HEXA

GENERAL

3.1.3 RECOMMENDED FUEL

High Speed diesel conforming to IS1460 or EN 590

or equivalent is recommended to be used as fuel. At

very low temperature, fluidity of diesel may become

insufficient due to paraffin separation. It is therefore

necessary to mix supplementary fuel with summer

or winter grade diesel. The supplementary fuel to be

used is kerosene or aviation turbine fuel.

Ratio for mixing of supplementary fuel and diesel

are shown in the table.

Outside ambi-

ent Temp up to

ºC

Percentage (%)

Summer

Grade

Diesel

Supplementary

Fuel

Upto 0ºC

100

0 ºC to - 10 ºC

-10 ºC to -15 ºC

Care should be taken that the diesel and supple-

mentary fuel are thoroughly mixed before filling.

Outside ambi-

ent Temp up to

ºC

Percentage (%)

Winter

Grade

Diesel

Supplementary

Fuel

Upto -15ºC

100

-15 ºC to - 20

ºC

-20 ºC and

above

!! WARNING

Do not mix gasoline or alcohol with diesel. This mix-

ture can cause explosion.

3.2 GENERAL FITTING REMINDERS

3.2.1 WORKSHOP SAFETY

Refer the Section Precautions for Workshop Safety

related advises and directions.

3.2.2 PREPARATION

1. Clean components and surrounding area prior to

removal.

2. Plug off any openings exposed by component

removal using greaseproof paper and masking

tape.

3. Immediately block fuel, oil or hydraulic lines

when separated, using plastic caps or plugs, to

prevent loss of fluid and entry of dirt.

4. Close open ends of oil-ways, exposed by com-

ponent removal, with tapered hardwood plugs or

readily visible plastic plugs.

5. Once a component is removed, place it in a suit-

able container; use separate containers for each

component and its associated parts.

6. Before dismantling a component, clean it thor-

oughly.

7. Clean bench and keep labels, markers ready

before dismantling.

3.2.3 DISMANTLING

1. Observe cleanliness when dismantling compo-

nents, particularly when brake, fuel or hydraulic

system parts are being worked on. A particle of

dirt or a cloth fragment could cause a danger-

ous malfunction if trapped in these systems.

2. Blow out all tapped holes, crevices, oil-ways

and fluid passages with an air line. Ensure that

any “O-rings” used for sealing are correctly re-

placed or renewed, if disturbed.

3. Use marking ink to identify mating parts, to en-

sure correct reassembly. If a centre punch or

scriber is used, they may initiate cracks or dis-

tortion of components.

Wire together mating parts where necessary to

prevent accidental interchange

(e.g. roller bear-

ing components).

5. Wire labels on to all parts which are to be re-

newed, and to parts requiring further inspection

before being passed for reassembly; place

these parts in separate containers from those

containing parts for rebuild.

6. Do not discard a part due for renewal until it has

been compared with the new part, to ensure

that its correct replacement has been obtained.