CQ 20/25/30 D/L
RATED CAPACITY: 2000 – 3000kg
Book No. SM 794
Truck Models Covered by this Manual
This manual consists of “base” module that pertains
to all CQ20-30 models and other modules that per-
tain only to specific models. Manuals shipped with
the truck contain the base module and the modules
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
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 appear on every
Section page. The following illustration points out
This manual is intended for the use of trained service
personnel. Please read Group SA, “Safe Mainte-
nance”, and the Operator’s Manual before working
on or operating the truck.
Group PS. Periodic Service
Group 00. Engines
Group 01. Cooling System
Group 02. Fuel System
Group 03. Air Induction System
Group 06. Transaxl