TM 9-2320-279-10-1
Table 2-2. Preventive Maintenance Checks and Services for Models M977 and M985
I
Location
tem Interval
Crewmember
No.
Item to
Not Fully Mission
Check/
Procedure
Capable If:
Service
8 1 A f t e r
DRIVER
Material
h. Boom Control Lever.
h. Boom does not
Handling
Move BOOM control lever to
raise to 45° above
Crane
UP position until the boom is
horizontal position.
approximately 45° above
Continued
horizontal.
i. Mast and Boom Control
Levers. Move MAST control
lever to UP position until the
mast is fully erect and the cyl-
inders are fully extended.
Use BOOM control lever UP
simultaneously as required to
maintain the boom at approx-
imately 45° above horizontal
until the mast is fully erect.
Hold the mast control lever to
up position for 2-3 seconds
after mast is fully erect to en-
sure cylinders are fully filled
with oil.
i. Mast cylinders do
not raise completely
before stopping.
2-88
Change 5
