Allison B 400 - WT Hydraulic Schematic - 1 St Range

WTEC II ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL
APPENDIX H — HYDRAULIC SCHEMATICS
H–4 Copyright © 1998 General Motors Corp.
V01123.04
Torque
Converter
CONVERTER IN
CONVERTER OUT
Overdrive
Knockdown
Conv
Flow
Cooler
Lube
Filter
Lube
Regulator
Conv
Regulator
Lockup
Lube
Lube
LU
N/C
C4
N/C
FWD
N/C
ON—OFF
EX
WT HYDRAULIC SCHEMATIC — 1st RANGE
FD
G
C1
N/O
C3
N/C
AC
EX
C2
Latch
C1 C4
Exhaust
Backfill
C1
Latch
Main
Regulator
Ctl.
Main
Reg.
C2
C1
C3C2
Main
Filter
Pressure Relief
Suction
Filter
Main
Main
(MD, B 300, and
B 400 models only)
C4 C5
C3 Pressure
Switch
Accumulator/
Relay Valve
MAIN
CONTROL MAIN
EXHAUST
SUCTION
COOLER/LUBE
EX. BACKFILL
CONVERTER
C1
C5
FWD. KDN.
SOLENOIDS ENERGIZED
CLUTCH APPLIED C1, C5
Pump
EX
Sump
EFFECTIVE S/N:
MD/B 300/B 400
S/N 6510024410
HD/B 500
ALL S/N
EX
C5
B E G
C3
EX
C2
N/O
B
C5
N/C
E
C5
B E G
Figure H–4. WT Hydraulic Schematic —1st Range