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Before assembling the boiler it is necessary to getrelevant technical documentation. Detailed calculations on this topic can be found at the forums of power engineers and heat engineers. Boiler projects include not only drawings and specifications, but also recommendations for the assembly and operation of the boiler. The next stage should be the purchase of materials on the list, usually including black sheet metal, sheet stainless steel, hardware, furnace doors, flaps, grates, water fittings of large sizes and heat insulating material.

Boiler body assembly

The boiler body has double walls, a spacebetween which is filled with refractory heat-insulating material (sand of fine fraction or mineral sealant). The best way to weld the boiler is at the installation site. First, weld internal, then outer walls. In the lower part of the boiler, a septum separating the furnace from the ash hopper is welded. On the inner surface welded fastenings for the bars. Everywhere from the inside of the walls are welded stiffeners and studs, connecting the inner and outer walls. Joints and corners should be additionally reinforced with a steel strip or corner. In the front walls you need to immediately cut out the windows of the combustion chamber and the ash hopper: drill holes at the corners, cut off the intervals with the Bulgarian.

Installation of grate and heat exchanger

The grates are mounted on welded to the sidesthe inner chamber of the shoulders, which have locating pins of the lattice position. A supporting frame is mounted on top of the grates, on which the heat exchanger tank is semi-rigidly mounted. Fixation of the tank is carried out by overhead staples and position limiters.

Installation of furnace doors and chimney duct

When the walls and interior equipment are assembled,a partial laying of the heat-insulating material is carried out. They fill all the free intervals up to the bottom level of the ash-bin door, then the threshold and walls of the opening of the future door are welded. The bookmark continues to the lower level of the combustion chamber window, after which the window opening of the furnace is welded again. When the door openings are finished with metal, the doors are installed. The chimney channel is mounted in the upper part of the inner chamber and is taken out to the front wall of the boiler.

Sealing of the boiler

At the conclusion of the work,inner chamber, passing through it the heat exchanger tubes, and carefully it is scalded. The final laying of the heat insulator and the installation of the top cover, through which the supply and return pipes are also passed, are also made. After this, the boiler is to be painted and connected to the heating system.

You will need

• 1. Workbench.
• 2. Tool for straightening and straightening with staples, puller and spotter.
• Welding machine or semiautomatic machine.
• 4. A set of metalwork tools.
• 5. Bulgarian or pneumatic chisel.

Instructions

1

The removable thresholds are fixed, as a rule,self-tapping screws. If the threshold is not too bad, remove it and straighten it on the workbench with the straightening and straightening tool. Before reinstallation, cover the inner surface of the threshold with an anti-corrosion compound. If the threshold is severely damaged or has through corrosion, replace it with a new one.

2

Fixed, slightly damaged thresholds withoutExpressed deformation folds straighten the hood from the outside. To do this, first weld special brackets, and then perform sequential stretching with an inertial puller or spotter.

3

For repair of non-removable threshold with damagesof medium gravity, first dismantle doors, seats and floor covering in the repair area. The first way to repair: from the side of the threshold, cut out the window, enter into it an anvil or hydraulic device, with which you draw the hood of the repaired area. After restoration, the window is brewed with a suitable sheet of metal, and the welding seam on the outside is flush with tin solder.

4

The second way: perform two transverse cuts under the hole on top of the threshold, and then disconnect the welding points. Through the partially opened cavity, enter the anvil and straighten it. Then open the opened hole and brew.

5

In case of damage to the threshold directly underdoor, cut out the damaged area so that the rest of the threshold does not have any damage. Make a new part, adjust it to the remote site and weld.

6

With a serious degree of damage to the threshold, cut out the area with damage using a pneumatic chisel or bulgarian. Cut out the cuts around the front or rear door or at the bottom of the middle rack.

7

If the damage has not only a threshold, but alsostand, replace it with the threshold. Cut the spar and the middle stand against the roof. When cutting the area to be replaced, monitor the side member. If necessary, straighten it with the straightening and straightening tool.

You will need

• - body chisel;
• - Clamps;
• - hole puncher;
• - grinding machine;
• - electric drill;
• - electrowelding machine.

Instructions

1

First, remove the car door, then free up space for repairs, removing the aluminum door for this purpose and lifting the mat partially.

2

The threshold should be deleted in parts. First remove the part that is located near the front door, and then near the back door, after which you can dismantle the middle. There are two ways to do this. In the first case, mark spot of spot welding at the threshold, and then drill them with a thin drill. If you decide to use the second method, then instead of a drill you will need a Bulgarian, with which you can remove these points.

3

After removing the threshold, the place where he wasis located, clean from rust and dirt. If necessary cut out the rotten areas. This is done so that in the future on this place it would be easy to mount a new threshold.

4

Before mounting the threshold, adjustits connector. From the front of the machine it must be connected to the site of the old connector, and in the rear part the new threshold must lie on top of the old one. Only after docking a new threshold you can weld it, after which you must shorten the amplifier on the car and make a small cutout in the middle of the rack. Weld the connector to the amplifier can only be after alignment of these parts.

5

Fit the outer panel of the threshold, after whichattach it to the location of the future location. Now you can weld the threshold. It is necessary to start this procedure from its top part in order to avoid the occurrence of large gaps.

6

Thoroughly clean the welding spots and pinch them, then prime and paint the threshold itself. Doors for the car can be put only after the paint dries completely.

You will need

• - Drill;
• - carbon dioxide welding;
• - Bulgarian;
• - sheet of iron.

Instructions

1

Get ready for work: open the windows, unplug the battery, prepare a fire extinguisher (make sure it's working). Disassemble the car interior in the place where you will repair.

2

Just install the car, adjust the doors to the gaps.

3

Attach the prepared new part, markplace of the intended joint. Cut the old threshold with a grinder along the welds, but leave a small margin (about 10 mm). To remove the contact welding, which is welded to other places, use a drill, take a drill 8-10 mm. Remove the old threshold.

4

Strip all drilling locations, new partreplace it with the old one. Adjust by gaps and doors. The threshold is fixed and once again mark the places for joints. Leave the remaining stock, lead him by the arch (rack) by 5 mm and grab it. Next, adjust the threshold at the joint.

5

Make holes at a distance of 30 mm,Use a drill with a 5 mm drill, but not less. Strip the place for future seams. Then set the threshold, pre-adjust and secure it and grab it with welding.

6

Cook those places where solid seams. Do this by short seams (dots) with interruptions. Breaks are necessary to cool the metal. Pay attention to the outer seams, they should not be with gaps that are not welded.

7

Fill the holes with metal. Lastly, weld the repaired threshold from the bottom. Strip the threshold from the incrustations obtained when working with the Bulgarian.

8

Treate the threshold with the help of the pick-up from the inside, and outside with anticorrosive primer.