with
a slightly oiled cloth. your goal is to
leave a light film of oil on the tools to
prevent rust.
to change the rotation, adjust the forward/
reverse dial, as shown in figure 4.
1
Model g5791/g5792 17-piece ⁄2" impact Wrench and ratchet Kit
-5-
impact Wrench
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REFPART #
DESCRIPTION
REFPART #
DESCRIPTION
1
2
3
4
5
6
7
8
9
P5791001 HOUSING
26 P5791026 ROTOR BLADE
P5791002 VALVE BUSHING
27 P5791027 REAR CYLINDER PLATE
28 P5791028 BALL BEARING
29 P5791029 FRONT CYLINDER PLATE
30 P5791030 ROLL PIN
P5791003 REVERSE VALVE
P5791004 TRIGGER
P5791005 ROLL PIN
P5791006 VALVE STEM
31 P5791031 COMPRESSION SPRING
32 P5791032 PIN
P5791007
AIR INLET 1/4 NPT
P5791008 BALL SEAT
P5791009 COMPRESSION SPRING
33 P5791033 GASKET
34 P5791034 REAR COVER
35 P5791035 CAP SCREW
10 P5791010 STEEL BALL
11 P5791011 AIR COVER
12 P5791012 AIR REGULATOR
13 P5791013 O-RING
36 P5791036 LOCK WASHER
37 P5791037 FRONT RUBBER
38 P5791038 EXAHUST DEFELCTOR
39 P5791039 PHLP HD SCREW
40 P5791040 PILOT SET SCREW
41 P5791041 ANVIL COLLAR
42 P5791042 O-RING
14 P5791014 COMPRESSION SPRING
15 P5791015 REAR OIL SEAL
16 P5791016 SET SCREW
17 P5791017 BUSHING
18 P5791018 ANVIL 1/2" DRIVE
19 P5791019 HAMMER CAGE
20 P5791020 HAMMER PIN
21 P5791021 HAMMER DOG
22 P5791022 DRIVE CAM
23 P5791023 ROLL PIN
43 P5791043 REAR RUBBER BUMPER
44 P5791044 SET SCREW
45 P5791045 FRONT OIL SEAL
*46 P5791046 O-RING KIT
47 P5791047 AIR FITTING 1/4 NPT MALE
48 PAW04M HEX WRENCH 4MM
24 P5791024 CYLINDER
25 P5791025 ROTOR
49 P5791049 IN-LINE LUBRICATOR
50 P5791050 CARRYING CASE
* not included with impact wrench or ratchet; for aftermarket purchase only
1
-6-
Model g5791/g5792 17-piece ⁄2" impact Wrench and ratchet Kit
ratchet
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REF PART #
DESCRIPTION
HOUSING
AIR INLET
REF PART #
P5791124
DESCRIPTION
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
P5791101
P5791102
P5791103
P5791104
P5791105
P5791106
P5791107
P5791108
P5791109
P5791110
P5791111
P5791112
P5791113
P5791114
P5791115
P5791116
P5791117
P5791118
P5791119
P5791120
P5791121
P5791122
P5791123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
IDLER GEAR PIN
IDLER GEAR PLATE
CLAMP NUT
P5791125
P5791126
P5791127
P5791128
P5791129
P5791130
P5791131
P5791132
P5791133
P5791134
P5791135
P5791136
P5791137
P5791138
P5791139
P5791140
P5791141
P5791142
P5791143
P5791144
THROTTLE LEVER
ROLL PIN
BUSHING
VALVE BUSHING
VALVE STEM
O-RING
BUSHING
CRANK SHAFT
DRIVE BUSHING
RATCHET YOKE
COMPRESSION SPRING
O-RING
RATCHET ANVIL 1/2" DRIVE
COMPRESSION SPRING
STEEL BALL
VALVE PLUG
END PLATE CAP
REAR BEARING
REAR PLATE
PAWL
ANVIL PIN
ROTOR
FLAT WASHER
THRUST WASHER
INT RETAINING RING
FORWARD/REVERSE DIAL
COMPRESSION SPRING
LOCK PIN
ROTOR BLADE
CYLINDER
CYLINDER PIN
FRONT PLATE
FRONT BEARING
SPECIAL WASHER
THREAD RING GEAR
RATCHET HOUSING
IDLER GEAR
ROLL PIN
O-RING
*145 P5791145
O-RING KIT
G5791 SOCKETS
REF PART #
G5792 SOCKETS
REF PART #
DESCRIPTION
DESCRIPTION
146
147
148
149
150
151
152
153
154
155
P5791146
P5791147
P5791148
P5791149
P5791150
P5791151
P5791152
P5791153
P5791154
P5791155
SOCKET 1/2 DRV X 9
SOCKET 1/2 DRV X 10
SOCKET 1/2 DRV X 11
SOCKET 1/2 DRV X 13
SOCKET 1/2 DRV X 14
SOCKET 1/2 DRV X 17
SOCKET 1/2 DRV X 19
SOCKET 1/2 DRV X 22
SOCKET 1/2 DRV X 24
SOCKET 1/2 DRV X 27
146
147
148
149
150
151
152
153
154
155
P5792146
P5792147
P5792148
P5792149
P5792150
P5792151
P5792152
P5792153
P5792154
P5792155
SOCKET 1/2 DRV X 7/16
SOCKET 1/2 DRV X 1/2
SOCKET 1/2 DRV X 9/16
SOCKET 1/2 DRV X 5/8
SOCKET 1/2 DRV X 11/16
SOCKET 1/2 DRV X 3/4
SOCKET 1/2 DRV X 13/16
SOCKET 1/2 DRV X 15/16
SOCKET 1/2 DRV X 7/8
SOCKET 1/2 DRV X 1
1
Model g5791/g5792 17-piece ⁄2" impact Wrench and ratchet Kit
-7-
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