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LIT-118     PAGE 1 of 4

Adjusting The Handpiece To Fit You

With the locking ring slightly loose, you are able to turn the handpiece body 

and knob independently. Position the Quick Change holder with the graver 

“point” down. Rotate the knob until the hose position is comfortable, then 

tighten the locking ring.
You can also extend the length of the handpiece a little by unscrewing the knob 

and body even more. NOTE: By extending the length you may notice a loss of 

power depending on the type of work you are doing.

How To Attach A New Hose

Loosen the locking ring. Remove the knob from the handpiece. Remove the 

hose by cutting it off close to the knob. With a small punch, push the hose / 

brass fitting back into the knob body. Remove the brass fitting (#004-409) from 

the hose. Feed the new air hose through the hole in the knob (

Fig. 1

). Insert the 

brass fitting into the end of the new hose, making sure it is fully seated. 
If needed, lubricate the fitting first to help it slip into the hose easier. Then apply 

a small amount of water or oil around the outside end of the hose next to the 

brass fitting and pull the hose back (

Fig. 2

) into the knob until you see the tip of 

the brass fitting protrude through the side of the knob. This must be an air tight 

fit, so you will have to pull somewhat hard (a few pounds of pressure, at least).

Maintenance

Keeping the 901 clean on the inside. Problems will occur if oil or moisture gets 

into the handpiece, especially on the piston. If you notice a loss of power or 

erratic performance, first check if the receiver (chuck) is tight in the handpiece 

body. Using a cresent wrench or pliers with a graver inserted in the QC Holder, 

gently tighten receiver clockwise (

Fig. 3

) If erratic performance continues, then 

disassemble and clean the handpiece. To disassemble the handpiece, use the 

crescent wrench or pliers to grip the graver (

Fig. 3

) and turn it counterclockwise 

to loosen the chuck retainer. Continued on page 2.

901™ QC & 901™ Airtact Handpiece

INSTRUCTIONS • #004-901, #004-910, #004-901-AT, #004-901-ATSS, #004-953, & #004-953SS

Standard Spring

Fine Spring

Normal Operating Range

18-22 psi (1.2-1.5 bar) / 1400 - 3400 spm 12-15 psi (0.8-1.0 bar) / 1600 - 3600 spm

Recommended Initial Setting

19 psi (1.3 bar) / 2700 spm

13 psi (0.9 bar) / 3000 spm

PSI: Pounds per Square Inch  •  Bar: Unit of Measurement  •  SPM: Strokes Per Minute 

LOCKING RING 

Loosen first

FIG. 1

Lubricate end 
slightly with 
water or a 

small

 

amount of oil.

FIG. 2

LOOSEN

TURN COUNTERCLOCKWISE

TIGHTEN

TURN CLOCKWISE

FIG. 3 

#004-901 & #004-910:

 Compatible GRS

®

 systems include the GraverMach

®

 AT, GraverMax

®

 G8, GraverMach

®

GraverMax

®

 SC, GraverSmith

®

, and Classic GraverMax

®

 / GraverMate

®

 machines.

#004-901-AT, #004-901-ATSS, #004-953, & #004-953SS: 

Compatible GRS

®

 systems include  GraverMach

®

 AT, or an 

Airtact Control System (#004-935) connected to a GraverMax

®

 G8, GraverMach

®

, GraverMax

®

 SC, GraverSmith

®

, or 

Classic GraverMax

®

 / GraverMate

®

 (with Airtact Filter Hook Up Kit) machines.

Содержание 901 QC

Страница 1: ... 901 clean on the inside Problems will occur if oil or moisture gets into the handpiece especially on the piston If you notice a loss of power or erratic performance first check if the receiver chuck is tight in the handpiece body Using a cresent wrench or pliers with a graver inserted in the QC Holder gently tighten receiver clockwise Fig 3 If erratic performance continues then disassemble and cl...

Страница 2: ... sheet for adjusting graver and hose position Quick Change Holder Hint Synthetic Lube or Teflon Grease on the shaft of a quick change holder will make them easier to slip in and out Fine Spring Option The Fine Spring offers you the option to tune the 901 s power for finer engraving work With this spring in the handpiece the air pressure will need to be approximately 14 psi To Change Springs Place ...

Страница 3: ... 605 004 409 004 949 SS 002 759 004 405 004 403SS 004 406 V3 004 411 V2 022 284 004 414 002 948 004 407 022 285 004 408 004 944 044 303 PART QTY DESCRIPTION 002 605 1 WRENCH 5 64 ALLEN 002 759 1 O RING 0 625 O D 0 500 I D 002 948 2 O RING 0 250 O D 0 125 I D 004 403SS 1 LOCKING NUT 004 405 1 HANDPIECE BARREL 004 406 V3 1 PISTON 901 HP 004 407 1 ANVIL 004 408 1 TOOL RECEIVER 901 004 409 1 HOSE BARB...

Страница 4: ...NG M 063 IDTUBE F LUER 024 201 1 PH1 X 50 MM SCREW DRIVER FOR AIRTACT PALM PADS 044 130 1 TUBING PU CLR 0 125 OD 0 063 ID 044 232 1 BRAIDED SLEEVE 0 313 OD NYLON 044 303 2 W ADHESIVE 900 Overlander Road Emporia KS 66801 USA 800 835 3519 620 343 1084 Fax 620 343 9640 hello grs com www grstools com Printed in USA Products made in USA All rights reserved 2020 Glendo LLC Last Update 2020 03 24 901 Pal...

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