Standard Valve Removal And Replacement - Thermador Pro Grand PRD304EG Service Manual

Service Manual for Thermador Pro Grand Dual Fuel Ranges:
Gas Leaks
With electrical power off, carefully check for gas leaks at each gas
component that was removed, replaced, or otherwise serviced using a
gas leak detector or bubble test.
4.5.2

Standard Valve Removal and Replacement

The standard valves are for the non-XLO burners only [right side, and
also on some models for the left (but not far-left) side].
Be sure to check QuickFinder for relevant information, documentation,
and the correct part number when replacing this component.
Figure 74: Typical Standard Valve
1. Follow all safety precautions and steps in Preparing the Range for
Servicing, page 21.
2. Follow all steps in Accessing Components under the Maintop,
page 21.
3. Remove knob from valve stem by slowly pulling knob straight out,
away from control panel.
4. Using a 9/16th inch wrench, remove the gas tube by unscrewing
the hex nuts connected to the standard valve and to the jet holder
assembly. Be careful not to bend the gas tube.
5. If a burner support rail obstructs access to the standard valve,
then remove the burner support rail (with jet holder assemblies
attached) by following the steps in Removing the Burner Support
Rail, page 24.
58300000157422_ARA_EN_A
PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG
6. Using a 1/4 inch nut driver or a 1/4 inch socket wrench/ratchet,
remove and retain the valve screw (that secures the standard
valve onto the manifold) by accessing it from under the chassis
base, through the corresponding access hole (the oven door must
be opened or removed (see Figure 75 and Figure 76). Be careful
not to lose the rubber washer attached to the screw.
7. Remove the standard valve and (connected) microswitch from the
manifold (see Figure 77, page 41). Be careful not to lose the red
rubber washer attached to the standard valve.
8. Detach the standard valve from the microswitch by removing and
retaining the screw and then pulling the microswitch off the
alignment pin on the standard valve (see Figure 77, page 41).
NOTE: You do not have to detach the wires connected to the
microswitch terminals if you are just servicing the standard valve.
9. Replace the standard valve if needed.
Figure 75: Valve Access Holes on Typical Range
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