GUSMER GX-8, Руководство по эксплуатации, Страница: 23 / 32

Operating Manual Servicing Procedures
4/21/99 23
Air Piston O-Ring and Cup Seal Replacement
TOOLS REQUIRED
•
3/8” x 5/16” Open End Wrench (P/N 1982A)
•
1/2” Combination Wrench (P/N 1986)
•
Retaining Ring 45º Pliers (P/N 32982)
•
6” Pliers (P/N 0906)
•
9/64” Ball Point Hex Key (P/N 0902-9/64)
•
5/32” Hex Key (P/N 0902-5/32)
•
3/16” Hex Key (P/N 0902-3/16)
•
5/16” Spintite (P/N 0904A)
WARNING: D
ISCONNECT THE CHEMICAL HOSES AND AIRLINE BEFORE SERVICING THE GUN
.
I
N ADDITION
,
BE SURE TO CLEAN THE
“C
ENTER
L
INE
C
OMPONENTS
”
WITH THE
G
UN
S
ERVICE
K
IT PRIOR TO REMOVAL FOR SERVICING AS THEY ARE EXPOSED TO THE CHEMICAL
1. CLOSE BOTH MANUAL VALVES- Using the 5/16” Spintite, turn each Manual
Valve fully clockwise.
NOTE:
If only the End Cap O-Ring
requires replacement see the
End Cap O-Ring and Cup Seal
Replacement section of this
manual.
2. REMOVE THE GUN FROM THE COUPLING BLOCK- Using the 5/16" Spintite,
remove the Coupling Block Mounting Screw. Separate the gun from the Coupling
Block. Using a rag soaked with Gun Cleaner, wipe clean the face of the Coupling
Block to prevent material build-up.
3. CLEAN THE GUN- See the Cleaning Procedure section of this manual.
4. DISCONNECT AIR SUPPLY FROM GUN
5. LOOSEN PACKING NUT- Using the 3/8” x 5/16” Open End Wrench, loosen the
Packing Nut.
6. REMOVE GUN BLOCK SCREW- Using the 5/16” Spintite, remove the Gun Block
Screw.
7. REMOVE GUN BLOCK- Pull Gun Block off Valving Rod being careful not to bend
the Valving Rod.
8. REMOVE THE VALVING ROD- Using the 3/8” Wrench, on the hex shaped
Valving Rod Shank and the ½” Wrench on the Jam Nut. Loosen the Jam Nut by
turning it clock wise. Continue to back the Jam Nut away from the Valving Rod
Shank by three or four full turns. Remove the Valving Rod by unthreading the
Valving Rod from the Piston Rod. Remove the Jam Nut from the Piston Rod
9. DISENGAGE THE SAFETY STOP- Push in and turn the Safety Stop knob
counterclockwise to place the gun in the Open detented position.