CHANGE HYDRAULIC RETURN
FILTER ELEMENT
This element is a cartridge type accessible from a hous-
ing on top of the hydraulic reservoir. Initial replace-
ment is after the first 100 hours. See illustration.
Remove the top cover of the housing. Remove the ele-
ment and discard. Insert the new element onto the
housing and replace the cover.
CHANGE AXLE DIFFERENTIAL
AND PLANETARY OIL
Differential
1. Remove the three drain plugs and drain out the old
oil. Replace the drain plugs (see illustration).
IMPORTANT:
DO NOT discharge oil onto
ground. Catch and dispose of per local waste dis-
posal regulations.
2. Remove the check and fill plugs. Fill the differen-
tial with oil as specified in the LUBRICATION chap-
ter. When the oil flows from the check hole, replace the
plug. Wait 10 to 15 minutes and repeat this process
until the axle is full Repeat the procedure with the
other axle.
Axle Planetary Hubs
The hubs have one plug each used for draining and fill-
ing
(see illustration)
.
1. Position the wheel until the arrow points to the left.
Remove the drain/fill plug and allow the oil to drain
out. Replace the plug.
IMPORTANT:
DO NOT discharge oil onto
ground. Catch and dispose of per local waste dis-
posal regulations.
2. Re-position the hub so the arrow points down. Fill
with fresh oil as specified in the LUBRICATION chap-
ter. When the oil runs out, install the drain/fill plug.
Repeat this procedure on the three remaining hubs.
CHECK EXHAUST SYSTEM
Examine the muffler and tail pipe for possible holes.
Re-tighten any loose clamps and make sure the mani-
fold outlet gasket is not leaking.
908424/AP500
52
PRINTED IN U.S.A.
PLUG IN DRAIN
POSITION.
Axle Oil Plugs Location
FILL
CHECK
DRAIN
NOTE:
These fill/check plugs are located on the opposite
side of the differential.
FRONT AXLE SHOWN
Reservoir Filter Removal
Housing Top
Filter Element
Filter Housing
TOP OF
RESERVOIR
WARNING
When servicing the hydraulic system, lower
the boom to the ground.
Summary of Contents for Dynalift 552
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