Allison B 400 - Main Pressure and Clutch Pressure Specifications

WTEC II ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL
B–4 Copyright © 1998 General Motors Corp.
APPENDIX B — CHECKING CLUTCH PRESSURES
Table B–2. Main Pressure and Clutch Pressure Specifications
(Sump Fluid Temperature Same as in Table B–1)
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]
MD — Idle
(except 3070)
580–620 Neutral C5 1500–1900
[218–276]
Reverse C3 C5 1500–1900
[218–276]
1C C1 C5 1300–1900
[189–276]
2C C1 C4 1300–1900
[189–276]
MD 3070 —
Idle
Neutral C5 1500–1900
[218–276]
1480–1900
[215–276]
Reverse C3 C5 1500–1900
[218–276]
1480–1900
[215–276]
LowC C3 C6 1500–1900
[218–276]
1480–1900
[215–276]
1C C1 C5 1500–1900
[218–276]
1280–1900
[186–276]
MD —
High Speed
(except 3070)
2080–2120 Neutral C5 1500–2300
[218–334]
0–35 (C5)
[0–5]
Reverse C3 C5 1500–2300
[218–334]
0–35 (C3)
[0–5]
0–35 (C5)
[0–5]
1C C1 C5 1500–2100
[218–305]
0–80 (C1)
[0–11.6]
0–35 (C5)
[0–5]
2C C1 C4 1500–2100
[218–305]
0–80 (C1)
[0–11.6]
0–35 (C4)
[0–5]
2L C1 C4 LU 1000–1400
[145–203]
0–80 (C1)
[0–11.6]
0–35 (C4)
[0–5]
950–1400
[138–203]
* Subtract clutch pressure from main pressure; the difference must fall within the specifications given (unless a pressure
range is supplied).