G643(E) Service Manual Chapter 6. LPG FUEL DELIVERY SYSTEM 221
4. Clean the heavy end deposits from the mixer body
with solvent. Be sure the mixer body is completely
dry before installing the new air-valve assembly.
Replace the air-valve assembly as shown (Figure
M7).
5. Place the alignment mark on top of the air valve
assembly toward the fuel inlet of the mixer; this
places the small notches in the fuel metering valve
(fuel cone) inline with the fuel inlet and the large
notches of the fuel metering valve “cone”,
perpendicular to the fuel inlet of the mixer. Now
reinstall the air-valve spring and diaphragm cover
(Figure M8).
6. Tighten the cover fastners and reinstall the mixer
on the engine (Figure M9).
CA100 Disassembled Service
1. Clean the air valve assembly with soap and warm
water to remove heavy-end deposits. Inspect the
fuel metering valve and sealing ring for wear.
Replace worn components as necessary.
Replace all gaskets before assembly.
Clean the mixer body (casting) with a parts cleaning
solvent. Be sure to remove all seals and gaskets
before cleaning the casting with solvent. Make sure
all parts are completely dry before re-assembly.
NOTE
For re-assembly of the CA100
reverse the disassembly steps.
WARNING
DO NOT spray car carburetor cleaner or
solvent into the mixer while installed on
the engine. These chemicals may damage
the oxygen sensor and cause pre-mature
failure of the catalytic muffler.
Figure M8
Figure M9
Figure M7
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