PREVENTATIVE MAINTENANCE CD5515-2/YB5515-2 SERVICE MANUAL
5-22 Published 1-20-2017, Control# 483-02
Replace the Crankcase Oil and Filter
Change the engine oil more frequently if operating under
difficult conditions, for example in high or low temperatures,
dusty surroundings or frequent starting and stopping.
NOTE: If it is necessary to climb under the crane to change
the engine oil and replace the engine oil filter, be
sure engine is shut off, the ignition key is removed
and chock blocks are in place before climbing
under the crane.
Drain the engine oil only when it is hot and the
contaminants are in suspension.
Hot oils can cause personal injury.
1. Operate the engine until the water temperature reaches
60°C (140°F).
2. Shut off the engine
3. Place a suitable container under the engine drain plug.
Remove the oil drain plug.
4. Clean the area around the engine oil filter head.
5. Remove the filter and clean the gasket surface of the
filter head.
NOTE: The O-ring can stick on the filter head. Make sure it
is removed before installing the new filter.
6. Fill the new filter with clean recommended lubricating oil
(See engine operator’s manual furnished with the
crane).
7. Apply a small amount of clean engine oil to the gasket of
the new oil filter. Turn the filter clockwise to tighten it until
the gasket makes contact. Then, tighten the filter 1/2 to
3/4 turn to get correct seal.
8. Fill the engine crankcase with clean recommended
lubricating oil.
9. Operate the engine at idle and inspect for leaks at the
filter and drain plug
Torque Critical Bolts
NOTE: Maintain correct torque on all bolts. Failure to do so
may result in severe damage to the crane.
Hoist Gearbox Mounting Bolts
Torque the M16 mounting bolts (4) to 298-322 Nm (220-238
lb-ft). See Figure 5-29.
Swing Gearbox Mounting Bolts
Torque the 3/4” gearbox mounting bolts (4) to 289 Nm (213
lb-ft). See Figure 5-30. If the bolts are loose, check gear
backlash.
Mast Mounting Bolts
Because of the cyclic loading on the mast bolts, it is
important that these bolts be checked at regular intervals.
Make a record of any loose bolts. If any bolt does not hold to
correct torque after the second check, remove and replace
the bolt. A loose bolt indicates possible failure of the bolt.
The correct torque on each outside unplated bolt (mast to
swing bearing) should be 698-756 Nm (515-558 lb-ft). The
correct torque on each inside unplated bolt (swing bearing to
frame) should be 698-756 Nm (515-558 lb-ft).
Use the torque sequence shown in Figure 11-20 when
checking the torque on the bolts.
NOTE: Use only special Class 12.9 unplated bolts for
replacement of the mast bolts. Order the bolts from
your distributor, see your parts manual.
p1644
Hoist Gearbox Mounting Bolts - 4
FIGURE 5-29
Swing Gearbox Mounting Bolts
FIGURE 5-30
a0097
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