Replacement of Material Control Needle
1. Unscrew the spring bushing (Item 21).
2. Remove the spring spring (Item 22).
3. Remove the material needle (Item 4) with the driving bushing (item 9) and the
counter-screw (item 10) from the gun body. Remove the needle from the dring
bushing.
The distance between the tip of the material needle and the driving bushing should
be 78 ± 0.5 mm. Control the distance and ensure with the counter-screw.
Reassembly is performed in reverse order.
Replacement of Valve Cone
1. Unscrew the valve housing (item 24) from the gun body.
2. Remove the valve spring (item 25) and the valve cone (item 26) from the gun
body.
Reassembly is performed in reverse order.
Replacement of Defective Needle Seal Packings
1. Remove the material control needle as described in "Replacement of
Material Control Needle “.
2. Unscrew the needle packing gland (item 8) from the gun body
3. Remove the needle seal packing (item 7) from the gun body. Use a strong wire
with one end bent to form a small hook.
Reassembly of replacement parts is performed in reverse order.
Note
Prior to assembly all moveable and sliding parts should be lubricated with a non-aci-
dic, non-resinogenic grease.
Note
The wearing parts are shown in boldface print in the list of the replacement parts.
6 Cleaning
6.1 Safety
Warnings
• Prior to any service work all air and material inputs should be shut off - risk of
injury.
• Open fires, naked lights and smoking are prohibited in the working area. There
is an increased risk of fire and explosion, when spraying readily flammable
media, such as cleaning solutions.
• Follow the safety instructions issued by the manufacturer of the cleaning
media. Aggressive and caustic cleaning agents in particular represent health
hazards.
6.2
General Cleaning Procedure
The spray gun should be frequently cleaned and lubricated to ensure reliable ope-
ration and long life.
Caution
Never immerse the spray gun in solvents or other cleaning fluids as this will
impair the functional reliability and efficiency of the gun.
Caution
Do not use any hard or sharp-pointed objects when cleaning the spray gun, as
the precision-made parts can easily be damaged and are likely to affect your
spraying results.
Only use cleaning solutions recommended by the manufacturer of the spraying
material. These solutions should not contain any of the following constituents:
• halogenated hydrocarbons
(e.g. 1,1,1-trichloroethane, methylene chloride etc.)
• acids and acidic cleaning solutions
• regenerated solvents (so-called cleaning dilutions)
• paint removers.
These constituents cause chemical reactions with electroplated components
resulting in corrosion damage.
WALTHER PILOT is not liable for any damages resulting from improper treatment
of the gun.
The spray gun should be cleaned
• prior to every change of the spraying medium
• at least once a week
• as often as necessary because of the spraying medium used and the resulting
level of soiling.
7
8
Summary of Contents for PILOT Misch-N
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