TM 5-3805-280-24-1
CAUTION: DO NOT heat oil over 182C (260F).
Oil fumes or oil can ignite above 193C (380F).
Use a thermometer. DO NOT allow a flame or
heating element to come in direct contact with
the oil. Heat the oil in a well ventilated area.
02
0250
Plan a safe handling procedure to avoid burns.
23
10. Heat inner roller bearing (F) cone to 50--70C (122--
158F). Install cone tight against shoulder.
Roller Bearing Cone--Specification
Temperature ......................................................... 50--70C (122--158F)
IMPORTANT: O-ring and seat surfaces for O-ring
must be clean, dry, and oil free so
O-ring does not slip.
11. Thoroughly clean O-ring and seat surfaces in
housing, drum, and seal ring using volatile,
non-petroleum base solvent and lint-free tissues.
12. Install O-ring on seal ring.
NOTE: A volatile, non-petroleum base solvent or talcum
powder can be used as a lubricant. Solvent must
A--Ring Gear, Drum, and Sprocket
not damage the O-ring or leave an oil residue.
B--Outer Roller Bearing
C--Propel Motor
13. Apply equal pressure with fingers at four equally
D--O-Ring (2 used)
spaced points on seal face. Seal must "pop" down
E--Seal Ring (2 used)
into place so O-ring is tight against seal bore and seal
F--Inner Roller Bearing
ring is installed squarely.
14. Wipe finger prints and foreign material off seal ring
face using clean oil and lint-free tissues.
15. Apply a thin film of clean oil on each seal ring face.
16. Install ring gear, drum, and sprocket (A) on propel
motor (C) housing.
17. Heat outer roller bearing (B) cone to 50--70C (122--
158F). Install bearing cone.
Roller Bearing Cone--Specification
Temperature ......................................................... 50--70C (122--158F)
Continued on next page
TX,02,UU3676
1906MAY984/11
12-21