Emerson OCX 8800 instruction manual Remove Eductor, Eductor Alignment Matchmarks

Instruction Manual

IM-106-880, Rev 1.0

January 2007

Remove Eductor

OCX 8800

The O2 cell and heater strut assembly (9, Figure 7-3) and the COe sensor assembly (5, Figure 7-6) must be removed before you start this procedure.

1.Use straightedge to matchmark alignment of eductor flat and elbow, as shown in Figure 7-8.

Figure 7-8. Eductor Alignment

Matchmarks

Eductor Flat

Straightedge

Matchmark

37390036

2.Unscrew terminal block mounting (13, Figure 7-6). Move terminal block mounting away from eductor (6).

3.Unscrew eductor holder (14) with eductor (6) and fittings (12 and 15) from sensor housing (7).

4.Clamp flats of eductor (6) in jaws of bench vise.

Use heat resistant gloves when removing mating parts from the eductor. The mating parts are bonded with a thread sealing compound. The compound softens at 450°F (232°C). The heated parts can cause severe burns.

5.Use a propane torch to heat the eductor (6) to 450°F (232°C), minimum. Apply the heat near the screw threads.

6.While heating the eductor (6), use wrench to apply removal torque to elbow (12), eductor holder (14), or tube fitting (15) until the thread sealant softens. Remove mating parts (12, 14, and 15).

7.Use MEK or methylene chloride solvent to clean thread sealant residue from the pipe threads of the mating parts. Refer to applicable MSDS sheet for solvent handling precautions.

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