freightliner M2 Plus Maintenance Manual page 57

Transmission
3. If needed, fill the transmission with oil until level
with the lower edge of the fill opening. For
approved lubricants, see
transmissions) or Table 2
transmissions). For more information and a
complete listing of approved lubricants, refer to
the Eaton website, www.roadranger.com.
Eaton Approved Manual Transmission Lubricants
Lubricant Type *
Synthetic transmission
lubricant meeting Eaton PS-
386 lubricant specification
Heavy-duty engine oil
meeting MIL-L-2104D or
Caterpillar TO-4 Specification
*
Lubricants listed in order of preference. Do not mix types of oil.
Table 1, Eaton Approved Manual Transmission
Lubricants
Eaton Approved Automated Transmission Lubricants
*
Lubricant Type
Synthetic transmission
lubricant meeting Eaton PS-
386 lubricant specification
*
Do not mix types of oil.
Table 2, Eaton Approved Automated Transmission
Lubricants
IMPORTANT: If switching from a petroleum-
based lubricant to a synthetic, all areas of each
affected component must be thoroughly drained.
Switching to a synthetic lubricant, when a
petroleum-based lubricant has been used for
50,000 miles (80 000 km) or longer may affect
transmission performance. Monitor all seal
areas for the first 10,000 miles (16 000 km)
after changing to a synthetic from a petroleum-
based lubricant.
4. Clean the fill plug, then install it in the
transmission. Tighten the plug as follows:
• 25 to 35 lbf·ft (34 to 48 N·m) for Eaton
Fuller transmissions with 3/4-inch pipe
threads.
Business Class M2 Plus Maintenance Manual, 02/10/2023
Table 1 (manual
(automated
Temperature: SAE
°F (°C) Viscosity
All —
Above 10 (–12) 40 or 50
Below 10 (–12) 30
Temperature: SAE
°F (°C) Viscosity
All —
• 60 to 75 lbf·ft (81 to 102 N·m) for Eaton
Fuller transmissions with 1-1/4-inch pipe
threads.
Allison
Cold Check
Clean all dirt away from around the end of the fluid
fill tube before removing the dipstick.
NOTICE
Do not allow foreign matter to enter the
transmission. Dirt or foreign matter in the
hydraulic system may cause undue wear of
transmission parts, make valves stick, and clog
passages.
It is important to check the fluid level cold to
determine if the transmission has a sufficient amount
of fluid to be safely operated until a hot check can be
performed.
1. Park the vehicle on a flat, level surface.
2. Apply the parking brakes and chock the rear
tires.
3. Run the engine for at least one minute.
4. Shift from DRIVE to NEUTRAL, and then shift to
REVERSE to fill the hydraulic system.
5. Shift to NEUTRAL and allow the engine to idle at
500 to 800 rpm.
6. With the engine running at idle, remove the
dipstick from the tube and wipe it clean.
7. Insert the dipstick into the tube, then remove the
dipstick.
8. Check the fluid level reading and repeat the
check procedure to verify the reading.
If the fluid level is within the COLD RUN band,
the transmission may be operated until the fluid
is hot enough to perform a HOT RUN check.
If the fluid level is not within the COLD RUN
band, add or drain fluid as needed to adjust the
fluid level to the middle of the COLD RUN band.
See Fig. 4. For approved Allison transmission
lubricants, see Table
26
3.
26/3