Instruction 24-9435
28
Fyrite Tech
5.8 O
2
Sensor Replacement
Be sure to perform all of the checks listed in Sec tion 4.11 to ensure that
the oxygen sensor needs to be replaced.
Material Required:
• Oxygen Sensor with Gasket, P/N 24-8106G
• #1 Phillips Screwdriver
Procedure:
1. Disassemble the analyzer as follows:
a. Remove the battery cover and the batteries, uncovering one of
the cover hold-down screws.
b. Remove and set aside all four cover hold-down screws.
c. With the analyzer on its back, remove the front cover, laying it
face down to the left of the body.
d. Carefully remove the circuit board, slipping off the battery con-
nec tor on top, and then laying the circuit board face down in the
top cover.
2. Slip off the oxygen sensor’s electrical con nec tor from the circuit
board. Then push down; twist counterclockwise; then pull the oxy-
gen sensor out of its socket (see Figure 5-3).
3. Using the old sensor as a guide, remove the paper backing from the
new sensor gasket contained in the re place ment kit, and adhere it
to the new sensor.
4. Properly dispose of the old oxygen sensor (see the in struc tion sheet
that comes with the new sensor).
5. Mount the new oxygen sensor in its socket.
6. Reassemble the analyzer.
Note:
The sensor may take several hours to sta bi lize after
being connected to the printed circuit board.
