ATD Tools 7434A Owner'S Manual Download Page 4

4

MAINTENANCE

Important:

 Use 

RQO\

 

JRRG

 

JUDGH

 

K\GUDXOLF

 

MDFN

 oil. Avoid

mi

[LQJ

 

GLIIHUHQWW\SHVRIIOXLGDQG1(9(5XVHEUDNHIOXLG

tu

UE

ine oil, transmi

VVLRQIOXLGPRWRURLORUJO\FHULQ,PSURSHU

fluid can cause premature failure of the 

M

ac

N

 and the potential

for sudden and immediate loss of load. 

:H

 recommend

0RE

il 

'7(

 13M or 

HTXL

valent.

3HULRGLFDOO\

 

FKHFN

 for 

OHDNV

 at air connect

LRQV5HSODFH

connections as needed.

Adding oil:

1.

:LWK

 saddle 

IXOO\

 lowered, set 

MDFN

 in its 

XSULJKW

 level

position. 

5HPRYH

 oil filler screw.

)LOOXQWLORLOLVOHYHOZLWKWKHILOOHUKROHVFUHZUHLQVWDOO

     oil filler screw.

Changing oil:

For  

EHV

t performance and 

ORQJHV

t life, replace the  complete

IOXLGVXSSO\DWOHDVW

 once per 

\HD

r.

1.

:LWK

 saddle 

IXOO\

 lowered, set 

MDFN

 in its 

XSULJKW

 level

position. 

5

emove the oil filler screw.

 

/D\

 the 

MDFN

 on its side and drain the

fluid into a suitable

container.

Note: 

Dispose of 

K\GUDXOLFIOXLG

  in accordance with local

re

JX

lations.

6HWMDFNLQLWVOHYHOXSULJKWSRVLWLRQDQGILOOZLWKRLOXQWLO
MXVWEHORZWKHULPRIWKHILOOHUKROH

4. 

5HLQV

tall the oil filler screw.

Lubrication:

1.  A  periodic 

FRDWLQJ

 of 

OLJKW

 

OXEULFDWLQJ

 oil to pivot points,

a

[

les and hin

JHV

 will help to prevent rust and assure

that wheels, casters and pump 

DVVHPEOLH

s move freel

\

.

 

:

hen used on a dail

\

 

EDVLV

 

WHK$7'$

should 

EH

internall

\

 lu

E

ricated 

EHIRUH

 each use. Use o

QO\JR

od 

TXDOL

t

\

 air tool 

OXEULFD

nt. If no inline oiler is used, pour a

teaspoon of air tool oil into the inlet of the air 

VXSSO\

inlet. 

6LPSO\

 operate the 

MDFN

 

XVLQJ

 the air feature in

order to 

IXOO\

 

GLVWULEXWH

 the oil.

Cleaning:

3HULR

dicall

\

chec

N

 the ram 

IRUVLJQV

 of rust or corrosion. 

Clean as needed and wipe with an oil

\

 cloth.

Note: 

Never use sandpaper or 

DEU

asive material on

Purging air from the hydraulic system:

$LUFDQDFFXPXODWHZLWKLQDK\GUDXOLFV\VWHPGXULQJ
VKLSPHQWRUDIWHUSURORQJHGXVH7KLVHQWUDSSHGDLUFDXVHV
WKHMDFNWRUHVSRQGVORZO\RUIHHOVSRQJ\8VHWKHVWHSV
EHORZWREOHHGWKHV\VWHP

3XPSWKHMDFNWRWKHKLJKHVWSRLQWZKHUHWKHILUVWDQGWKH
VHFRQGSLVWRQUDPVDUHERWKDWPD[LPXPKHLJKW
*HWWKHKHOSRIDQRWKHUSHUVRQWRNHHSWKHUHOHDVHSHGDO
GHSUHVVHGDQGDFWLYDWHWKHIRRWSHGDODERXWWLPHV
/HWJRRIWKHUHOHDVHSHGDOWKHDLULQWKHRLOV\VWHPVKRXOG
EHEOHGVXFFHVVIXOO\

To bleed the air in the second cylinder:

/RFDWHWKHDLUEOHHGHUVFUHZDWWKHWRSQXWZKLFKLVRQWKH

    top of the first piston rod.

3XPSWKHMDFNWRLWVPD[LPXPKHLJKW8VHDQDOOHQVRFNHW
ZUHQFKWRORRVHQWKHDLUEOHHGHUVFUHZIRUQRPRUHWKDQ
WZRƒWXUQV3XVKWKHVDGGOHDVVHPEO\GRZQZDUGWR
IRUFHWKHDLULQWKHF\OLQGHURXWXQWLOQRWKLQJEXWRLOGUDLQV
RXWRIWKHEOHHGHUKROH
7LJKWHQWKHEOHHGHUVFUHZDQGGRXEOHFKHFN,WPD\EH
QHFHVVDU\WRUHSHDWWKHDERYHVWHSVVHYHUDOWLPHV

Storage:

:K

en not in use, store the 

MDFN

 with saddle in lowest

position and air 

VXSSO\

 disconnected.

TROUBLESHOOTING

Possible Causes

Corrective Action

 

-DFN

 will not lift load

Jack bleeds 

 after lift

-DFN

 will not lower after unload

in

J

 

3R

or lift performance

 

:LOO

 not lift to full 

H[WHQVLRQ

 Air 

VXSSO\

 

LQDGHTXDWH

 

+\GUDXOLF

 unit malfunction

 Overload condition
 

+\GUDXO

ic unit malfunction

 

5HVHU

voir overfilled

 

/

in

N

a

JH

 

E

indin

J

 Fluid level low

 Fluid level low

 

(Q

sure ad

HT

uate air suppl

\

 

 Contact  Tech. 

6HUYLFH

 

5

eme

G\

 overload condition

 Contact  Tech. 

6HUYLFH

 Drain fluid to proper level
 Clean and lu

E

ricate movin

J

 parts

 

(QVXUH

 proper fluid level

 

(QVXUH

 proper  fluid level

Symptom

these surfaces

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