PS Magazine - MAY 1984
PS, The Preventative Maintenance Monthly
ISSUE 378
MAY 1984
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JD410 Loader-BAckhoe .±
ReducE PresSu±²³ Th´ µ
You've got to get rid of the pressure in the hydraulic lines of ±our JD410 loader-
backhoe befOre switching the drill, shovel, or impactor. Then, the quick discon²
nect couplings Will hook (or unhooK) With only a small bit of hot fluid leakage.
And that sure beats getting a shot of hot oil all over ±ourself.
52
v
WORK tHE Hy²R³ul´C COntROl
v³lvE H³n²lEs fOR tHE buCKEtµ
b³CKHOE¶ ³n² OuTR´ggERs·
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Cutting
the
engine sHuts oF the
h±draulic pump. The h±draulic ³uid
drains back into its reservoir. Results?
No pressure and little leakage ´rom the
couplings.
Iµ this doesn't work .
..
if ±ou still
"¶el· pressure .
.. Work the controls
again. Still no go? Get ±our mec¸ to
Have a look.
MAY B
JD4¸0 Loader¹Backhoe º»¼
to¶qU· ¸¹aº BOl» ¼igH½¾¿
¹uring a loºg road haul, the re»¼
whee½
wheel bolts have a nas½± habit of com¾
16¾9 x 24 ¿NcheS
¿ng loose. Àhen the riM works ´reeÁ Á Á
PÀ ÁÂ 57181
bolt
threads
ge scuÃed
up .
.. rim
_²²²²² .
Mounting holes wallow out .
.. and there
goes a rear wheel.
Tighten the bolts 425 lb¾ft, like SecÄ
tion 10 General, Page 25Å11 of TÆ 5¾
2420¾222¾14&P¾2 sa±s. But fÇrst, clean
oÈ aºy rust, dirt or paint around the
bolt hole area.
Ãap ScÄeÅÆ
%
x2V ¿ÇcÈeS
PÀ ¸9É 2431
Retorque the bolts after the Éirst Êa±
of operatioº and every 200 hours of
operation to make sure thEy s˱ tight.
If the bolts come loose and ruin the
bolts and riÌ, here' re the reÍlacements:
The ÎSCÆ Ïr all is 75Ð60. Ñrder
them on a DD Îorm 1348¾6. Use RIÒ
S9C.
ÀeAD ÁfF ÂÃ ÄÅeEzÆ
The bucket level indicator can Óeeze
up on your JD410 .
..
liÔe when ±ou
haven't used the tractor fOr a while.
Lube the rod and guide if ±ou 're not
going to be using tHe loader regularl±.
Õngine oil will do just fine.
During operation, tho, dust, grit or
sand Will mix with the lube and cause
another kind of ÉreezeÖup.
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1±!
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