Iveco Stralis AT/AD. Manual — part 112
Clean or replace breather.
YES
Breather clogged.
Fluid level low.
Top up to correct level.
NO
Replace filter cartridge.
Air entering system through fluid intake filter cartridge.
INTERMITTENT NOISE
(BUZZING)
NO
Replace fluid filters.
Fluid filters clogged.
NO
Adjust fluid level.
YES
Air in fluid causes noisy operation of pump.
NO
See point 8.
YES
Line pressure low.
12
YES
YES
YES
186
GEARBOXES ALLISON MD 3060 PR ALLISON MD 3066 PR
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TRALIS
AT/AD
Base - January 2003
OIL LEAKAGE FROM
OUTPUT SHAFT
Seal in output flange faulty or missing.
Fit a new seal.
13
YES
YES
YES
YES
Bolts of output flange loose.
Tighten output flange bolts.
NO
O-ring of flange retaining plate damaged or missing.
Replace flange retaining plate O-ring.
DIRTY OIL
Fluid and filters require changing.
Change fluid and filters.
YES
NO
See point 10.
YES
Overheating.
NO
Replace filter/seals.
YES
Fluid filters/seals damaged.
NO
Inferior quality fluid.
Use recommended fluid.
14
NO
GEARBOXES ALLISON MD 3060 PR ALLISON 3066 MD PR
187
S
TRALIS
AT/AD
188
GEARBOXES ALLISON MD 3060 PR ALLISON MD 3066 PR
S
TRALIS
AT/AD
Base - January 2003
PART
TORQUE
Nm
(kgm)
Screws securing converter box to engine
49 to 58
(4.9 to 5.8)
Screws securing adapter - flexible plate
34
(3.4)
Hose fittings for gearbox-exchanger connection
54 to 68
(5.4 to 6.8)
Connection ring nut of external wiring to electric gearbox connector
2 to 3
(0.2 to 0.3)
Screws securing control module to gearbox
57 to 68
(5.7 to 6.8)
Oil filter covers screws
51 to 61
(5.1 to 6.1)
Oil drain plug
25 to 32
(2.5 to 3.2)
Turbine speed sensor securing screw
12 to 14
(1.2 to 1.4)
Engine revolution sensor securing screw
30 to 35
(3 to 3.5)
Output speed sensor securing screw
30 to 35
(3 to 3.5)
Suction filter cover securing screw
12 to 14
(1.2 to 1.4)
Screw securing valve bodies to control module
12 to 14
(1.2 to 1.4)
Screws connecting pressure switch to valve body
5 to 8
(0.5 to 0.8)
Electronic gearbox connector screws
5 to 7
(0.5 to 0.7)
Pressure plugs on gearbox bottom
10 to 13
(1 to 1.3)
Output flange screws
30 to 35
(3.0 to 3.5)
Vent
12 to 16
(1.2 to 1.6)
TOOLS
TOOL NO.
DENOMINATION
99360322
Engine flywheel rotation tool
99370629
Gearbox bearing support during vehicle disconnection and
re-connection
99374013
Keying device for sealing ring assembly
Removal
In order to disassemble the transmission, proceed as follows:
- place the vehicle over a ditch or a lift bridge;
- disconnect the battery leads in order to avoid possible
short circuits;
- drain transmission oil at running temperature (71 to 93
ºC) by removing the dump cap(6);
- close the heat exchanger cooling liquid taps.
From the upper part of the transmission, remove:
- hose clips (11), (14), (16) of hoses (12) and (15);
- electrical connections (
⇐) on the transmission and the
accumulator (22);
- the delivery line (21) to the accumulator (22);
From the lower part of the transmission, remove:
- clamp (4), screw (5) and nut (18); then remove pipe (7);
- cross member (3) by removing screws (19);
- hose clamps (2) and (17), brackets (1) and (20) and re-
move hoses (12) and (15) from the oil cooler (position
hose (12) in such a way that it does not impede removal
of the transmission).
- disconnect the propeller shaft (10) from the trans-
mission output flange.
- remove bolts (8) through access hole A, turning the fly-
wheel with tool (9) 99360322 to bring each bolt into
view.
- support the transmission on a hydraulic trolley jack
equipped with support 99370629.
- remove screws (13) and carefully remove the trans-
mission from the vehicle.
Refitting
Carry out the steps that were performed to disassemble
backwards, and tighten screws and nuts to prescribed torque.
On completion of the refitting operation, restore the coolant
and transmission fluid to their correct levels.
52403
Figure 7
GEARBOXES ALLISON MD 3060 PR ALLISON 3066 MD PR
189
S
TRALIS
AT/AD
REMOVAL AND REFITTING OF THE
TRANSMISSION
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