(Supersedes LO 9-2350-247-12, March 1982)
8 JULY 1994
c. Fill transmission with new grade oil.
8. TRANSMISSION OIL DRAIN (M548A3).
d. Operate transmission in 1-4 range with engine
idling for 5-6 minutes.
Drain transmission oil when hot after operation.
Allow oil to drain thoroughly for one hour if time
e. Drain oil and change transmission oil filter.
f. Fill transmission with new grade oil.
a. Remove lower hull access cover
g. Check oil level.
b. Remove transmission oil drain hose from
bracket (see card no. 7).
Dry cleaning solvent PD-680 is toxic and flam-
mable. Death or injury may result. Always use in an
Place end of hose in suitable container and
open area with good air flow, away from sparks,
remove plug from hose.
heat, or flames. Wear protective goggles and gloves.
Do not breathe vapors. Avoid contact with skin,
d. If you detect anything out of the ordinary,
eyes, and clothes. If you get dizzy while using
notify direct support maintenance.
solvent, breathe fresh air and get medical help. If
solvent gets on hands, wash them. If solvent gets
e. Clean and install drain plug in oil drain hose.
in eyes, flush eyes with fresh water and get medical
Secure hose in bracket.
help immediately. Keep fire extinguisher nearby.
f. Fill transmission with approximately 36 quarts
10. TRANSMISSION BREATHER (M548A3). Semi-
(refill capacity) or 48 quarts (initial fill) of oil to
annually or every 1,500 miles, remove and clean
bring level between F and L marks on gauge
transmission breather with dry cleaning solvent (PD-
680, Type Ill). Dry breather and install on transmission
9. TRANSMISSION OIL FLUSH PROCEDURE
(M548A3). Use the following procedure when chang-
11. PRESERVATION OIL. If transmission has been
ing oil grade or when oil is contaminated.
filled with preservation oil (MIL-L-21260) by the manu-
facturer or at time of overhaul, leave this oil in transmis-
sion until first scheduled oil change. Maintain operating
Transmission oil must be flushed when changing
oil level by adding same grade of PE oil. When first
scheduled oil change is made, refill transmission with
applicable grade oil (OE/HDO or OEA). See note 3
a. Operate carrier until coolant reaches normal
(card no. 8) and note 8 above.
12. REFILL CAPAClTY (M548A3). After a fluid change,
the transmission refill capacity is approximately 9
Do not change transmission oil filter at this
gallons or 36 quarts. In the event of a major disassem-
bly or rework of the transmission, the initial fill is
approximately 14.25 gallons or 57 quarts.
b. Drain transmission oil.
Card 9 of 40