
PARTS MANUAL
GDP/GLP35-55LJ/MJ
(C813)

MODEL NOMENCLATURE
NOTE:
This parts manual contains alternate pages for certain assemblies. The truck model code can be used to determine
many of the assemblies on your lift truck (power, tire type, mast type). The complete truck model and serial number
are stamped into the nameplate. See Identification of Truck Serial Number on Page xiii for further information.

SECTIONS
1 GENERAL TRUCK
2 DIESEL ENGINE (1004.42)
3 LPG ENGINE (4.3L)
4 FUEL SYSTEM
5 ELECTRICAL SYSTEM
6 STEERING SYSTEM
7 BRAKE SYSTEM
8 TRANSMISSION
9 HYDRAULIC SYSTEM
10 MAST-TWO STAGE LIMITED FREE-LIFT
11 MAST-THREE STAGE FULL FREE-LIFT
12 MAST-TWO STAGE FULL FREE-LIFT
13 OPTIONS
14 NUMERICAL INDEX
This Parts Manual is divided into 15 major sections which are listed above. Quick reference to these sections can
be made by placing the right thumb on the tab of the desired section, bending the book back and thumbing the
pages to the corresponding tab.


GENERAL INFORMATION
ALPHABETICAL INDEX
DESCRIPTION PAGE NO.
A
ABBREVIATIONS QUICK REFERENCE SHEET .................................................................................................... x
AIR FILTER......................................................................................................................................................... 4.52
AIR SYSTEM...................................................................................................................................................... 4.50
ALPHABETICAL INDEX............................................................................................................................................ i
ALTERNATOR
MOUNT
GDP 35 LJ, GDP 40 LJ, GDP 45 MJ, GDP 50 MJ, GDP 55 MJ
D/B 07/2001⇒ ......................................................................................................................................... 2.14
⇒D/B 07/2001 ......................................................................................................................................... 2.12
⇒S/N C813A-02227Y ..................................................................................................................................... 5.30
AUDIBLE ALARM ............................................................................................................................................. 13.80
AUXILARY TUBE EXTENSION KIT
THREE STAGE FULL FREE-LIFT ................................................................................................................ 13.24
TWO STAGE LIMITED FREE-LIFT............................................................................................................... 13.22
B
BAFFLE AND ATTACHING PARTS
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ,GDP55MJ .................................................................................. 2.6
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ .................................................................................. 3.16
BRAKE ASSEMBLY
GLP/GDP35LJ, GLP/GDP40LJ ........................................................................................................................ 7.8
GLP/GDP45MJ, GLP/GDP50MJ, GLP/GDP55MJ .......................................................................................... 7.12
BRAKE RELAY ASSEMBLY ............................................................................................................................... 7.18
BRAKE SYSTEM
HYDROSTATIC TRANSMISSION..................................................................................................................... 7.6
POWERSHIFT TRANSMISSION...................................................................................................................... 7.2
C
CAB
ATTACHING PARTS...................................................................................................................................... 13.60
DOOR ASSEMBLY ....................................................................................................................................... 13.70
ELECTRICAL ................................................................................................................................................ 13.64
FRAME ......................................................................................................................................................... 13.58
WINDOWS AND WIPER MOTOR ................................................................................................................ 13.68
CAMSHAFT AND OIL SUMP
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ .................................................................................. 3.36
CARBURETOR
LPG
WITH LOW EMISSIONS ............................................................................................................................. 4.40
CARRIAGE
THREE STAGE FULL FREE-LIFT ................................................................................................................ 11.30
TWO STAGE FULL FREE-LIFT .................................................................................................................... 12.18
TWO STAGE LIMITED FREE-LIFT............................................................................................................... 10.16
CONTROL VALVE
TRANSMISSION............................................................................................................................................. 8.18
COOLANT PUMP
i

GENERAL INFORMATION
DESCRIPTION PAGE NO.
C (continued)
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ
D/B 09/2001⇒............................................................................................................................................. 2.36
⇒D/B 09/2001 ............................................................................................................................................. 2.34
COOLING
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ ............................................................................... 2.42
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ .................................................................................. 3.14
COUNTERWEIGHT ........................................................................................................................................... 1.12
CRANKSHAFT AND PISTON
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ
D/B 07/2001⇒............................................................................................................................................. 2.22
⇒D/B 07/2001 ............................................................................................................................................. 2.20
CYLINDER BLOCK
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ
D/B 07/2001⇒............................................................................................................................................. 2.18
⇒D/B 07/2001 ............................................................................................................................................. 2.16
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ .................................................................................. 3.28
CYLINDER HEAD
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ ............................................................................... 2.32
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ .................................................................................. 3.32
D
DIFFERENTIAL ASSEMBLY .............................................................................................................................. 8.24
DIRECTIONAL CONTROL PEDAL .................................................................................................................... 4.70
DIRECTIONAL CONTROL PEDAL LINKAGE.................................................................................................... 4.68
DISTRIBUTOR
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ .................................................................................. 5.32
DRIVE AXLE ...................................................................................................................................................... 8.26
HYDROSTATIC TRANSMISSION................................................................................................................... 8.30
E
ELECTRICAL SYSTEM
ALTERNATOR AND BATTERY
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ ............................................................................... 5.26
COWL
HYDROSTATIC TRANSMISSION ................................................................................................................. 5.8
POWERSHIFT TRANSMISSION .................................................................................................................. 5.4
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ
⇒S/N C813A-01696.................................................................................................................................... 5.14
S/N C813A-01697⇒.................................................................................................................................... 5.18
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ .................................................................................. 5.22
THROTTLE UP
HYDROSTATIC TRANSMISSION ............................................................................................................... 5.12
ENGINE AND ATTACHING PARTS
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ ............................................................................... 2.10
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ .................................................................................. 3.22
ENGINE MOUNT
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ ................................................................................. 2.8
POWERSHIFT TRANSMISSION
ii

GENERAL INFORMATION
DESCRIPTION PAGE NO.
E (continued)
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ ............................................................................... 3.26
EXHAUST
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ ............................................................................... 2.44
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ
WITHOUT LOW EMISSIONS
⇒S/N C813A02831A ................................................................................................................................. 3.6
S/N C813A02832A⇒................................................................................................................................. 3.8
THREE-WAY CATALYTIC CONVERTER WITH LOW EMISSIONS
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ
⇒S/N C813A02831A ............................................................................................................................... 3.10
S/N C813A02832A⇒............................................................................................................................... 3.12
EXHAUST MANIFOLD
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ
⇒S/N C813A02831A .................................................................................................................................... 3.2
S/N C813A02832A⇒ .................................................................................................................................... 3.4
F
FAN
DRIVE ASSEMBLY
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ .............................................................................. 2.2
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ ............................................................................... 3.18
FENDER
EXTENSION
GLP/GDP35LJ, GLP/GDP40LJ ................................................................................................................. 13.18
GLP/GDP45MJ, GLP/GDP50MJ, GLP/GDP55 MJ ................................................................................... 13.20
FILTER AND LOCK-OFF VALVE
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ
⇒S/N C813A01935Y .................................................................................................................................. 4.46
FILTER ASSEMBLY
HYDROSTATIC TRANSMISSION................................................................................................................... 8.42
FLOOR PLATES AND COVERS .......................................................................................................................... 1.6
FORK
HOOK TYPE
THREE STAGE FULL FREE-LIFT ............................................................................................................ 11.36
TWO STAGE FULL FREE-LIFT ................................................................................................................ 12.21
TWO STAGE LIMITED FREE-LIFT ........................................................................................................... 10.20
FREE-LIFT
THREE STAGE FULL FREE-LIFT ................................................................................................................ 11.18
FREE-LIFT CYLINDER
THREE STAGE FULL FREE-LIFT ................................................................................................................ 11.26
TWO STAGE FULL FREE-LIFT .................................................................................................................... 12.14
FUEL FILTER
LOW PRESSURE SYSTEM ........................................................................................................................... 4.12
FUEL INJECTION
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ ............................................................................... 4.14
FUEL SYSTEM
CLOSED LOOP
GLP 070 LJ - GLP 120 MJ
iii

GENERAL INFORMATION
DESCRIPTION PAGE NO.
F (continued)
D/B 12/2003⇒ ......................................................................................................................................... 4.36
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ
⇒D/B 12/2003 ......................................................................................................................................... 4.32
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ ................................................................................. 4.4
OPEN LOOP
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ
D/B 12/2003⇒ ......................................................................................................................................... 4.28
⇒S/N C813A-01935Y.............................................................................................................................. 4.20
S/N C813A-01936Y⇔D/B 12/2003 ......................................................................................................... 4.24
FULL SUSPENSION SEAT
SHEET 1 OF 2 ................................................................................................................................................ 1.22
SHEET 2 OF 2 ................................................................................................................................................ 1.24
G
GOVERNOR
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ .................................................................................. 4.49
H
HEADER HOSE
THREE STAGE FULL FREE-LIFT ................................................................................................................ 11.38
TWO STAGE FULL FREE-LIFT .................................................................................................................... 12.22
TWO STAGE LIMITED FREE-LIFT
⇒S/N A749A-02522Z, ⇒S/N A750A-02672Z ........................................................................................... 10.22
S/N A749A-02523Z⇒, S/N A750A-02673Z⇒........................................................................................... 10.26
HEADLIGHTS, REAR LIGHTS, AND SIDE LAMPS
WITHOUT CAB
⇒S/N C813A02993A ................................................................................................................................ 13.26
HEADLIGHTS, REAR LIGHTS, AND SIDE LIGHTS
WITHOUT CAB
S/N C813E02994A⇒ ................................................................................................................................ 13.28
HEATER ........................................................................................................................................................... 13.74
HEATER INSTALLATION
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ ............................................................................. 13.78
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ ................................................................................ 13.76
HOOD AND COVERS .......................................................................................................................................... 1.2
HOW TO FIND THE DESIRED PART NUMBER.................................................................................................... xii
HOW TO USE THE ILLUSTRATED PARTS MANUAL ........................................................................................... xii
HYDRAULIC CONTROL LINES
FOUR FUNCTION .......................................................................................................................................... 9.12
THREE FUNCTION ........................................................................................................................................ 9.10
HYDRAULIC CONTROL VALVE
SHEET 1 OF 2
THREE AND FOUR FUNCTION
S/N C813A2192Y⇒................................................................................................................................. 9.22
SHEET 2 OF 2
THREE AND FOUR FUNCTION
S/N C813A2192Y⇒................................................................................................................................. 9.26
THREE AND FOUR FUNCTION
iv

GENERAL INFORMATION
DESCRIPTION PAGE NO.
H (continued)
⇒S/N C813A-2191Y ................................................................................................................................... 9.20
HYDRAULIC CONTROL VALVE ATTACHING PARTS
FOUR FUNCTION .......................................................................................................................................... 9.16
THREE FUNCTION ........................................................................................................................................ 9.14
WITH HYDROSTATIC TRANSMISSION ........................................................................................................ 9.18
HYDRAULIC FILTER HOUSING ........................................................................................................................ 9.28
HYDRAULIC PUMP............................................................................................................................................ 9.34
HYDRAULIC PUMP AND MOUNT
HYDROSTATIC TRANSMISSION................................................................................................................... 8.36
HYDRAULIC SYSTEM
WITH HYDROSTATIC TRANSMISSION .......................................................................................................... 9.6
WITH POWERSHIFT TRANSMISSION ........................................................................................................... 9.2
I
IDENTIFICATION OF ATTACHMENT AND SIDE-SHIFT CARRIAGE SERIAL NUMBERS................................... xv
IDENTIFICATION OF MAST SERIAL NUMBER ................................................................................................... xiv
IDENTIFICATION OF TRUCK SERIAL NUMBER ................................................................................................. xiii
INNER AND FREE LIFT MAST
TWO STAGE FULL FREE-LIFT ...................................................................................................................... 12.6
INNER MAST
THREE STAGE FULL FREE-LIFT ................................................................................................................ 11.10
TWO STAGE LIMITED FREE-LIFT................................................................................................................. 10.4
INPUT AND DIRECTIONAL CLUTCH ............................................................................................................... 8.16
INSTRUMENT PANEL ........................................................................................................................................ 5.11
INTERMEDIATE MAST
THREE STAGE FULL FREE-LIFT .................................................................................................................. 11.6
L
LABELS .............................................................................................................................................................. 1.29
LIFT CYLINDER
TWO STAGE FULL FREE-LIFT .................................................................................................................... 12.10
LIFT PUMP
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ ............................................................................... 4.18
LOAD BACKREST
TWO STAGE FULL FREE-LIFT .................................................................................................................... 12.26
LOAD BACKREST EXTENSION
THREE STAGE FULL FREE-LIFT ................................................................................................................ 11.34
TWO STAGE LIMITED FREE-LIFT............................................................................................................... 10.18
LOW PRESSURE SYSTEM
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ
⇒D/B 07/2001 ............................................................................................................................................... 4.8
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ)
D/B 07/2001⇒............................................................................................................................................. 4.10
LPG CONVERTER
OPEN LOOP
⇒S/N C813A-01935Y ................................................................................................................................. 4.47
S/N C813A-01936Y⇔D/B 10/2003 ............................................................................................................. 4.48
LPG TANK BRACKET
v

GENERAL INFORMATION
DESCRIPTION PAGE NO.
L (continued)
FIXED ............................................................................................................................................................. 4.42
SWING OUT ................................................................................................................................................... 4.44
M
MAIN CYLINDER
THREE STAGE FULL FREE-LIFT ................................................................................................................ 11.22
TWO STAGE LIMITED FREE-LIFT............................................................................................................... 10.12
MAIN LIFT
THREE STAGE FULL FREE-LIFT ................................................................................................................ 11.14
TWO STAGE LIMITED FREE-LIFT................................................................................................................. 10.8
MANIFOLD VALVE ............................................................................................................................................. 8.20
MANIFOLDS
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ
D/B 07/2001⇒............................................................................................................................................. 2.30
⇒D/B 07/2001 ............................................................................................................................................. 2.28
MAST INSTALLATION ........................................................................................................................................ 9.30
MASTER CYLINDER AND BRAKE BOOSTER ................................................................................................. 7.14
MIRROR
DUAL WITHOUT CAB .................................................................................................................................. 13.36
N
NON-SUSPENSION SEAT ................................................................................................................................. 1.18
O
OIL FILTER
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ ............................................................................... 2.27
OIL PUMP
GLP35LJ, GLP40LJ, GLP45MJ, GLP50MJ, GLP55MJ .................................................................................. 3.40
OIL SUMP AND PUMP
GDP35LJ, GDP40LJ, GDP45MJ, GDP50MJ, GDP55MJ ............................................................................... 2.24
OPERATOR MODULE ....................................................................................................................................... 1.16
OUTER MAST
THREE STAGE FULL FREE-LIFT .................................................................................................................. 11.2
TWO STAGE LIMITED FREE-LIFT................................................................................................................. 10.2
OUTER MAST AND MAIN LIFT
TWO STAGE FULL FREE-LIFT ...................................................................................................................... 12.2
OVERHEAD GUARD.......................................................................................................................................... 1.14
P
PARK BRAKE ..................................................................................................................................................... 7.16
POWERTRAIN MOUNT ....................................................................................................................................... 8.4
R
REAR DRIVE LIGHTS
SINGLE
WITHOUT CAB ......................................................................................................................................... 13.30
REAR SCREEN
vi
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Yale (C813) GDP35-55LJ, GDP35-55MJ, GLP35-55LJ, GLP35-55MJ Forklift Service Parts Catalogue Manual
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Description
This Service Parts Manual is an indispensable resource designed for the maintenance and repair of Yale (C813) GDP35-55LJ, GDP35-55MJ, GLP35-55LJ, and GLP35-55MJ Forklifts. Crafted for the discerning DIY repair enthusiast, this manual offers detailed technical data and diagrams alongside a complete inventory of parts.
- General Truck
- Diesel Engine (1004.42)
- LPG Engine (4.3L)
- Fuel System
- Electrical System
- Steering System
- Brake System
- Transmission
- Hydraulic System
- Mast-Two Stage Limited Free-Lift
- Mast-Three Stage Full Free-Lift
- Mast-Two Stage Full Free-Lift
- Options
- Numerical Index
This manual is designed to be used on both Windows and Mac platforms and is presented in English. It is an invaluable tool for those who prefer hands-on repair and maintenance, offering easy-to-follow instructions that cater to all skill levels.