Set B, boiler and fittings Regner order nbr. 20200

Figure 7

When assembling this set I was confronted with poor quality of some threaded holes, during mounting the steampipe flange onto the backside of the boiler I twisted a brass screw such that the head came off leaving a broken screw behind in the boiler. See figure 7. With patient and a tweezers I managed to get the broken screw out, but it wasn't pleasant. After checking the parts it appeared also that the pitch-diameter of the holes not completely lines up with the counterpart, therefore I decided to enlarge the holes in the flange a little.

The rubber O-ring, used for gasket, under the flange for the piping leading to the lubricator in smokebox is difficulty to place. The groove to hold this O-ring is to small; the consequence is that the ring will not stay in place when mounting the flange. Due to the possibility the O-ring will shift when tightening the screws this gasket was one of the first items that I checked for steam tightness during the first steam-up.

The gasburner-tube should be pushed into the flue and secured by a screw, this has a very tight fit and I reduced the diameter of the tube a little to reduce the press-in force. The press-fit that secures the smokebox-door into de smokebox is very tight; the suggested hammering-in was too rude for my appetite. Also here the diameter is somewhat reduced so it can be assembled with less violence.

My initial thought to place the gas storagetank on the right-hand side of the engine to get a better view on the tubular glass water level gauge, in this locomotive (99.211) it is not possible. The footplate for 99.211 is prepared to mount gas storagetank at the left side only.

The pressure gauge is legibly from the right-hand side, as gasket between the manifold and the pressure gauge paper washers are used. See arrows figure 8. The supplied copper gasket couldn't make a steamtight joint due to the uneven paint layers. In the general rolled PTFE-tape or white silicon-kit is used as gasket material.

The glass water level gauge must by fitted without mechanical stresses. This also counts for the underside of the glass, if the bottom is resting on the lower connection to the boiler you not only close the entrance partly off but also the glass gets mechanical loaded during warming up and cooling down. Due to this phenomena I lost one glass water level gauge soon after one of the first steam sessions, fortunately a spare glass is supplied. The underside of the glass no longer rests on the bottom and a better connection between the water in the boiler is made resulting the indication of the water level is more accurate.

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