Page 205 - CITS - Fitter Trade Practical - Volume -2

FITTER - CITS

Use a suitable spanner and loose the suction strainer.
Clean the strainer using kerosene and blow with compressed air.
Check for damages, if any replace with new filter.
Screw on the clean filter back into position.
Removal of filter in a closed type of reservoir

Already the procedure for the filter of a closed type of reservoir with removable top cover has been explained.
Other type of reservoir is explained below.
All sides welded reservoir (Fig 2)

Fig 2

Put off the hydraulic system.
Drain the oil from the reservoir.
Remove the inspection cover after unscrewing mounting.

Locate and unscrew the suction strainer.
Clean, strainer with kerosene and blow it with compressed air.
Clean inside of the reservoir thoroughly.
Screw the suction strainer after inspecting it for damages.
Replace inspection cover and gasket, tighten mounting screws.

Refill the oil in the reservoir after filtering the oil using mesh.
Check for oil leakage through inspection cover. Confirm no leakage of oil.
Check for oil level.

Now the system is ready for use.
Externally mounted suction strainer (Fig 3)

To dismantle this type of suction strainer the steps are as follows
Put off the hydraulic system.
Unscrew both the cap nuts of the lines coming to the filter unit and going out of it.
Hold the filter unit in the benchvice and unscrew the mounting bolt. (Fig 4)
Remove the filter insert clean/replace filter insert.

Clean the casing thoroughly.
Place the insert and screw the mounting bolt.

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CITS : C G & M - Fitter - Exercise 90