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MAINTENANCE
SECTION 8
Page
23
HYDRAULIC SYSTEM
DRAINING THE SYSTEM
1.
Operate the boom, bucket and steering until the hydraulic
oil becomeswarm.
2.
Raise the bucket completely and roll the bucket back all
the way.
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CAUTION: DO NOT ALLOW ANYONE UN-
DER THE BOOM AND BUCKET WHI LE
IN THE RAISED POSITION.
6.
Remove the plug
(2,
Illust. 31) from the bottom of the
reservoir drain.
3.
Park the machine on level ground, shut the engine down,
and apply the parking brake.
4.
Clean the top of the reservoir with kerosene or cleaning
solvent.
lIIust.30
Reservoir Filler Capand Relief Valves
5. Slowly loosen and remove the reservoir filler cap (1,
IIlust. 30).
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CAUTION: ALWAYS LOOSEN THE FI LLER
CAP SLOWLY TO GRADUALLY RELEASE
ANY PRESSUREBUILD-UP IN THE RESER-
VOIR.
lIIust. 31
ReservoirDrain Valve and Plug.
7. Fit a hose to the spout of a largefunnel. Put the other end
of the hose into a container large enough to hold all of the
fluid from the reservoir.
8. Place the funnel under the reservoir drain and open the
drain valve' (1, IIlust. 31).
9. Lower the booms slowly. After the booms come to rest on
the ground, push the bucket lever forward and let the bucket
down slowly. This will force the hydraulic oil out of the boom
and bucket cylinders and into the reservoir.
10. Let the upper portion of the reservoirdrain completely.
Close the drain valve and install the plug in the drain hole.
11. Remove the drain plug from the bottom of the reservoir
and let the lower portion of the reservoirdrain.
12. Install the drain plug back in place.
13. Put the reservoir filler cap back in place until the system
is to be refilled this will keep contamination from
getting
into the reservoir.
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