Page 69 - Hydra-matic 6 Speed RWD Technician's Guide (October 2005)

2
54B

force.

3d 3-5 Reverse Clutch:
2c #5 Ball Check Valve:
1c Clutch Select Valve 2:
2a Clutch Select Valve 3:
2b Low & Reverse Clutch:
3c 3-5 Reverse Boost Valve:
3 3-5 REVERSE CLUTCH APPLIES
LOW & REVERSE CLUTCH APPLIES
Page 78
to apply the 3-5 reverse clutch plates.
3a C35R Pressure Control Solenoid 2:
3b 3-5 Reverse Clutch Regulator Valve:
orifice #40 to the 3-5 reverse boost valve.
through the valve allowing the switch to close.
COMPLETE HYDRAULIC CIRCUIT

CLUTCH
clutch select valve 3 to the low and reverse clutch assembly.
clutch reverse feed pressure (full line pressure) to the clutch.
#46 and then is routed to the 3-5 reverse clutch regulator valve.
holding capacity in Reverse (both piston areas are pressurized).
SPRAG
3-5 reverse supply circuit. 3-5 reverse supply fluid is then routed
the valve and enters the 3-5 reverse clutch feedback circuit. As
drive 1-6 circuit allowing 3-5 clutch reverse feed fluid to enter the
clutch boost valve spring. 3-5 reverse clutch fluid passes through
3-5 reverse feed circuit. 3-5 reverse feed passes through orifice
to #7 ball check valve and through orifice #25 where is enters the
pass through the valve and enter the 3-5 reverse clutch circuit. 3-5
orifice #48 to the 3-5 reverse clutch regulator valve and through
reverse clutch fluid is then routed to the 3-5 reverse clutch and the
5 reverse clutch feedback fluid. This allows 3-5 reverse feed to
valve against 3-5 reverse clutch regulator valve spring force and 3-
PCS 3-5 reverse clutch fluid moves the 3-5 reverse clutch regulator
PCS 3-5 reverse clutch fluid pressure acts on a differential area
The C35R Pressure Control Solenoid 2 is energized (HIGH)
moving the 3-5 reverse clutch boost valve against the 3-5 reverse
clutch circuit. PCS 3-5 reverse clutch fluid is then routed through
allowing actuator feed limit fluid to enter the PCS 3-5 reverse
3-5 reverse boost valve. PS1 fluid from pressure switch 1 exhausts
3-5 clutch reverse feed fluid seats #5 ball check valve against the
regulator valve moving to the full feed position sending full 3-5
valve in the off position. This allows reverse fluid to pass through
the valve and enter the 3-5 clutch reverse feed circuit. 3-5 clutch
ball check valve. CBR1/CBR FD fluid is also directed through the
reverse feed fluid from the clutch select valve 3 is also routed to #5
3 to combine with clutch select valve 3 spring force to keep the
to move the piston against spring force and compensator feed fluid
CSV2 enable fluid, present at the valve from Park position, continues
3-5 reverse clutch fluid enters the 1-2-3-4 & reverse clutch housing
Reverse fluid from the manual valve is routed to clutch select valve
to hold the clutch select valve 2 against clutch select valve 2 spring
PCS 3-5 reverse clutch fluid pressure is increased to a given value,
CBR & CBR1 fluid pressures are routed to both the inner and
The clutch was already applied in Park, but is applied with more
outer areas of the low and reverse clutch piston to hold the piston
against spring force and hold the low and reverse clutch plates.
the 3-5 reverse clutch boost valve opens the 3-5 reverse clutch
feedback circuit to exhaust. This results in the 3-5 reverse clutch
N.L.
N.L.
LINE
N.H.
C35R
N.L.
CB26
N.H.
N.H.
C1234
ON
TCC
N.C.
OFF
SHIFT
SHIFT
SOL 2
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
PRESSURE
SOLENOID
PRESSURE
ON
ON
PRESSURE
CBR1/C456
SOLENOID
SOLENOID 5
PRESSURE
SOLENOID 2
OFF
PRESSURE
PRESSURE
OFF
OFF
SOLENOID 4
SOLENOID 3
3a
ACT FD LIM enable circuit. SOL 1 SOL 1 fluid passage and fluid is forced through orifice #22 into the CSV2 N.C. Reverse fluid seats the #2 ball check valve against the solenoid 1 1b #2 Ball Check Valve: VALVE ASSEMBLY and clutch select valve 3. SOLENOID CONTROL directed into the reverse fluid circuit to the #2 ball check valve With the manual valve in the reverse position, line pressure is 1a Manual Valve: 1 FLUID PRESSURE DIRECTED IN PREPARATION FOR A SHIFT hydraulic and electrical systems:
PCS TCC
1
N.C.
PS1
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
PCS 1234 CL
PCS CBR1/456 CL SOL 1 CLUTCH REVERSE 3-5
LINE LINE LINE 35 REV CLUTCH 1234 CLUTCH
COMP FD COMP FD 26 COMP FD 3d
EX BF PCS 26 CL PCS CBR1/456 CL
44
EX BACKFILL
42
EX BACKFILL
36
48
EX PCS TCC 39 35 REV CLUTCH COMP FD
PCS 1234 CL
ACT FD LIM
35
EX 40 35R CL BOOST VALVE 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 PS1 CBR1/C456 CL REG VALVE 456 CLUTCH
ACT FD LIM 3-5 REV CL REGULATOR VALVE EX 3c PS3 EXHAUST BACKFILL EX
EX PRESSURE RELIEF VALVE PS5
33
PCS 1234 CL
1234 CL DFLT
PS4 1234 CL EX 35 REV CL FDBK CBR1 FDBK EX ACT FD LIM LINE
LINE
EX #7 35 REV CL 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
26 CL 41
35 REV CL 35 REV CLUTCH
45
25
50
DRIVE 1-6 REVERSE
3b
35R SPL #5 2c ASSEMBLY 2-6 CLUTCH
Figure 50
1234 CL FDBK
CBR CBR 26 CLUTCH
51
SOL 2
CBR 1
49
SOL 1 SOL 1 SOL 1
ACT FD LIM ASSEMBLY CENTER SUPPORT
12
ACT FEED LIMIT VALVE
LINE
LINE ASSEMBLY CLUTCH REVERSE LOW &
CBR1/CBR FD
35 REV CL
2a
REVERSE
LINE
COMP FD
REVERSE CSV2 LATCH DRIVE 2b
DRIVE
DRIVE BRAKE DRIVE BRAKE
1234 CL DFLT
DRV B
REG APPLY
EX DRIVE LINE
CBR1/456 CL FD
REVERSE EX EX SOL 1
11
456 CL FD 456 CL FD 1a
456 CL
REVERSE MANUAL VALVE
14
EX 35 CL REV FD CBR EX
1c
CBR1/CBR FD EX
DRIVE 1-6
EX TCC REGULATOR VALVESHTL CBR1/CBR FD EX 1b
CLUTCH SELECT VALVE 3
REG APPLY
LINE FD REG VALVE COMPENSATOR PCS TCC 21 DRIVE 1-6
13
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 R
SOL 2
456 CL 22 CSV2 ENABLE P
#3
55