Komatsu F30791, Shop Manual

Page: 185 / 298

HOW TO READ THE MANUAL
1. Removal and Installation of the groups
(1) The procedures and information needed to carry out the work of removing or Installing units or groups are
given in the removal procedure. The sequence of operations is not repeated in the installation procedure.
(2) Information needed for installation is marked with the symbol . The same symbol is repeated at the
end of each removal procedure for the same item, to indicate to which installation item it refers.
(Example)
REMOVAL GROUP :
*** : . . . . . . . . . . . . . . . . . . . . . . . . Title of operation
:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety precautions to be followed when carrying
out the operation.
1 - Remove XXXX (1):. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Step in removalprocedure.
H : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technique or important point to remember when re-
moving XXXX (1)
2 - ~ ~ ~ (2): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . This sign means that information is given for
the installation procedure
3 - Remove &&&& (3):
...........
,
: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Recovery of oilor water, and the quantity to be re-
covered.
INSTALLATION GROUP *** :. . . . . . . . . . . . . . . . . . . . . Title of operation.
.
To install, reverse removal procedure.
: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technique to be used for installation.
H : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technique or important point to remember when re-
moving ~ ~ ~ (2).
. Addition of water or oil: . . . . . . . . . . . . . . . . . . . . . . Step in removalprocedure.
H : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Point to remember when adding water or oil.
2. To the precautions to be taken during the removal or installation of the groups, must be added the specific
«PRECAUTIONS TO BE TAKEN DURING THE OPERATIONS».
Always make sure that these precautions are taken.
3. List of special tools.
(1) For details of the descriptions, codes and quantities of each tool ( A1 ; A2 etc.) mentioned in the operational
procedures, see the list «SPECIAL TOOLS» supplied in this section.
4. List of the tightening torques and weights, and the quantities oil, liquids or grease needed to fill
tanks and containers
(1) In the operating procedures, you will find the symbols , , , . In the following order, these
represent the values of «TIGHTENING TORQUES», «WEIGHT OF PARTS OR GROUPS», «QUANTITIES
OF OIL OR LIQUIDS TO BE INTRODUCED», «SCREW LOCKING MATERIAL, SEALANTS AND LUBRICA-
TION», «LUBRICATING GREASE».
NOTE
If no symbol is indicated, the values to be used are those given in the introductory sections of this manual.
30-3
REMOVAL AND INSTALLATION HOW TO READ THE MANUAL
PC20R-8 PC27R-8