Duff-Norton RAM-PAC - Maintenance Hints

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8

pump

are

elevated

above

the

ram

ports

(the

pump

reservoir

to

be

elevated

above

all

components).

When

connecting

large

rams

and/or

long

hoses

the

reservoir

may

suffer

considerable

oil

depletion.

Therefore,

the

oil

level

in

the

pump

reservoir

should

be

rechecked.

Add

oil

if

necessary.

9

RAM

-PAC

unit

is

now

ready

for

operation.

10

Always

use

a

ram

whose

capacity

is

equal

to

or

greater

than

the

maximum

load

that

may

be

imposed

on

it.

If

there

is

any

doubt

as

to

the

magnitude

of

the

load,

it

is

suggested

that

a

Hydraulic

Gage

be

used

to

determine

its

actual

value.

11

Always

Wace

ram

on

a

firm,

solid

foundation

so

that

entire

area

of

its

base

is

supported.

I

1

MAINTENANCE HINTS

The

oil

level

in

the

pumps

should

be

checked

periodically.

The

RAM

-PAC

hand

pumps

are

shipped

with

their

full

oil

capacity.

However,

through

normal

operation,

there

is

a

certain

amount

of

oil

loss

which

should

be

replaced.

If

the

inspection

shows

that

the

oil

level

is

low,

it

should

be

replaced.

This

can

be

done

in

the

following

manner

for

the

HP

-150

Hydraulic

Pumps.

RESERVOiR

PLUG

4'11

c0

0

a

4

12

13

A.

B.

C.

Avoid

corner

and

off

-center

loading.

This

type

of

loading

imposes

eccentric

loads

on

the

ram

which

may

develop

heavy

side

loads

on

the

cylinder

walls

and

thus

cause

scoring

and

will

greatly

reduce

the

life

of

the

packing

and

the

cylinder.

Avoid

sharp

bends

in

the

hose

because

they

may

cause

premature

failure

of

the

hydraulic

hose.

For

persistant

leaks,

use

teflon

tape.

Be

careful

so

that

loose

tape

does

not

get

into

oil

passageway

because

it

may

prevent

ball

checks

from

properly

seating

and

sealing;

it

may

clog

filters

and

small

orifices.

The

reservoir

plug

is

located

at

the

rear

end

of

the

pump.

Turn

the

pump

so

that

the

reservoir

plug

is

up

and

remove

the

plug

from

the

end

cap.

Check

oil

level

with

the

dip

-stick

attached

to

the

end

of

the

reservoir

plug

as

you

would

in

your

automobile.

If

pump

is

not

fi

lled

to

capacity,

oil

will

not

show

on

the

dip

-stick.

Add

oil,

if

necessary,

until

it

shows

on

the

knurled

portion

of

the

dip

-stick

and

then

re-

place

the

plug.

Do

Not

allow

oil

level

to

go

above

knurl

on

the

dip

-stick.

If

the

reservoir

is

overfilled,

it

will

reduce

the

efficiency

of

the

pump.

D.

Use

only

DUFF

-

NORTON

HYDRAULIC

JACK

OIL

for

the

RAM

-PAC

units.

CAUTION:

Do

not

check

oil

level

or

add

oil

to

pump

while

the

ram

is

extended.

Always

see

that

the

ram

is

fully

re-

tracted

before

checking

the

oil

level.

Remember

that

cleanliness

of

the

oil,

and

of

the

interior

of

the

pump

and

the

ram,

is

the

key

to

trou,le-free

operation.

Do

not

permit

sludge,

dirt,

scale

or

other

contaminants

to

accumulate

in

the

reservoir.

7

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