wsm Kubota U15 Instruction manual

WORKSHOP MANUAL
KUBOTA EXCAVATOR
U15
Code No.97899-61282
Service Chapter
U15-3

CONTENTS
VElectrical system
IV Hydraulic System
III Engine
II Machine Body
IGeneral

WSM U15, U15-3 Service
I-S-1
I. General
A.Body and engine identification marks . . . . . . . . . . . . . I-S-3
B.
Safety precautions for servicing, disassembly and reassembly . . I-S-4
a. Safety measures before starting work. . . . . . . . . . . . . . . . . . . I-S-4
b. Safety measures during work . . . . . . . . . . . . . . . . . . . . . . . . . I-S-4
c. Preparation for disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-5
d. Precautions for disassembly and reassembly. . . . . . . . . . . . . I-S-5
C. Important Safety process and critical functional process . . I-S-6
a. Essential Adhesives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-6
b. Important Safety Process .. . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-6
c. Important Critical Functional Process . . . . . . . . . . . . . . . . . . I-S-6
D.Important inspection items after reassembling . . . . . . I-S-6
a. Operate the Machine and check for Unusual Noise and Vibrations . . . . I-S-6
b.
Make Sure the Safety decals and Wireharness Clamps are in their
Specified Positions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-6
c.
With the Machine Front in a Specified Posture, Check the Amount of
Hydrauric Oil
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-6
d. Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-7
E.Maintenance intervals . . . . . . . . . . . . . . . . . . . . . . . . I-S-12
a. EU version. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-12
b. PP (KTC, KCL)-version. . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-15
b-1. KTA-version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-16-1
c. Hydraulic Oil Check for machines with Hydraulic Breakers . I-S-16-2
d. Maintenance items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-17
e. Troubleshooting for operators. . . . . . . . . . . . . . . . . . . . . . . . I-S-19
f. Periodic replacement of important component parts. . . . . . . I-S-20
g. Recommend oils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-21
h. Lifting capacity : U15-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-22
F.Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-23
a. Machine Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-23
b. Main Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-23
c. Lever stroke and operating force . . . . . . . . . . . . . . . . . . . . . I-S-24
d. Dimensions of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-25
e. Quality specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-34
Note : PP - version = Pan Pacific - version = KTC, KCL, KTA - version

WSM U15, U15-3 Service
I-S-3
A.Body and engine identification marks
(1) Machine serial number
(2) Engine serial number
e.g. D782 5L0023
“5” indicates year of 2005 and “L” indicates June.
So, 5L indicates that the engine was manufactured
in June 2005.
Model Serial No.
Excavator
Engine
Dealer's name
(To be filled in through the owner)
If trouble should occur during use, or if servicing is
necessary, contact the dealer who handles the
machine. At that time please inform the machine
model and engine type and serial numbers.
Name plate : Code No. RA018-57721
EU - version
U15-3
Machine model
Serial No.
Engine No.
PRODUCT IDENTIFICATION No.
>JKUU0153*00S40001<
40001
4
3
2
1
1
No. Items Contents ; Example
2
3
4
RA018-5772
PRODUCT
IDENTIFICATION
NUMBER
ENGINE No.
SERIAL No.
MODEL
2-47, Shikitsuhigasi 1-Chome, Naniwa-ku, Osaka, 556-8601 JAPAN
Example : S/N 40001
(1) Serial No.
(1) Engine serial No.

WSM U15, U15-3 Service
I-S-4
B.Safety precautions for servicing, disassembly and reassembly
Safety precautions for servicing
Most accidents during servicing arise from carelessness. Please remember that Safety involves both the
welfare of the employees and improved work efficiency.
Safety precautions for Disassembly and reassembly
Machines must be diassembled and assembled efficiently and safely.
It is very important to thoroughly understand the construction and function of the machine, to make all appro-
priate preparations, and start operations according to the specified working procedures.
a. Safety measures before starting work
(1)Work clothes
1. Wear specified work cap and clothed.
(Under no circumstances may workers wear
undershirts only.)
Cuffs must be kept buttoned, and any tears
must be mended.)
2. Wear safety shoes.
3. Do not wear cotton gloves when working on
the internal section of engine, reduction
gears or hydrauricunits for repair or others,
or when using a hammer. Wear leather
gloves, however, when hoisting wires.
(2)Inspecting equipment and tools
1. Prepare equipment (cranes, fork lifts, tool,
etc.) required for servicing and inspect for
any problems before starting work.
2. Hammer heads (metal parts) must be firmly
secured to their handles.
3. Check hosting tools (wire ropes, hoisting
chains, etc.) before use.
(3)Keep workshop in order
1. Secure appropriate space needed for disas-
sembly to the job.
2. Secure a clean, safe place for arranging dis-
assembled parts.
3. Store volatile substances (gasoline, light oil,
thinner, oily articles, etc.) in appropriate con-
tainers at selected locations to prevent fire
hazards.
b. Safety measures during work
(1)Protectors
1. Wear goggles when using chisels for chip-
ping.
2. Use appropriate protectors during welding.
3. Wear a helmet when working with a crane or
at elevated locations.
(2)Team work
1. When working with two or more people,
divide the work and maintain close commu-
nication.
2. Clane work must be carried out using prede-
termined signals.
(3)Disassembly and assembly
1. Do not wear gloves when using hammers.
2. Use rods of the specified soft material for
removing pins. Do not use a hammer as a
pad.
3. Do not place fingers in holes when center-
ing.
4. Heavy parts must be adequately supported
before removingbolts.
(4)Cranes
1. In principle, use a crane for objects heavier
than 44lb (20kg).
2. Crane operation and hoisting must be per-
formed only by qualified personal.
3. Pay careful attention to the center of gravity
when hoisting, and do not stand under the
lifted objects.
(5)Others
1. To work under a jacked-up carrier, be sure to
place wood pieces under it.
2. When charging batteris, make sure there
are no open flames in the immediate vicinity.
3. All electric tools must be grounded.
4. Before welding the machine, remove the
battery.
• When removing the battery, be sure to dis-
connect negative (-) cord first.
• When mounting the battery, be sure tp
connect the positive (+) cord first.