Allison B 400 - WT Hydraulic Schematic - Reverse

Copyright © 1998 General Motors Corp. H–3
WTEC II ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL
APPENDIX H — HYDRAULIC SCHEMATICS
V01130.04
C3
EX
Torque
Converter
CONVERTER IN
CONVERTER OUT
Overdrive
Knockdown
Conv
Flow
LU
N/C
C2
N/O
C4
N/C
FWD
N/C
ON—OFF
C2
Latch
C1 C4
Exhaust
Backfill
C1
Latch
Cooler
Lube
Filter
Lube
Regulator
Main
Regulator
Ctl.
Main
Reg.
EX
EX
WT HYDRAULIC SCHEMATIC — REVERSE
F B D
G
C4 C5
C3
C2
C1
N/O
C3
N/C
C5
N/C
AC
E
EX
Conv
Regulator
C1
Lockup
Lube
Lube
C3 Pressure
Switch
C2
Accumulator/
Relay Valve
MAIN
CONTROL MAIN
EXHAUST
SUCTION
COOLER/LUBE
EX. BACKFILL
CONVERTER
C3
SOLENOIDS ENERGIZED
CLUTCH APPLIED C3, C5
C5
Main
Filter
Pressure Relief
Pump
Sump
Suction
Filter
Main
EX
Main
(MD, B 300, and
B 400 models only)
EFFECTIVE S/N:
MD/B 300/B 400
S/N 6510024410
HD/B 500
ALL S/N
A B C EA B C E
C5
Figure H–3. WT Hydraulic Schematic — Reverse