Top Section Pilot Check, Replacement; Pilot Adjustment Valve Replacement - Vulcan-Hart 148L Service Manual

TOP SECTION PILOT CHECK, REPLACEMENT

TOP SECTION PILOT CHECK
If all other systems have been checked and pilot will not stay lit, cleaning or replacement of pilot may be necessary.
TOP SECTION PILOT REPLACEMENT
7
TOOLS REQUIRED: /
1. Disconnect unit from main gas supply and allow unit to cool.
2. Remove defective pilot from pilot tube.
3. Check pilot for blockage.
4. If blockage is found, clean pilot tip and replace or install new pilot tip.
5. If blockage is not found but pilot appears to be malfunctioning, check pilot tube and pilot adjustment valve for
obstructions.

PILOT ADJUSTMENT VALVE REPLACEMENT

TOOLS REQUIRED: 7 /
1. Disconnect unit from main gas supply.
2. Disconnect pilot tubing (Fig. 46).
3. Remove valve from unit manifold.
4. With pipe dope covering the threads, install new pilot valve by reversing procedures 1 through 3.
" open end wrench.
16
" open end wrench, pipe wrench or a 6" adjustable wrench.
16
Fig. 46
— 37 —