Numa Champion 330 Maintenance manual

MANUFACTURER OF DOWN HOLE HAMMERS AND BITS
Champion
®®
®®
®
330
CARE & MAINTENANCECARE & MAINTENANCE
CARE & MAINTENANCECARE & MAINTENANCE
CARE & MAINTENANCE
INSTRINSTR
INSTRINSTR
INSTRUCTIONSUCTIONS
UCTIONSUCTIONS
UCTIONS
©2017 Numa All Rights Reserved
P.O. Box 348 ••
••
•646 Thompson Road ••
••
•Thompson, CT 06277 USA
US Toll Free: (800) 356-NUMA ••
••
•Tel: [phone] ••
••
•Fax: [phone]
E-mail: [email protected]
Website: www.numahammers.com
Patents 4,530,408 4,919,221 4,962,822 5,205,363 5,984,021 5,992,537 6,021,856 7,422,074

Champion
®®
®®
®
330
MANUFACTURER OF DOWN HOLE HAMMERS AND BITS
TABLE OF CONTENTS
Section I Description ......................................................... 1
Functional Description ............................................................. 2
1. Backhead ........................................................................ 2
2. Check Valve Seat ........................................................... 2
3. Check Valve Housing Spacer ....................................... 2
4. Check Valve ................................................................... 2
5. Check Valve Spring........................................................ 2
6. Check Valve Housing .................................................... 2
7. Belleville Washers ........................................................... 2
8. Feed Tube Retainer ......................................................... 2
9. Feed Tube Housing ......................................................... 3
10. Feed Tube ........................................................................ 3
11. Choke .............................................................................. 3
12. Piston ................................................................................ 3
13. Case ................................................................................. 3
14. Bit Bearing ....................................................................... 3
15. Snap Ring......................................................................... 3
16. Bit Retaining Rings........................................................... 3
17. Thrust Washers ................................................................. 4
18. Chuck .............................................................................. 4
19. Chuck Bushing ................................................................ 4
20. Drive Plates ...................................................................... 4
Section II Maintenance ..................................................... 5
Disassembly .............................................................................. 5
Inspection ................................................................................. 8
General Assembly .................................................................. 10
Feed Tube Assembly .............................................................. 10
Check Valve Assembly ......................................................... 10
Hammer Assembly ................................................................. 11
Section III Parts Identification........................................... 13
Champion 330 Exploded View ...................................... 13 & 14
Part Number Reference ................................................. 13 & 14
Section IV Air Consumption Charts .................................15
SectionV Lubrication .........................................................16
Section VI Storage ............................................................17
Short Term................................................................................ 17
Long Term ................................................................................ 17
Restarting ................................................................................ 18
Section VII Button Bit Maintenance .................................19
General ................................................................................... 19
Sharpening .............................................................................. 19
Section VIII Champion 330 Recommended Spares ...... 20
Page

04/23/10
MANUFACTURER OF DOWN HOLE HAMMERS AND BITS
WARRANTIES AND REMEDIES
LIMITED WARRANTY
Numa warrants that the Product will be new and free from defects in material and
workmanship under normal use as contemplated by this Contract for a period of six (6) months from
the date of shipment.
Except for the foregoing warranty, Numa disclaims all warranties and representations wherever
made, including warranties of merchantability, durability, length of service, or fitness for a particular
purpose.
Any alteration or modification of the original product without the express written consent of
Numa will void this warranty.
REMEDY
If, during such warranty period, Buyer promptly notifies Numa in writing of any defect and
establishes that the above warranty is not met, Numa shall either repair or replace the Product or
credit the customer, as it deems necessary to meet the warranty.
Such repair, replacement, or credit of Product shall constitute complete fulfillment of Numa's
obligation under this warranty, and upon the expiration of the original warranty period, all of
Numa's obligations hereunder shall terminate.
LIMITATION OF LIABILITY
Numa shall not be liable to Buyer whether in contract, in tort (including negligence and
strict liability), under any warranty or otherwise, for any special, indirect, incidental or consequential
loss or damage whatsoever, including (without limitation) loss arising from delay, cost or capital
and loss of profits or revenues. The remedies set forth in this Contract are exclusive, and the total
cumulative liability of Numa under this Contract or for any act or omission in connection therewith
or related thereto, whether in contract, in tort (including negligence and strict liability), under any
warranty or otherwise, is limited to the price paid by Buyer for the Product.
The WARNINGS, CAUTIONS and NOTES used throughout the text of this
instruction book are defined as follows:
WARNING A specific procedure or practice that must be strictly followed,
or a specific condition that must be met, to prevent possible
bodily harm.
CAUTION A specific procedure or practice that must be strictly followed,
or a specific condition that must be met, to prevent damage to
the equipment.
NOTE Important supplemental information.
Numa®,Champion
®®
®®
®
, and Patriot
®®
®®
®
are registered trademarks of Numa.

Champion
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330
MANUFACTURER OF DOWN HOLE HAMMERS AND BITS
Page 1
05/12/17
SECTION I
DESCRIPTION
GENERAL DESCRIPTION
The Champion 330 is a valveless, pneumatically operated tool designed to utilize
Numa 32" to 48" (813 mm to 1219 mm) diameter bits in rock formations under a wide range
of operating conditions.
The Champion 330 hammer design incorporates a thick wall case. The non ported case
design allows for a large bore diameter in conjunction with optimum life against abrasion. The
simple design of the Champion 330 provides performance and dependability without sacrificing
tool life.
The Champion 330 is designed for universal applications using air pressure from 100 PSI
to 200 PSI (6.8 Bar to 13.6 Bar) with compressors having capacities of 3000 CFM (1416 Litres/
Second) or more. Depending on the hole size, rod size and rock conditions, additional hole
cleaning air or foam may be required. When drilling conditions require supplementary hole
cleaning, additional hole cleaning air can be passed through the hammer by utilizing an
interchangeable choke. All standard hammers shipped from Numa have a blank choke
installed. Refer to page 15 for correct choke selection and pages 7 and 10 to facilitate the
removal and the installation of the choke.
Champion 330
Weight w/o Bit 12556 lbs. (5695 kg)
Outside Diameter 28" (711 mm)
Hammer Length:
Shoulder to Shoulder 89-1/2" (227 cm)
Shoulder to Bit Face 105-1/2" (268 cm)
Backhead API Thread 10 Beco Pin
Table 1-1 General Hammer Specifications
32" (813 mm) 4910 lbs. (2227 kg)
34" (864 mm) 5125 lbs. (2329 kg)
36" (914 mm) 5300 lbs. (2409 kg)
38" (965 mm) 6740 lbs. (3064 kg)
39-1/2" (1003 mm) 6925 lbs. (3148 kg)
42" (1067 mm) 7332 lbs. (3333 kg)
48" (1219 mm) 8350 lbs. (3787 kg)
Table 1-2 General Bit Specifications
NOTE
NUMA 32" TO 48" (813 MM TO 1219 MM) BITS ARE AVAILABLE IN A REVOLUTIONARY
FLAT FACE DESIGNS WITH LARGE AIR FLUSHING HOLES AND CHIP WAYS TO TAKE
ADVANTAGE OF THE CHAMPION 330 PERFORMANCE. OTHER SIZES MAY BE
AVAILABLE UPON REQUEST.

Page 2
Champion
®®
®®
®
330
MANUFACTURER OF DOWN HOLE HAMMERS AND BITS
05/12/17
FUNCTIONAL DESCRIPTION
1. BACKHEAD
The backhead connects the hammer to the drill rod with double start threads. It is
threaded into the top end of the case with a large cross section thread form and into
the drill rod with a standard 10" Beco pin thread. Wrench flats are provided for
disassembly.
2. CHECK VALVE SEAT
The check valve seat provides a replaceable sealing surface for the check valve.
3. CHECK VALVE HOUSING SPACER
The check valve housing spacer positions the check valve housing in the backhead to
insure proper movement of the check valve.
4. CHECK VALVE
The check valve maintains pressure in the hammer when the air supply has been
shut off. The check valve in the hammer balances the hydrostatic pressure in the
hole thereby preventing contaminants from entering the hammer.
5. CHECK VALVE SPRING
The check valve spring provides tension under the check valve to keep it closed. It is
compressed as the air is turned on.
6. CHECK VALVE HOUSING
The check valve housing guides the check valve and the check valve spring. The main
air supply is directed to the feed tube through ports located in the check valve housing.
7. BELLEVILLE WASHERS
The belleville washers keep the feed tube housing tight against the shoulder in the
hammer.
8. FEED TUBE RETAINER
The feed tube retainer keeps the feed tube seated in the proper location. The feed tube
retainer also allows air to flow to the piston and feed tube.

Champion
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MANUFACTURER OF DOWN HOLE HAMMERS AND BITS
Page 3
05/12/17
9. FEED TUBE HOUSING
The feed tube housing is aligned in the main bore of the hammer. It sits against a
shoulder in the case and is held in position by the backhead and belleville washer
combination. The feed tube housing locates and aligns the feed tube.
10. FEED TUBE
The feed tube supplies air to the piston. It seats on a shoulder in the feed tube housing
and is designed with a long bearing surface to maintain alignment in the feed tube
housing.
11. CHOKE
The interchangeable choke is located in the tip of the feed tube and is held in place with
a press fit. A set of two chokes is supplied with each hammer. By installing the correct
choke, the hammer can be fine tuned to the compressor package.
12. PISTON
The piston functions as the only moving part in the hammer, controlling the operational
air cycle. The percussive action of the piston striking the bit transfers the energy through
the bit in order to fracture rock formations.
13. CASE
The case is designed to contain the internal parts which make up the hammer
assembly. The case is hardened to resist wear and to extend life in abrasive conditions.
14. BIT BEARING
The bit bearing guides the top end of the bit to insure proper alignment between the
piston and the bit. The bit bearing is positioned into the chuck end of the case and is
held in place by the snap ring.
15. SNAP RING
The snap ring sits in a groove in the case and retains the bit bearing.
16. BIT RETAINING RINGS
The bit retaining rings are designed to allow the bit to move between the drilling and
cleaning positions and prevent the bit from coming completely out of the hammer. The
bit retaining rings consist of two matched halves and are held together with the bit
retaining ring o-ring.

Page 4
Champion
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330
MANUFACTURER OF DOWN HOLE HAMMERS AND BITS
05/12/17
17. THRUST WASHERS
Two brass thrust washers, one located between the backhead and the case and one
between the chuck and the case, provide for easy disassembly.
18. CHUCK
The chuck threads into the bottom end of the case with a large cross section thread
form. It has internal splines that transmit rotation to the bit through a set of delrin drive
plates. Wrench flats are provided for disassembly.
19. CHUCK BUSHING
The chuck bushing is a nylon insert located in the bottom end of the chuck to provide
a bearing surface between the lower bit shank and the chuck.
20. DRIVE PLATES
The plastic drive plates provide wear protection for the splines. They are inserted
between the chuck and the bit. A complete drive plate set is sent with each bit.

Champion
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330
MANUFACTURER OF DOWN HOLE HAMMERS AND BITS
Page 5
05/12/17
SECTION II
MAINTENANCE
DISASSEMBLY
••
••
•Maintenance should be performed in a clean environment.
CAUTION
USE CAUTION WHEN HANDLING DOWN THE HOLE HAMMER PARTS. NUMA HAMMER
PARTS ARE MANUFACTURED FROM HARDENED, HEAT TREATED MATERIALS. DROPPING
OR STRIKING THESE PARTS MAY CAUSE SEVERE DAMAGE. STRIKING THE HAMMER
PARTS WITH HAMMERS, CROWBARS OR LIKE INSTRUMENTS WILL VOID THE WARRANTY.
••
••
•Tools needed: hammer stand, 26" (660 mm) "J" or fork wrench (possibly incorporated
in the hammer stand), overhead crane or lift truck, pulldown visetong with a 28" (711
mm) diameter capacity or a self contained power wrench capable of 200,000 foot
pounds (27,624 KGM) of torque, 2" (51 mm) diameter brass rod or mild steel rod 3 to 5
feet (1 m to 1.5 m) long, snap ring pliers, a drift pin and several different sized
screwdrivers.
••
••
•Clean the outside of the hammer. This will insure a good surface to clamp on.
••
••
•Using an overhead crane or lift truck of appropriate capacity, place the hammer on a
hammer stand and secure it in the wrench. The chuck end can be held by the 26" (660
mm) flats, in the wrench. The backhead is also held in the 26" (660 mm) wrench. Place
the visetongs on the area of the case where the bit bearing is located when working on
the chuck end of the hammer. When working on the backhead end of the hammer,
place the chain vise on the area of the case where the feed tube housing in located.
Hammer Stand/Wrench Diagram
Figure 2-1
Pulldown Visetongs
Petol No. VTDA120
Force Direction Required:
15,000 - 25,000 lbs.
(6,800 - 11,400 Kg.)
Champion
330
Blocking to
height of stand
Hammer stand and wrench
combination, structural steel,
I-Beam, weld construction
bracing to suit.

Page 6
Champion
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330
MANUFACTURER OF DOWN HOLE HAMMERS AND BITS
05/12/17
CAUTION
THE ACCEPTABLE CLAMPING AREAS START 11-1/2" (292 MM) FROM THE CASE END, TO
AN ADDITIONAL 10" (254 MM) BEYOND THIS POINT ON BOTH THE CHUCK AND
BACKHEAD END OF THE CASE. PLACING THE VISETONGS ON THE AREA OF THE CASE
WHERE THE PISTON CYCLES CAN DISTORT THE CASE, RESTRICT PISTON MOVEMENT
AND VOID THE WARRANTY.
••
••
•With the chuck secured in the fork wrench (see figure 2-1), loosen the joint by turning
the case with the visetongs. Remove the hammer from the wrench and turn the hammer
end to end in the hammer stand / wrench. With the backhead flats secured in the fork
wrench (see figure 2-1), loosen the joint by turning the case with the visetongs.
••
••
•With the crane or lift truck, move the hammer into an upright position with the chuck end
down. With an adequate lifting device, lift and support the hammer while unscrewing
and removing the chuck, bit, bit retaining rings and bit retaining rings o-ring. After
setting the hammer down, and while lifting and supporting the backhead, unscrew and
remove the backhead from the case.
••
••
•Remove the backhead o-ring and thrust washer from the backhead.
••
••
•Remove the belleville washers from the top of the feed tube assembly.
••
••
•Remove the thrust washer from the chuck.
••
••
•Remove the drive plates from the chuck.
••
••
•Remove the o-ring from the bit retaining rings.
••
••
•Removal of the chuck bushing is not necessary for routine maintenance. If necessary,
position the chuck so the bit end is facing you. Locate the seam in the chuck bushing.
Insert a screwdriver into the slot in the middle of the seam and pry the chuck bushing
from the under cut. Remove the chuck bushing from the bit end of the chuck.
••
••
•Using a 2" (51 mm) diameter brass rod, slide the piston against the feed tube assembly
and push the feed tube assembly out the backhead end of the case.
••
••
•Slide the piston out the backhead end of the case.
••
••
•Lay the backhead on its side. Using a broom handle, go through the API thread end of
the backhead and tap out the feed tube retainer, check valve housing, check valve,
checkvalve spring and check valve housing spacer. The check valve seat will remain
in the backhead. This part only acts as a spacer and does not need to be removed.