Australian Railway Kits NSWGR D57 Manuale di istruzioni - Pagina 5

Sfoglia online o scarica il pdf Manuale di istruzioni per Giocattolo Australian Railway Kits NSWGR D57. Australian Railway Kits NSWGR D57 18. 4-8-2 locomotive and tender kit

Stampa la pagina

The crankpin fixers (174x8) and axle covers (162x8) should not be permanently fitted until the chassis has been completed

and painted. Check that the rods revolve freely; should binding occur, locate where this is happening and gently ease out the

offending hole in the coupling rod with a rat-tail file, removing the minimum amount to achieve free movement. Sometimes

swapping the coupling rods around (i.e. left to right) can overcome binding.

Cylinders.

Take the cylinder block (175) and drill as shown to accept the spigots on the five crosshead guides. At this stage it is best to

drill all holes as shown in the front footplate (183), before fixing the front footplate to the cylinder block (175). Carefully

check the castings against the drawings to correctly identify the different crosshead guides. Fix the rear valve crossheads

guides (178x2), front valve crosshead guide (centre) (179), and front valve crosshead guides (184x2). Next drill through the

front and rear crosshead guides (184x2) and (178x2), 1.5mm, and front crosshead guide (centre) (179) 1.Omm. Now add the

front cylinder covers (176x2) and rear cylinder covers (177x2), noting that the small cutout on the rear cylinder covers is to

the top. Using the cutout on the rear cylinder cover as a guide, drill 0.9mm to a depth of around 2mm for later fitting of the

slide bars. Fix in place rear cylinder cover (centre) (180), and add cylinder drain cocks (181x2).

Drill the conjugating valve gear bracket (185) 0.7mm as shown before fixing to the front footplate (183). Drill the large

conjugating beam (211) and small conjugating beam (212) as shown (0.5mm and 0.7mm) before removing them from the

casting sprue. Now position the valve spindle (210) into one end of the small conjugating beam (212) and place this into the

end of the large conjugating beam (211) - retain it with 0.5mm wire and spot solder or crimp the wire to hold in place - if

soldering be careful not to solder the joint, these parts must move freely. Place the large conjugating beam (211) into the

conjugating valve gear bracket (185) and retain with 0.7mm wire, at the same time placing valve spindle (210) inside the front

valve crosshead guide (centre) (179). Place this assembly aside for later fixing to the chassis.

Valve gear.

The following instructions cover the valve gear assembly, probably the most complicated area of construction. Please study

the drawings carefully, noting that by following the lines you will see how the different pieces inter-relate. Note that asterisks

(*) are used to show the relationship between parts in different areas of the drawing.

Take one radius rod assembly (203xpair) and twist the front rod through 90° as shown. Now pass the rear end of the radius rod

assembly through the small hole in the front of the motion bracket (194) so that it locates in between the motion bracket

backing plate (195) and the motion bracket facing plate (196). This is a tricky job, have patience, it does fit. Repeat for the

other side. Correctly position the rear end of radius rod assemblies (203xpair) in the motion bracket (194) and add the

expansion link assemblies (206xpair) before retaining these with 14BA screw (205x2) and nut (207x2). At the rear, the radius

rod assembly is pinned to the motion bracket with 0.7mm wire, at the same time fitting the reversing lever (209) to the L/H

side.

Now take the front cylinder block/pilot deck assembly, locate the rods from the left and right radius rod assemblies (203xpair)

into the rear valve cross head guides (178x2) -these are rods you previously twisted through 90°. Carefully work the eyes of

the rods through the cylinder blocks while positioning the cylinder block/front pilot assembly onto the chassis. Using screws

(182x2) attach the cylinder block/front footplate assembly to the chassis. Fix the motion bracket (194) to the chassis.

Locate the eyes of the radius rod assemblies (203xpair) into the ends of the conjugating beams and retain using 0.5mm wire.

Take the crossheads (199xpair) and trim to 16mm as shown. Remove the slide bars (198xpair) from the etched fret, fold as

per inset drawing and locate the crosshead (199) into the slide bars. Place the front pin of the slide bars into the rear of the

cylinder and fix the tabs on top of the slide bar to the motion bracket (194) - note that they fit against the inside edge of the

motion bracket backing plates (195). Fix the slide bar facing plates (200xpair) to the slide bars taking care not to get solder or

glue inside the slide bars.

Using 14BA screw (201x2) and nut (204x2) fix the connecting rods (202xpair) and the small arm of the radius rod assembly

to the crosshead (199xpair) - do not over tighten the screw. These parts must move freely. Place the other end of the

connecting rod (202xpair) onto the crankpin of the second driving wheel followed by crankpin fixer (208x2) and the eccentric

arm of the expansion link assembly (206xpair). As previously advised this can be kept in place temporarily with small

diameter tubing. The setting of the correct angle of the eccentric arm (as per Drawing 8) should be left until the model has

been completed.

Fit dummy crosshead and slide bar (197) between rear cylinder cover (centre) (180) and motion bracket (194). Drill the front

brake cylinders (154x2) 0.5mm and locate the spigot on the brake roding (170x2) into the cylinder before fixing it to the

recess in the chassis. Fix saddle plate (219) to the top of the cylinder block.

Solder power clips (140) and (146) to the motor leads as shown. Mount the motor (139) to the motor mounting bracket (138)

using screws (141x2) at the same time fixing the positive power lead. Now assemble and fit the drawbar using (145) through

(153) as shown.

Page 5