Dynapac CA 250D Workshop Manual - Page 9

Browse online or download pdf Workshop Manual for Construction Equipment Dynapac CA 250D. Dynapac CA 250D 11 pages. Converting drum std/d to p/pd

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FITTING

Fig. 12 Scrapers

1. Scraper blade

2. Screws

Fig. 13 Modifying CA 250 to PD

DISMANTLING

Fig. 14 Marking the pad halves

16. The pad shell is now fitted and the roller is ready for

Before dismantling the pad shell, mark the halves in

some permanent way to show how they are positioned

in relation to each other.

The hole pattern and any wear to the shell necessitate

refitting the shell to its initial position.

CA 250/252/262 W1065EN2

Adjust the scraper between scraper tooth and drum

shell to a distance of about 20–25 mm (3/4"–1").

It is important to remember that the drum tends

to move as the machine turns. Consequently,

if adjustments are made closer than the values

specified above, the scrapers might be dam-

aged or drum wear may increase.

Torque-tighten the four bolts according to drawing

38 22 20.

operation.

After a short test-run of about 1–1/2 hour,

retighten all of the bolts that have been fitted,

and again after another 4 hours of operation.

This is necessary to compensate certain

settling of the drum shell. If retightening is

neglected, the shell may rotate on the drum

and result in serious damage to the pad shell.