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26
8. Install a new square-cut seal on each cover as-
sembly, and install the fluid filter elements on the
cover assemblies.
9. Install the filter and cover assemblies into the
filter compartment.
10. Align each cover assembly with the holes in the
channel plate sump, and push the cover assem-
blies in by hand to seat the seals.
CAUTION
Do not use the bolts to draw the filter covers to
the sump. This can damage the covers, seals, or
sump.
11. Install six bolts in each cover, and torque the
bolts 38 to 44 lbf·ft (51 to 61 N·m).
12. Replace the drain plug O-ring, and install the
drain plug. Tighten the drain plug 18 to 24 lbf·ft
(25 to 32 N·m).
13. Refill the transmission with fresh automatic trans-
mission fluid and check the fluid level. See
Table 4
for transmission lubricant capacities, and
Table 5
for approved transmission lubricants.
Allison Transmission Lubricant Capacities
Transmission Model
HD4060/4560 (standard sump)
HD4060/4560 (shallow sump)
*
Quantities listed are approximate. Add listed amount of fluid, then perform
a "hot check" and add fluid as needed. Do not overfill.
†
Add 3 quarts (3 liters) if equipped with a PTO.
Table 4, Allison Transmission Lubricant Capacities
Approved Automatic Transmission Lubricants
Lubricant Type
*
All Allison Models
Castrol TranSynd (synthetic)
®
Dexron
III
*
Lubricants listed in order of preference. Do not mix fluid types.
Table 5, Approved Automatic Transmission
Lubricants
26/4
*
Refill Capacity
: qt (L)
†
36 (34)
†
26 (25)
Temperature: °F (°C)
Above –22 (–30)
Above –17 (–27)
26–03 Manual Transmission Air
Filter/Regulator Check,
Cleaning, or
Replacement
Eaton Fuller
1. Apply the parking brakes and chock the rear
tires. Drain the air reservoirs.
WARNING
Drain the air supply; if the air supply is not
drained before the air filter/regulator is serviced,
serious injury and component damage could re-
sult.
2. Clean the outside of the air filter/regulator with
cleaning solvent. See
05/27/93
Fig. 3, Air Filter/Regulator (Eaton Fuller transmission
3. Remove the end cap, large O-ring, and filter ele-
ment from the filter housing. See
the small O-ring from the end cap.
Century Class Trucks Maintenance Manual, April 2005
Transmission
Fig.
3.
f260037a
shown)
Fig.
4. Remove
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