GUSMER GAP Pro, Operating Manual, Page: 15 / 26

Operating Manual Servicing Procedures
3/10/04 15
1. PERFORM SHUTDOWN PROCEDURE- See the Daily Shutdown Procedure on
Page 12.
2. REMOVE THE FLAT SPRAY TIP ASSEMBLY- Using the 6” Adjustable
Wrench remove the Flat Tip Assembly from the end of the Mixing Module.
NOTE:
If the gun has a Round Pattern
Spray Tip, skip Step 2 and proceed
to Step 3.
3. REMOVE AIR CAP- Remove the Air Cap from the front of the gun by turning it
counter-clockwise.
4. REMOVE THE GUN FROM THE SIDE BLOCKS- Using the 5/16” Spintite,
alternately loosen the Side Block Mounting Screws. Carefully separate each Side
Block from the Gun Block. Wipe mating surfaces clean with a rag soaked in gun
cleaner. If the Side Blocks require servicing see the Side Block Service Procedure
on page 13.
NOTE:
Consult the GAP PRO Spray Gun
Parts Identification Manual
(P/N 36943-ID) for specific
Part Numbers.
Figure 9. Mixing Chamber and Gun Block Removal/Installation
5. REMOVE AND SERVICE THE GUN BLOCK- Using the 5/16” Spintite, remove
the two Gun Block Mounting Screws. Slide the block away from the gun. Wipe
mating surfaces clean with a rag soaked in gun cleaner. Clean the Gun Block with
gun cleaner and Brass Brushes to remove any built up foam, crystallized Isocyanate,
etc. This is important to ensure unrestricted movement of the Mixing Chamber.
6. REMOVE AND SERVICE THE MIXING CHAMBER - Using the 3/16” Open
End Wrench or Needle Nose Pliers, hold the end of the Piston Rod. Turn the Mixing
Chamber by hand counter clockwise until it comes free. Clean the Mixing Chamber
with gun cleaner and clean out drills as required. Inspect it for damage, and replace
if necessary.
7. REINSTALL THE MIXING CHAMBER- Using the 3/16” Open End Wrench or
Needle Nose Pliers, hold the flat end of the Piston Rod. Thread the Mixing Chamber
onto the end of the Piston Rod by hand.
8. REINSTALL THE GUN BLOCK - Slide the Gun Block over the Mixing Chamber
and toward the gun. Using the 5/16” Spintite, install the Gun Block Mounting
Screws. Make sure to sufficiently tighten the screws equally to prevent leakage.