Page 77 - Hydra-matic 6 Speed RWD Technician's Guide (October 2005)

2
58B

2d 1-2-3-4 Clutch:
1e #6 Ball Check Valve:
1d #1 Ball Check Valve:
1-2-3-4 CLUTCH APPLIES
1c Clutch Select Valve 3:
1b Clutch Select Valve 2:
the 1-2-3-4 clutch plates.
1-2-3-4 clutch boost valve.
2c 1-2-3-4 Clutch Boost Valve:
(full line pressure) to the clutch.
Page 82
the 1-2-3-4 clutch regulator valve.
then routed to #1 ball check valve.
2b 1-2-3-4 Clutch Regulator Valve:
2a C1234 Pressure Control Solenoid 5:
then routed to the clutch select valve 3.
fluid is then routed to the clutch select valve 2.
COMPLETE HYDRAULIC CIRCUIT
the 1234 clutch boost valve and the 1-2-3-4 clutch.
CLUTCH
FLUID PRESSURE IS DIRECTED TO THE 1-2-3-4 CLUTCH
SPRAG
clutch fluid is also routed through orifice #29 and then to the
fluid circuit. PCS1234 clutch fluid is then routed through
Drive brake fluid at the clutch select valve 3 passes through
CB26/C1234 feed fluid passes through the 2-6 clutch regulator
the valve and enters the Drive B fluid circuit. Drive B fluid is
orifice #35 to the 1-2-3-4 clutch regulator valve. PCS1234
enters the 1234 clutch feedback circuit. As PCS 1234 clutch
PCS1234 clutch fluid moves the 1-2-3-4 clutch regulator valve
against 1-2-3-4 clutch regulator valve spring force to allow
fluid to force drive B fluid into the CB26/C1234 feed passage.
the 1234 clutch boost valve against the 1234 clutch boost
to the normally closed pressure switch 3 and opens the switch.
valve and enters the PS3 fluid circuit. PS3 fluid is then routed
CB26/C1234 feed fluid seats the #6 ball check valve against
1234 clutch feed fluid is routed through orifice #33 and then to
valve spring. 1234 clutch fluid passes through the valve and
Drive B fluid seats the #1 ball check valve against drive 1-6
Drive fluid at the clutch select valve 2 passes through the
allows line fluid pressure to enter the drive fluid circuit. Drive
valve and enters the drive brake circuit. Drive brake fluid is
full feed position sending full 26 CL/1234 CL feed pressure
CB26/C1234 feed fluid is routed to the #6 ball check valve,
1234 clutch fluid circuit. 1234 clutch fluid is then routed to
piston against spring force and compensator feed fluid to apply
The manual valve is moved to the Drive (D) position and
through orifice #32 before entering the 1234 clutch feed circuit.
1234 clutch fluid enters the 1234 clutch housing to move the
PCS1234 clutch fluid pressure acts on a differential area moving
boost valve opens the 1234 clutch feedback circuit to exhaust.
fluid pressure is increased to a given value, the 1234 clutch
allowing actuator feed limit fluid to enter the PCS1234 clutch
The C1234 Pressure Control Solenoid 5 is commanded ON
through orifice #43 and, to the 2-6 clutch regulator valve.
1234 clutch feed fluid to pass through the valve and enter the
the 1234 clutch feed passage forcing CB26/C1234 feed fluid
This results in the 1234 clutch regulator valve moving to the
N.L.
C35R
N.L.
N.L.
LINE
N.H.
N.H.
C1234
CB26
N.H.
ON
TCC
ON
N.C.
SOL 2
SHIFT
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
SOLENOID
CONTROL
PRESSURE
ON
CBR1/C456
PRESSURE
PRESSURE
ON
OFF
PRESSURE
OFF
PRESSURE
SOLENOID 5
SOLENOID 2
OFF
PRESSURE
SOLENOID
SOLENOID 4
SOLENOID 3
2a
ACT FD LIM 1a Manual Valve: SOL 1 SOL 1 SHIFT ENGINE BRAKING N.C. AND THE LOW & REVERSE CLUTCH TO PROVIDE 1 VALVE ASSEMBLY SOLENOID CONTROL circuits: braking mode the following changes occur within the hydraulic pressure control solenoid 5 is commanded ON and in the engine engine braking. In this operating range, the normally-low C1234 from the Neutral (N) position, the transmission will provide When the gear selector lever is moved to the Drive (D) range ON ON ON OFF OFF ON APPLIED APPLIED HOL
1-2-3-4
PCS TCC
1
3
N.C.
N.C.
PS1
PS3
PCS LINE ACT FD LIM SOL 2 PCS 26 CL ACT FD LIM ACT FD LIM COMP FEED
ACT FD LIM
ACT FD LIM
ACT FD LIM ACT FD LIM LINE 2d
PCS 1234 CL
PCS CBR1/456 CL SOL 1 CLUTCH REVERSE 3-5
PS3
LINE LINE LINE 35 REV CLUTCH 1234 CLUTCH
COMP FD COMP FD 26 COMP FD
EX BF PCS 26 CL PCS CBR1/456 CL
44
42
EX BACKFILL
36
EX BACKFILL
48
EX 39 1234 CLUTCH COMP FD
2b
ACT FD LIM
SOL 2
35
EX 456 CL 456 CL BOOST VALVE 31 EX
SHTL
PCS 35 REV CL
2-6 GAIN
47
EX BF EX BF 30 LINE EX BF
EX 46 26 CL 2-6 CLUTCH REG 43 CBR1/456 CL FD 38
34
35R FD 3-5 REV CL REGULATOR VALVE PS1 CBR1/C456 CL REG VALVE
ACT FD LIM PS3 EXHAUST BACKFILL EX
EX PRESSURE RELIEF VALVE PS5 456 CLUTCH
33
PCS 1234 CL
1234 CL DFLT
PS4 1234 CL EX 35 REV CL FDBK CBR1 FDBK EX ACT FD LIM LINE
LINE
EX 35 REV CL 26 CL 41 26 CL/1234 CL FD CBR1/456 CL FD 37 DRIVE 1-6 SOL 1 ASSEMBLY CLUTCH 4-5-6
COMP FD
1-2-3-4 CL REGULATOR VALVE
1234 CL FD
50
1234 CL 45 26 CL 1234 CL 1234 CLUTCH (Engine Braking)
35 CL REV FD DRIVE RANGE - 1ST GEAR
#6
32
26 CL/1234 CL FD 26 CLUTCH ASSEMBLY 2-6 CLUTCH
Figure 54
1234 CL FDBK
CBR CBR
51
1e
CBR 1
49
SOL 1 SOL 1 SOL 1
ACT FD LIM ASSEMBLY CENTER SUPPORT
1234 CL
12
ACT FEED LIMIT VALVE
LINE
2c
LINE ASSEMBLY CLUTCH REVERSE LOW &
DRIVE 1-6
CBR1/CBR FD
#1
LINE
REVERSE 1d CSV2 LATCH DRIVE
COMP FD
PCS 1234 CL 1234 CL BOOST VALVE
DRIVE
29
1234 CL DRIVE BRAKE
1234 CL DFLT
1234 CL FDBK DRV B
REG APPLY
EX EX DRIVE LINE
CBR1/456 CL FD
REVERSE 1c EX EX SOL 1 1a
11
456 CL FD 456 CL FD MANUAL VALVE
456 CL
REVERSE
DRIVE 1-6
SOL 2
14
EX 35 CL REV FD CBR EX
CBR1/CBR FD 1b EX
CLUTCH SELECT VALVE 3
EX TCC REGULATOR VALVE SHTL CBR1/CBR FD EX
REG APPLY
13
LINE FD REG VALVE COMPENSATOR PCS TCC 21 DRIVE 1-6
CLUTCH SELECT VALVE 2
EX #2 M
COMP FD DRIVE
1234 CL DFLT FD EX D
EX 9 1234 CL DFLT FD N
CSV3 ENABLE
10
SOL 1 20 35 REV CL REVERSE R
456 CL 22 CSV2 ENABLE P
#3
59