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Mauldin 550-E - Hydraulic System

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Calder Brothers Corporation
Model: 550E Gravity Feed Paver
Page 16
550E Operations Manual Rev 1.0.doc
i.
Stop engine. Wait 15 minutes for engine oil to cool before proceeding.
ii.
Drain crankcase.
iii.
Unscrew and discard existing filters.
iv.
Fill new elements with fresh oil.
v.
Lightly coat the seal rings with oil, and then screw on filters until seals meet
flanges.
vi.
Tighten an additional 1/2 to 3/4 turn by hand.
IMPORTANT: Do not over tighten.
vii.
Fill crankcase to correct level.
viii.
Start engine and run at low idle. Have an assistant visually check seal areas
for leaks.
ix.
Stop engine. Wait a few minutes, and then check engine oil level once again.
Hydraulic System
1.
Hydraulic Fluid Change
a.
Stop engine. Allow system pressure to drop and remove filler cap.
b.
Remove suction hose and drain into appropriate container for disposal.
c.
Remove and clean hydraulic filter screen assembly.
d.
Remove hydraulic returns filter. Replace filter element and reinstall.
CAUTION: DO NOT OVER APPLY SILICON GASKET MATERIAL ALLOWING
SURPLUS TO ENTER HYDRAULIC SYSTEM.
e.
Replace fluid to approximately 1” from top of reservoir. Operate machine and
recheck level.
f.
Check visually for oil leaks.
NOTE: Each paver should be thoroughly inspected after each use and during maintenance
cycle for:
1.
Tightness of mounting bolts and attaching hardware on bearings, couplings, frame, etc.
2.
Leaks, cracks and loose electrical and fluid fittings.
3.
Malfunctioning indicators or controls.
4.
Worn or damaged tires, tracks or track pads.
5.
Cleanliness.

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