Allison B 300 - WT Hydraulic Schematic - 4 Th Range

Copyright © 1998 General Motors Corp. H–7
WTEC II ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL
APPENDIX H — HYDRAULIC SCHEMATICS
C3
V01126.04
EFFECTIVE S/N:
MD/B 300/B 400
S/N 6510024410
HD/B 500
ALL S/N
Torque
Converter
CONVERTER IN
CONVERTER OUT
Cooler
Lube
Filter
WT HYDRAULIC SCHEMATIC — 4th RANGE
Conv
Regulator
Lockup
Lube
Lube
Overdrive
Knockdown
Conv
Flow
Main
Regulator
Main
Filter
Pressure Relief
Pump
Sump
Suction
Filter
Main
(MD, B 300, and
B 400 models only)
Lube
Regulator
EX
EX
EX
C1 C4
Exhaust
Backfill
C4 C5
C2
C1
C5
C3C2
Main
EX
C2
N/O
C4
N/C
Ctl.
Main
Reg.
BD
C1
N/O
C3
N/C
C5
N/C
AC
E
C2
Latch
C1
Latch
C3 Pressure
Switch
Accumulator/
Relay Valve
MAIN
CONTROL MAIN
EXHAUST
SUCTION
COOLER/LUBE
EX. BACKFILL
CONVERTER
FWD. KDN.
SOLENOIDS ENERGIZED
CLUTCH APPLIED C1, C2 LOCKUP
LOCKUP
C1
C2
F G
EX
FWD
N/C
ON—OFF
G
LU
N/C
F
F G
Figure H–7. WT Hydraulic Schematic — 4th Range