Allison B 400 - WT Hydraulic Schematic - 3 Rd Range

WTEC II ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL
APPENDIX H — HYDRAULIC SCHEMATICS
H–6 Copyright © 1998 General Motors Corp.
V01125.04
EX
Torque
Converter
CONVERTER IN
CONVERTER OUT
Overdrive
Knockdown
Conv
Flow
C4
N/C
C2
Latch
C1 C4
Exhaust
Backfill
C1
Latch
Cooler
Lube
Filter
Lube
Regulator
Main
Regulator
Ctl.
Main
Reg.
EX
EX
WT HYDRAULIC SCHEMATIC — 3rd RANGE
D
C4 C5
C3
C2
C1
N/O
C5
N/C
A
E
EX
Conv
Regulator
C1
Lockup
Lube
Lube
C3 Pressure
Switch
C5
C3C2
Accumulator/
Relay Valve
Main
Filter
Pressure Relief
Pump
Sump
Suction
Filter
Main
Main
(MD, B 300, and
B 400 models only)
SOLENOIDS ENERGIZED
CLUTCH APPLIED C1, C3 LOCKUP
MAIN
CONTROL MAIN
EXHAUST
SUCTION
COOLER/LUBE
EX. BACKFILL
CONVERTER
FWD. KDN.
LOCKUP
C1
C3
EFFECTIVE S/N:
MD/B 300/B 400
S/N 6510024410
HD/B 500
ALL S/N
B C F G
LU
N/C
F
C2
N/O
B
C3
N/C
C
FWD
N/C
ON—OFF
G
B C F G
EX
Figure H–6. WT Hydraulic Schematic — 3rd Range