Grizzly H3274 User manual

Introduction
Heavy-duty pneumatic screwdriver features pad-
dle switch for multiple positioning arrangements,
forward and reverse switch, pressure clutch and
quick-change collet that accepts 1⁄4" hex screw-
driver bits. It has a free speed of 9500 RPM and
a torque range of 1.67 to 5 ft/lbs.
A. Impact Screwdriver ..................................... 1
B. Hanger ........................................................ 1
C. 1⁄4" MNPT Air Fitting .................................... 1
D. Driver Bit ..................................................... 1
Operation
Attach the hanger into the two recesess on the
air inlet nut (optional). Insert your driver bit into
the collet. The retaining clip will hold it in place.
Choose left or right rotation with the directional
switch. Control the air pressure with the air pres-
sure dial. Have your inlet pressure set at no more
than 80 PSI.
MODEL H3274
1⁄4" Impact Screwdriver
INSTRUCTION SHEET
Figure 1. Model H3274.
Figure 2. Lubricating directly into air fitting.
If you need help with your new pneumatic tool,
call our Tech Support at: [phone].
COPYRIGHT © MARCH, 2006 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.
#PC8030 PRINTED IN CHINA
INJURY HAZARD!
Always disconnect tool from
air to prevent unexpected
operation during service!
EXPLOSION HAZARD!
Never exceed 120 PSI!
EYE/EAR INJURY HAZARD!
Wear safety glasses and
hearing protection during
use of this tool!
Impact Screwdriver MUST have 3-4 drops of oil
directly dropped into the air fitting before each use
as shown in Figure 2.

H3274 Parts Breakdown and List
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REF PART # DESCRIPTION REF PART # DESCRIPTION
1 PH3274001 DRIVER BIT 19 PH3274019 BEARING
2 PH3274002 RETAINING CLIP 20 PH3274020 ROTOR
3 PH3274003 COLLET 21 PH3274021 CYLINDER
4 PH3274004 COMPRESSION SPRING 22 PH3274022 REAR COVER
5 PH3274005 NOSE HOUSING 23 PH3274023 SHEILD RING
6 PH3274006 SHEILD RING 24 PH3274024 MAIN HOUSING
7 PH3274007 BUSHING 25 PH3274025 COMPRESSION SPRING
8 PH3274008 STEEL BALL 26 PH3274026 DIRECTIONAL SWITCH
9 PH3274009 MANDREL 27 PH3274027 TRIGGER
10 PH3274010 BUSHING 28 PH3274028 TRIGGER PIN
11 PH3274011 BEARING 29 PH3274029 HOLE COVER
12 PH3274012 BOLT 30 PH3274030 PIN
13 PH3274013 HAMMER BLOCK 31 PH3274031 BOLT
14 PH3274014 HAMMER CASE 32 PH3274032 SCREW
15 PH3274015 SHEILD RING 33 PH3274033 AIRFLOW DIAL
16 PH3274016 TIGHTENING SCREW 34 PH3274034 AIR INLET NUT
17 PH3274017 CUSHION 35 PH3274035 HANGER
18 PH3274018 FRONT COVER 36 PH3274036 1/4" MNPT AIR FITTING