Replace The Winch Gearbox And Brake Lubricant; Replace The Hydraulic Oil - Manitowoc Grove 5540F Service Manual

PREVENTATIVE MAINTENANCE

Replace the Winch Gearbox and Brake Lubricant

Winch Gearbox
1. Lower the boom to lowest position, engage the parking
brake. Leave the engine running.
2. Rotate the drum until the drain plug is visible in the hole
in the side of the mounting bracket.
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Fill/Check Plug
Install 1" Pipe Nipple Here
Plug Locations
3. Clean around the gearbox breather and the fill/check
plug hole. Remove the gearbox breather (Figure 5-49)
and clean it in a suitable solvent. After it is cleaned,
install the breather.
4. Clean around the fill/check plug (Figure 5-49) and
remove the plug.
5. Place a suitable container under the drain plug.
6. Screw a 1 inch pipe nipple into the hole in the mounting
bracket (Figure 5-49). Using a ratchet wrench with an
extension and a 3/8" hex wrench attached, remove the
drain plug through the pipe nipple. Allow the fluid to drain
into the container. Examine the oil for signs of significant
metal particles. If any particles are found, the gearbox
may require disassembly and repair.
7. Install the drain plug and remove the nipple.
8. Fill the gearbox through the fill hole until the fluid is even
with the bottom of the fill hole. Fill with SAE 90 EP gear
lube.
9. Install the fill/check plug.

Replace the Hydraulic Oil

NOTE: ISO (International Standards Organization) #46/68
Hydraulic Oil (Mobil Fluid #424) is recommend for
year-round use in the hydraulic system.
5-26
Breather
Drain Plug
FIGURE 5-49
Published 10-21-2010, Control# 198-04
5540F/YB5515 SERVICE MANUAL
In very cold temperatures, SAE 5W or SAE 5W-20
oils can be used if the viscosity of the oil will not be
less than 60 SUS (Saybolt Universal Seconds) at
maximum operating temperature. It may be
necessary to use a pre-heater and a longer than
normal warming period at low operating speed to
heat the oil to operating temperature.
To change the hydraulic oil:
1. Fully retract and lower the booms.
2. Retract all outriggers.
3. Operate the hydraulic system until the hydraulic oil is
warm.
NOTE: It is necessary to climb under the crane to drain the
hydraulic oil. Be sure engine is shut off, the ignition
key is removed and chock blocks are in place
before climbing under the crane.
4. Level the crane, engage the parking brake, shut off the
engine and remove the ignition key.
5. Place a suitable container under the hydraulic tank drain
ports (Figure 5-50).
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Hydraulic Tank Drain Ports
p0426
Tank Hoses and Suction Strainer
FIGURE 5-50
FIGURE 5-51