LIFT TRUCK SERIES March 29, 2005
G35S-2 G40S-2 G45S-2 G40SC-2 G45SC-2 G50SC-2 CODE 3100
D35S-2 D40S-2 D45S-2 D40SC-2 D45SC-2 D50SC-2 LT3100-C5a
G50S-2 G60S-2 G70S-2
D50S-2 D60S-2 D70S-2
SUBJECT: 2-SPEED TRANSMISSION CONTROL VALVE CHANGE
(*Revised: June 13, 2005)
The transmission control valve on the above listed truck models has changed. Unlike
the old control valve, which had three solenoids beneath a cover plate, the new control
valve is easily identified by the four externally mounted solenoids on the side of the
valve body. This change requires an extra relay necessitating new wiring harnesses. It
also changes the location of the inching spool slightly, which requires different linkage.
The new control valve cannot directly replace the old one unless all parts listed in the
following table are replaced together. A kit will be made available later to convert to the
new valve configuration when the supply of old control valves is exhausted.
The table below lists the first trucks to receive the new control valve
TRUCK TRANSMISSION
MODEL
SERIAL NUMBER SERIAL NUMBER
CB-00630 ~ UP
G35S-2 G40S-2 G45S-2 E9-00241 ~ UP
PT45-D4J007 ~ UP
G40SC-2 G45SC-2 G50SC-2 G2-00137 ~ UP
G3-00115 ~ UP
C9-01717 ~ UP
D35S-2 D40S-2 D45S-2 E8-00512 ~ UP
PT46-D4J001 ~ UP
D40SC-2 D45SC-2 D50SC-2 FZ-00136 ~ UP
G1-00180 ~ UP
ER-00030 ~ UP
GG-00114 ~ UP
G50S-2 G60S-2 G70S-2 PT56-D4J006 ~ UP
FY-00101 ~ UP
GH-00102 ~ UP
GE-00133 ~ UP
D50S-2 D60S-2 D70S-2 PT55-D4J001 ~ UP
GF-00112 ~ UP
Page 1 of 4
Daewoo America Website: http://www.daewooamericalifttrucks.com
*Rev. control valve connections
Changed Items - D/G35/40/45S-2 and D/G40/45/50SC-2 Trucks
D35S-2 D40S-2 D45S-2 G35S-2 G40S-2 G45S-2
D40SC-2 D45SC-2 D50SC-2 G40SC-2 G45SC-2 G50SC-2
Item
C9 / E8 / FZ / G1 CB / E9 / G2 / G3
Before After Before After
Transmission As A233043 A353067 A233089 A353068
Harness As - Inst. A354001 A354014 A234109 A354014
Lever As - Brake A231340 A351086
Lever As - Inching A231341 A351084 <<==
Plate - Relay * A231963 A351130
Harness As - Chassis - - - A354017
Relay A144149 One additional D167422 One additional
* Relay position identification only.
Changed Items - D50/60/70S-2 & G50/60/70S-2 Trucks - 2 Speed
D50/70S-2 G50/70S-2 G50/70S-2
GE / GF ER / GG FY / GH
GROUP PART NAME
PART NO. PART NO. PART NO.
BEFORE AFTER BEFORE AFTER BEFORE AFTER
Engine/Trans GP Transmission As. A131451 A363156 A138556 A363157 <<==
Inching Lever As. A131444 A362176
Brake/Inching -
Inching Bracket As. A131446 A362177 <<==
Control GP
Plunger D150179 -
Instrument Harness A364008 A364068 A134175 A364070 A364038 A364070
Wiring GP Engine Harness A364002 A364072 - -
Chassis Harness - - A134571 A134195 A364039 A364064
Relay Harness A364009 A364071 - - - -
Relay Mtg. Plate A362150 A362178 - - - -
Relay GP
A144149 4EA ->
Relay D187477 3EA -> 4EA
5EA
Control GP –
Jumper Harness As. - - A134061 A234144 - -
Park Brake
(ASC 200)
Autoshift Harness As. A364041 A364069 A134185 A364069 A364049 A364069
Controller GP
Changeover AR -
Combination Jumper Harness As. - - D287618 A214339 - -
Lamp
Page 2 of 4
Daewoo America Website: http://www.daewooamericalifttrucks.com
*Rev. control valve connections
Transmission Hydraulic Schematic for New Control Valve
Trans. Relief: 200 ± 60 PSI
Transmission Electrical Schematics for New Control Valve
The latest truck electrical schematics including this new arrangement are available
through the DHIAC service literature website.
Check for "Electrical Schematic" entitled "ES-4 sol trans C/V" for the applicable truck
model.
* REV: June 13, 2005: 4-Solenoid Control Valve Test Port Markings for G/D70S-2
and 2-Speed Transmissions may be misleading:
When checking transmission pressures or solenoid voltages please review the chart
below to determine the correct solenoid-to-test port connections. The markings on the
housing can be misleading and result in incorrect diagnosis of problems.
Page 3 of 4
Daewoo America Website: http://www.daewooamericalifttrucks.com
*Rev. control valve connections
Transmission Control Valve Test Port Marking
Actual Housing Identification R2 R1 F1 F2
4 Ton Truck
Rev 2 Rev 1 Fwd 1 Fwd 2
Original (Correct)
Connection
5 Ton Truck Fwd 2 Fwd 1 Rev 1 Rev 2
4 Ton Truck
Rev 2 Rev 1 Fwd 1 Fwd 2
New (Correct)
Connection
5 Ton Truck Fwd 1 Fwd 2 Rev 1 Rev 2
Page 4 of 4
Daewoo America Website: http://www.daewooamericalifttrucks.com
*Rev. control valve connections
