WARNING
Wear approved eye protection when performing
transmission pressure checks. If oil contacts
eyes, seek medical attention immediately.
Failure to comply may result in injury to
personnel.
CLUTCH PRESSURE TEST
Change 1 2-1561
TM 9-2320-365-20-2
Table 2-40. Off-Going Clutch Pressure Tap
Sub
Code
Off-Going
Clutch(s)
Sub Code Meaning
N3-N2 or N2-N3 Shift
08
18
28
29
38
39
48
49
58
59
68
69
78
99
1-N1 Shift
2-N1 Shift
2-N2 Shift
3-N1 Shift
3-N3 Shift
4-N1 Shift
4-N3 Shift
5-N1 Shift
5-N3 Shift
6-N1 Shift
6-N4 Shift
R-N1 Shift
L-N1 Shift
C3
C1
C1 & C4
C1
C1 & C3
C1
C1 & C2
C1 & C2
C2 & C3
C2
C2 & C4
C2
C3
C2 & C4
(1) Remove front and rear propeller shafts
(para 9-2).
(2) Position drain pan under pressure tap.
(3) Remove pressure tap plug and preformed
packing from off-going clutch indicated by
the sub code. Refer to Table 2-40. Off-
Going Clutch Pressure Tap. Discard
preformed packing.
(4) Connect tube to boss adapter, hose, and
pipe to tube adapter to clutch pressure
tap.
(5) Perform STE/ICE-R Test # 50
(TM 9-4910-571-12&P).
(6) Start engine (TM 9-2320-365-10) and run
at idle.
(7) With parking brake applied, make shift
indicated by sub code while assistant
notes reading on STE/ICE-R. Refer to Table
2-40. Off-Going Clutch Pressure Tap.
(8) If off-going clutch pressure does not go to
8 psi (55 kPa) or less when shift is made,
notify DS Maintenance.
(9) If off-going clutch pressure does go to 8
psi (55 kPa) or less when shift is made,
replace WTEC III transmission ECU (para 8-7).
(10) Shut down engine (TM 9-2320-365-10).
(11) Remove pipe to tube adapter, hose, and
tube to boss adapter from pressure tap.
(12) Position preformed packing and pressure
tap plug in control valve module.
(13) Tighten pressure tap plug to 84-120 lb-in.
(9-14 N·m).
(14) Remove drain pan under pressure tap.
(15) Install front and rear propeller shafts
(para 9-2).
(16) Clear diagnostic codes (para 8-5).
