Replacing T He Pilot/Pilot T Ubeassembly; Cleaning The Combustion Chamber Andflame-Arrestor - Kenmore 153.336340 Owner's Manual

6. Position the new thermocouple through the bottom opening
of the manifold component block (Figure 32). Be sure
igniter wire is positioned through the small opening of the
manifold component block.
7. Re-attach the burner. Note the orientation of the burner
(Figure 31.)
8. See "Replacing the Manifold/Burner Assembly."
"LOT . ,LOTB..CKET
_ _! o clip
OT TUBE _ MANIFOLD/BURNER
ooo.oPE°,.o
COMPONENT BLOCK
FIGURE 32.
FIGURE 33.
Replacing the Pilot/Pilot Tube Assembly
1.
2.
Remove the manifold/burner assembly. See "Removing
the Manifold/Burner Assembly."
Lift the retainer clip straight up from the back of the manifold
component block (using a flat-blade screwdriver), then
remove the manifold component block from the manifold
door (Figure 32.)
IMPORTANT: Be careful not to bend or alter the position of the
pilot tube. It will be used as a bending template for the new
pilot assembly.
3. Take off the burner by removing the two (2) screws located
underneath the burner. See Figure 31.
4. Remove and keep the screw securing the pilot assembly to
the pilot bracket. (Figure 34)
5.
Remove and keep the old pilot tube and thermocoupte.
NOTE: To prevent any bending of the pilot bracket, use
pliers to hold the pilot assembly bracket while loosening
the pilot nut.
6. Using the old pilot tube as a guide, bend the new pilot tube
to match the old one. NOTE: Make only the bends closest
to the pilot before going to the next step. (Figure 34)
SCREW
PtLOTTUBE
OTHER FITTINGS
NOT SHOWN
FOR CLARITY
7. Route the new pilot tube, thermocoupte, and igniter wire
through the manifold/burner door opening. (Figure 32)
8. Connect the new pilot tube and tighten the nut securing it
to the pilot assembly. NOTE: To prevent any bending of the
pilot bracket, use pliers to hold the pilot assembly bracket
while tightening the pilot nut. IMPORTANT: Keep the pilot
orifice in the pilot when making the connection. Do not
operate the water heater without the pilot orifice installed.
9. Install the thermocouple, making sure that it is fully seated.
10. Re-attach the pilot assembly to the pilot bracket and secure
using the screw removed earlier.
11. Re-attach the burner. Note the orientation of the burner
(Figure 31.)
12. Position the new pilot tube through the largest opening of
the manifold component block. NOTE: The largest opening
should be located at the top position. The igniter wire
should be located in the middle opening and thermocouple
in the bottom opening. (Figure 35)
PILOT TUBE
ITER WIRE
MANIFOLD COMPONENT BLOCK
FIGURE 35.
13. Reposition the manifold component block in the manifold
door opening and secure it with the retainer clip.
14. Carefully bend the new pilot tube and thermocouple to
match the bend of the manifold tube. NOTE: When bending,
DO NOT crimp or crease the pilot tube or thermocouple.
(Figure 32)
15. Before you proceed to the next step, install the new brass
ferrule nut in the gas control valve/thermostat's pilot tube
opening. HAND TIGHTEN ONLY.
16. See "Replacing the Manifold/Burner Assembly."
Cleaning the Combustion Chamber and
Flame-arrestor
1.
2.
Follow procedure outlined in "Removing the Manifold/
Burner Assembly."
Use a vacuum cleaner/shop vac to remove all loose debris
in the combustion chamber (Figure 36). Use compressed
air to clear any dust or debris that may have accumulated
in the flame-arrestor.
COMBUSTION CHAMBER
FLAME ARRESTOR
DOOR GASKET
BASE-RING
IGNITER WIRE
THERMOCOUPLE FIRST BEND(S)
FIGURE 34.
31
FIGURE 36.
3. Reassemble by following the procedure under "Replacing
the Manifold/Burner Assembly."