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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
& PLANETARY OIL
Differential
1. Remove the drain plug 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/fill plug. Fill the differential
with oil as specified in the LUBRICATION chapter.
When the oil overflows 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.
NOTE:
Perform all other service requirements
up to this point, as well as the following.
CHECK HYDRAULIC SYSTEM
RELIEF PRESSURES
Pressure settings for relief valves are pre-set at the fac-
tory. Two test ports are provided on the dash front.
Before conducting any test port pressure checks, check
the engine RPM. Engine speed must be 950 to 1000
RPM at idle and 2700 to 2750 RPM at high idle.
Steering Relief Pressure
Plug a 3000 PSI (206 bar) oil or liquid filled gauge in
the test port. Cramp the steering full to the right or left.
The gauge should read 2000 PSI (138 bar).
Check Main Relief Pressure
With the gauge in the test port and the boom extended,
retract the boom fully. The gauge should read 2850 PSI
(196 bar).
CHANGE HYDRAULIC RESERVOIR
OIL & STRAINER
Clean all dirt and debris from around the top of the
reservoir, especially around the access cover. Refer to
illustration on next page and use the following proce-
dure:
1. Remove the drain plug and drain out all used oil.
Wash or blow off all collected particles from the mag-
netic drain plug.
IMPORTANT:
DO NOT discharge oil onto
ground. Catch and dispose of per local waste dis-
posal regulations.
Service Every 2000 Hours
Axle Oil Plug Locations
PLANETARY
Horizontal
Drain
DIFFERENTIAL
Fill
Drain
Side Opposite
Drive Shaft
Mount
907879/AP1198
48
PRINTED IN U.S.A.
Summary of Contents for Dynalift 663
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Page 17: ...PRINTED IN U S A 15 907879 AP1198 41 34 29 7 29 34 41 SAFETY 7 Courtesy of CraneMarket com...
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Page 63: ...Notes PRINTED IN U S A 61 907879 AP1198 Courtesy of CraneMarket com...
Page 66: ...663 Hydraulic Schematic 907879 AP1198 64 PRINTED IN U S A A Courtesy of CraneMarket com...
Page 67: ...663 Hydraulic Schematic PRINTED IN U S A 65 907879 AP1198 A Courtesy of CraneMarket com...
Page 70: ...Load Zone Charts 663 Winch Boom 907879 AP1198 68 PRINTED IN U S A Courtesy of CraneMarket com...