Technical
Publications
Lexington, KY 40510
www.Clarkmhc.com
SM-781
HWX/PWX
Service Manual
PWX
HWX
September 2007
CONTENTS
SM 781, May '07
CONTENTS -1
Contents by Group
Contents are listed here by Group number :
PS
PERIODIC SERVICE
12
BATTERY
14
WIRING
16
ELECTRIC MOTORS
17
CONTACTORS
19
MOTOR CONTROLS
20
DRIVE UNIT
23
BRAKE SYSTEM
25
CASTER ASSEMBLY
28
HYDRAULIC SYSTEM
34
LIFT CYLINDERS
35
LIFT LINKAGE and LOAD WHEELS
39
SHEET METAL
40
SPECIFICATIONS
Copyright Clark Material Handling 2007
SM781, May ’07
Truck Models Covered by this Manual
This manual consists of “base” module that pertains
to all HWX/PWX models and other modules that
pertain only to specific models. Manuals shipped
with the truck contain the base module and the mod-
ules specific to the purchased truck.
You may, however, purchase specific modules and
expand your manual to fully cover multiple models.
To do so, order the desired modules as you would
any other Clark part.
Arrangement and Use of this Manual
Clark arranges parts and service procedures by stan-
dardized Groups. In this manual, Groups are similar
to “chapters”. Groups are listed in the indexes on the
next page.
Each Group begins with a table of contents that
shows the Sections contained within the Group.
Lengthy Sections also begin with a table of contents.
Each Group and Section has an identifying name and
number, or “ID”.
Each page also has a unique ID. The page ID con-
sists of three numbers separated by hyphens. The
three numbers represent the Group number, the Sec-
tion number, and the page number. For example,
“00-1-2” on the lower corner of the page indicates
Group 00, Section 1, page 2.
The Group number sometimes has a letter or letters
added to it in parentheses if one or more variations of
the Group exist. For example, if the truck has a stan-
dard transaxle, Group 06 is expressed as “06(S)”; if
the truck has a hydrostatic transmission, Group 06 is
expressed as “06(H)”.
You can quickly locate a specific point in the manual
by using the headers and footers that