flow may also drain onto the clutch or clutch
brake, causing additional problems.
IMPORTANT: Do not mix types of oil, because
of possible incompatibility. Do not use oil addi-
tives, friction modifiers, or synthetic lubricants.
NOTE: The correct oil level is established by the
fill plug opening.
2.
Clean the fill plug, then install it. Tighten the plug
as follows:
20 to 25 lbf·ft (27 to 34 N·m) for a 3/4-inch plug;
60 to 75 lbf·ft (81 to 102 N·m) for a 1-1/4 inch
plug.
Lubricant Capacities, Eaton/Fuller Transmissions
Model
Refill Capacity
*
:
Quarts (liters)
FS–4205A/B
6.25 (6.0)
FS–5205A/B
5.25 (5.0)
FS–6305A/B
9.5 (9.0)
FS–5306A
9.0 (8.5)
FS–6306A
9.0 (8.5)
*
Quantities listed are approximate. With the vehicle in normal operating
position, fill the transmission until the lubricant is level with the bottom of the
fill hole.
Table 2, Lubricant Capacities, Eaton/Fuller
Transmissions
26–03 Transmission Breather
Checking
Transmission housing breathers must remain unob-
structed. A plugged breather could result in pressure
build-up, which could cause oil leakage.
If the breather is plugged, clean or replace it. See
. Check more often if the vehicle is operating
under very dusty conditions.
26–04 Allison Transmission
Fluid and Filter
Changing
IMPORTANT: Extended oil and filter change in-
tervals (as announced by Allison beginning in
2002) do not apply to Allison transmissions in
Freightliner-chassis vehicles. Allison transmis-
sions are received partially filled with TranSynd
synthetic automatic transmission fluid (ATF).
They are then topped-off with a non-TranSynd
ATF. For this reason, Allison’s recommended
extended oil and filter change intervals for
TranSynd-only or for a "mixture" of TranSynd
and non-TranSynd do not apply. To qualify for
the "mixture" intervals, the transmission must be
drained as in a standard fluid change and then
filled with TranSynd. See the
Allison Owner’s or
Operator’s Manual for more information.
AT/MT Series
1.
Park the vehicle on a level surface and apply the
parking brakes.
2.
Run the engine until the transmission fluid
reaches the operating temperature of 160 to
200°F (71 to 93°C). Shift the transmission to
Neutral (N) and shut down the engine.
CAUTION
To prevent dirt from entering the transmission,
use only clean containers and fillers for the trans-
mission fluid. Do not use fillers or containers that
have been used for water or antifreeze. Dirt, water,
or antifreeze could damage the transmission.
f260007a
05/27/93
Fig. 2, Transmission Breather (typical)
Transmission
26
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