HOIST 800D
11-6
Published 5-27-2018 Control # 039-06
Hoist Gearbox Oil
Hoist Gearbox Oil Change
Gearbox oil is drained by first removing the drain plug (33, 
Figure 11-2) by rotating the drum so that the plug is visible 
through the lower hole in the side plate (See view 1). Screw 
in a piece of 1 in pipe to allow the oil to drain, and then with a 
hex wrench remove the drain plug located inside of the 1 in 
pipe (See view 2). Examine the used oil for signs of 
significant metal deposits and then dispose of it in a proper 
manner. Remove the 1 in pipe.
Rotate the drum so that the port is visible through the upper 
hole in the side plate. Install a 1 in pipe with elbow into the 
upper hole in the side plate (See view 3). Fill the gearbox 
with 1.42 liters (1.50 quarts) of EP-90 oil. Remove the pipe 
and elbow, then replace the plug (33).
For information about changing hoist brake oil, see Drain /
Add New Hoist Brake Oil, page 11-5. See Recommended 
Oil, page 11-6 for recommended oil type and grade for your 
application.
RECOMMENDED OIL
NOTE: All oils must meet MIL-PRF2105E. Substitution
from a reputable manufacturer is allowed as long
as type and grade are maintained.
PLANETARY HOIST/SWING GEARING
PREVAILING AMBIENT TEMPERATURE
SAE 90W AGMA 4 EP
MOBIL SHC 75W90
SAE 20W20
MOBIL 1 SYNTHETIC ATF
MOBIL SHC 524
PLANETARY HOIST/SWING BRAKE
PREVAILING AMBIENT TEMPERATURE
FIGURE 11-3
9462
Fo
r 
Reference 
Only