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WTEC II TRANSMISSION ECU PUSHBUTTON SHIFT SELECTOR (TEPSS) DISPLAYS MAIN CODE 54 SUB CODE 01, 07, 10, 12, 17, 21, 23, 27, 32, 34, 43, 45, 54, 56, 65, 70, 71, 72, 80, 81, 82, 83, 85, 86, 92, 93, 95, 96, or 97 (cont) - TM-9-2320-366-20-20878
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TM-9-2320-366-20-2 M1083 Series 5-Ton 6 x 6 Medium Tactical Vehicles (MTV) Manual
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WTEC II TRANSMISSION ECU PUSHBUTTON SHIFT SELECTOR (TEPSS) DISPLAYS MAIN CODE 55 AND ANY SUB CODE
TM 9-2320-366-20-2
CLUTCH PRESSURE TEST
(1) Remove front and intermediate propeller shafts (para 9-2).
(2) Position drain pan under pressure tap.
(3) Remove pressure tap plug and preformed packing from clutch pressure tap indicated by the sub code.
Refer to Table 2-31. Clutch Pressure Tap.
(4) Connect tube to boss adapter, hose, and pipe to tube adapter to clutch pressure tap.
(5) Start engine (TM 9-2320-366-10-1).
(6) Perform STE/ICE-R Test # 50 (TM 9-4910-571-12&P).
(7) With parking brake applied, make shift indicated by sub code. Refer to Table 2-31. Clutch Pressure Tap.
(8) Accelerate engine until WTEC II TEPSS displays denied range. Refer to Table 2-31. Clutch Pressure Tap.
(9) Maintain sufficient engine speed to keep desired transmission range while assistant notes reading
on STE/ICE-R.
(10) Let engine return to idle.
(11) Shift WTEC II TEPSS into neutral.
(12) If one or more clutches failed to indicate proper pressure, notify DS Maintenance.
(13) If all clutches indicate proper pressure, replace WTEC II TEPSS (para 8-2).
(14) Shut down engine (TM 9-2320-366-10-1).
(15) Remove pipe to tube adapter, hose, and tube to boss adapter from clutch pressure tap.
(16) Position preformed packing and pressure tap plug in control valve module.
(17) Tighten pressure tap plug to 84-120 lb-in. (9-14 Nm).
(18) Remove drain pan under pressure tap.
(19) Install front and intermediate propeller shafts (para 9-2).
(20) Clear diagnostic codes (para 8-4).
Pressure Tap
Sub
Sub Code
Pressure
Pressure Readings
Code
Meaning
at Clutch(s)
at Taps
01
L-1
Upshift
C1 & C5
187-305 psi (1280-2100 kPa)
07
L-R
Shift
C3 & C5
215-276 psi (1480-1900 kPa)
10
1-L
Downshift
C3 & C6
215-334 psi (1480-2300 kPa)
12
1-2
Upshift
C1 & C4
142-203 psi ( 980-1400 kPa)
17
1-R
Shift
C3 & C5
215-276 psi (1480-1900 kPa)
21
2-1
Downshift
C1 & C5
186-305 psi (1280-2100 kPa)
23
2-3
Upshift
C1 & C3
142-203 psi ( 980-1400 kPa)
27
2-R
Shift
C3 & C5
215-334 psi (1480-2300 kPa)
Downshift
32
3-2
C1 & C4
142-203 psi ( 980-1400 kPa)
Upshift
34
3-4
C1 & C2
142-203 psi ( 980-1400 kPa)
Downshift
43
4-3
C1 & C3
142-203 psi ( 980-1400 kPa)
45
4-5
Upshift
C2 & C3
128-189 psi ( 880-1300 kPa)
54
5-4
Downshift
C1 & C2
142-203 psi ( 980-1400 kPa)
56
5-6
C2 & C4
128-189 psi ( 880-1300 kPa)
Upshift
65
6-5
C2 & C3
128-189 psi ( 880-1300 kPa)
Downshift
70
R-L
C3 & C6
215-276 psi (1480-1900 kPa)
Shift
71
R-1
Shift
C1 & C5
186-305 psi (1280-2100 kPa)
72
R-2
Shift
C1 & C4
142-203 psi ( 980-1400 kPa)
80
N1-L  Shift
C3 & C6
215-276 psi (1480-1900 kPa)
81
N1-1  Shift
C1 & C5
215-305 psi (1480-1900 kPa)
82
N1-2  Shift
C1 & C4
186-305 psi (1280-2100 kPa)
83
N1-3  Shift
C1 & C3
215-305 psi (1480-1900 kPa)
85
N1-5  Shift
C2 & C3
164-239 psi (1130-1650 kPa)
86
N1-6  Shift
C2 & C4
164-239 psi (1130-1650 kPa)
92
N2-2  Shift
C1 & C4
215-305 psi (1480-1900 kPa)
93
N3-3  Shift
C1 & C3
215-305 psi (1480-1900 kPa)
95
N3-5  Shift
C2 & C3
164-239 psi (1130-1650 kPa)
96
N4-6  Shift
C2 & C4
164-239 psi (1130-1650 kPa)
97
2-R
Shift
C3 & C5
215-305 psi (1480-1900 kPa)
Change 1

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