Allison B 400 - Page 192

Copyright © 1998 General Motors Corp. B–7
APPENDIX B — CHECKING CLUTCH PRESSURES
WTEC II ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL
HD — High
Speed
1780–1820 Neutral C5 1800–2100
[261–305]
0–70 (C5)/[0–10]
Reverse C3 C5 1800–2100
[261–305]
0–70 (C3)/[0–10]
0–70 (C5)/[0–10]
1C C1 C5 1550–1800
[225–261]
0–70 (C1)/[0–10]
0–50 (C5)/[0–7]
2C C1 C4 1550–1800
[225–261]
0–70 (C1)/[0–10]
0–35 (C4)/[0–5]
2L C1 C4 LU 1050–1400
[152–203]
0–70 (C1)/[0–10]
0–35 (C4)/[0–5]
950–1400
[138–203]
3C C1 C3 1550–1800
[225–261]
0–70 (C1)/[0–10]
0–50(C3)/[0–7]
3L C1 C3 LU 1050–1400
[152–203]
0–70 (C1)/[0–10]
0–50 (C3)/[0–7]
950–1400
[138–203]
4C C1 C2 1550–1800
[225–261]
0–70 (C1)/[0–10]
0–70 (C2)/[0–10]
4L C1 C2 LU 1050–1400
[152–203]
0–70 (C1)/[0–10]
0–70 (C2)/[0–10]
950–1400
[138–203]
5C C2 C3 1190–1380
[173–200]
0–70 (C2)/[0–10]
0–70 (C3)/[0–10]
5L C2 C3 LU 900–1250
[131–181]
0–70 (C2)/[0–10]
0–70 (C3)/[0–10]
850–1300
[124–189]
6C C2 C4 1190–1830
[173–200]
0–70 (C2)/[0–10]
0–35 (C4)/[0–5]
6L C2 C4 LU 900–1250
[131–181]
0–70 (C2)/[0–10]
0–35 (C4)/[0–5]
850–1300
[124–189]
Table B–2. Main Pressure and Clutch Pressure Specifications
(Sump Fluid Temperature Same as in Table B–1) (cont’d)
Transmission
Model/Test
Type
Engine
rpm Range
Clutches
Applied
Main Press.
Spec
kPa/[psi]
Range Clutch
Press. Spec*
kPa/[psi]
LU Clutch
Press. Spec
kPa/[psi]
D’BOX
MAIN
Press. Spec
kPa/[psi]
* Subtract clutch pressure from main pressure; the difference must fall within the specifications given (unless a pressure
range is supplied).