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MAINTENANCE
5540F/YB5515 OPERATOR’S MANUAL
6-24
Published 10-21-2011, Control # 055-03
6.
If necessary, add Mobil Fluid 424 to fill the hub to the
recommended level.
7.
Repeat Steps 1 through 4 for the other wheel hubs.
Check Hoist Gearbox and Brake Lubricant Levels
1.
Lower the boom to its lowest position.
2.
Engage the parking brake and shut off the engine.
3.
Clean around the gearbox fill/check plug (Figure 6-38)
and then remove the plug.
4.
Check the lubricant level, which should be to the bottom
of the fill/check hole.
5.
If necessary, add SAE 90 EP gear lube to gearbox until it
reaches the bottom of the fill/check plug hole.
6.
Clean around the area of the brake breather and check
plug (Figure 6-45). Remove the check plug.
7.
Check the lubricant level which should be level with the
bottom of the check plug hole.
8.
If necessary, add SAE 20-20W motor oil through
breather hole until oil is level with the bottom of the
check plug hole.
9.
Install the breather and check plug
1000 Hours of Operation (6 Months)
NOTE:
You must read and understand the warnings and
basic safety rules, found in Section 2 of this
manual, before performing any operation or
maintenance procedures.
For additional engine maintenance guidelines, see the
engine manual furnished with this crane.
Replace the Transmission Oil and Filter
1.
Engage the parking brake and shut off the engine.
Remove the ignition key.
NOTE:
It is necessary to climb under the crane to drain the
transmission oil. Be sure engine is shut off, the
ignition key is removed, parking brake is engaged
and chock blocks are in place before climbing
under the crane.
When the strainer is loosened/removed, oil will
gush out. Keep to one side when you remove the
strainer.
2.
Place a suitable container under the strainer
(Figure 6-36). Remove the strainer and gasket and drain
the oil into the container. Discard the gasket.
NOTE:
Before removing the strainer, be sure you have a
new strainer gasket. The old strainer gasket will be
damaged during removal of the strainer, and if it is
installed with the strainer, leakage will occur. It is
recommended that three gaskets be kept in supply
at all times. This will cover a years maintenance
and one for emergency maintenance.
3.
Place the container under the drain plug and remove the
drain plug (Figure 6-37). Drain any oil left in the
transmission into the container. Install the drain plug.
p0412
Brake Breather
FIGURE 6-37
p1250
Fill/Check Plug
Breather
Check Plug Location
FIGURE 6-38
WARNING
DO NOT
use EP type gear lubes in the brake section of
this hoist. EP lubes may prevent the clutch from locking
up, causing the load to fall and resulting in property
damage, personal injury or death.
Reference Only