Kubota U27-4 User manual

Daily
KUBOTA Corporation 2018
* This lubricant is filled while manufacturing the engine.
RECOMMENDED LUBRICANTS
Filled at the factoryRecommendation
Note
TypeViscosity Quality
standard Brand
Ambient
temperature
conditions
15W-40*
NLGI-2*
Shell Rimula R4L*All-weather
In winter and/or at
low temperatures
SAE 10W
SAE 20W
API CF*
API CI-4*
API CJ-4*
Engine oil
In winter and/or at
low temperatures When diesel fuel with a high sulphur content (between
0.50% and 1.00%) is used, the engine oil and engine oil
filter must be replaced at shorter intervals.
Never use diesel fuel with a sulphur content exceeding
1.00%.
SAE 30
SAE 40
SAE 50
In summer and/or
at high ambient
temperatures
80W-90* Shell Spirax MA80W*All-weather
SAE 75
SAE 80
MIL-L-2105C*Gear oil
In winter and/or at
low temperatures
SAE 90
SAE 140
In summer and/or
at high ambient
temperatures
ROWE
Hightec
Antifreeze AN
(-37 °C)*
G048*
SAE J1034*
MB 325.0*
ASTM D3306*
D4985
Coolant
Always use distilled water to mix with antifreeze. Always
follow the recommendations of the coolant manufacturer
for the mixing ratio. Do not mix with other coolants.
EN 590
ASTM D975
Diesel
Hydraulic
oil
The fuel filled at the factory is not winter diesel. For
preparing the excavator for use in winter, fill the fuel tank
with winter diesel and allow the engine to run for a few
minutes.
Never use diesel fuel with a sulphur content exceeding
1.00%.
HFC R134a Refrigerant
Mobil Mobilux EP2*
DIN 51825
KP2K-30*
Grease
NLGI-1 WEICON Antiseize
Standard
Only use during the first 50 working hours (on all greasing
points around the swing block).
ISO 32
ISO 46* Shell Tellus S2M46*
In summer and/or
at high ambient
temperatures
ISO 46
ISO 68
U27-4 EXCAVATOR (NA VERSION)
5
6
6
6
2
6
6
8
6 9
3
1
74
Item Note CapacityNo.
Coolant Check the coolant level in the recovery tank and replenish water if needed.
Radiator:
Canopy 2.4 L (0.63 U.S.gals)
Cabin 2.6 L (0.69 U.S.gals)
Recovery tank:
0.6 L (0.16 U.S.gals)
1
Fuel Check the fuel level and replenish if needed. 33 L (8.7 U.S.gals)
2
Engine oil Check the engine oil level and replenish if needed. 3.6 L (0.95 U.S.gals)
3
Hydraulic oil Check the oil level in the oil level gauge and refill the oil if necessary.
Tank: 22 L (5.8 U.S.gals)
Whole oil system:
37.5 L (9.9 U.S.gals)
4
Steel
Rubber
Track adjustment
10 to 15 mm
0.39 to 0.59 in.
75 to 80 mm
3.0 to 3.2 in.
Check track tension 50 hours after initial use and readjust if necessary.
(A) (A)
(A)
(1)Drive Sprocket (3)Idler
(1) (2) (3)
Rubber Crawler Steel Crawler
(2)Track Roller
Machine position when checking oil level.
●: First operation
Washer liquid (only CABIN type) Check the washer liquid level and replenish if needed.
5
Lubrication Points Replenish grease to the grease nipple by a grease gun.
6
Radiator and oil cooler
Clean the fins with compressed air (or steam).
Check the rubber hoses for damage and replace if cracked or old.
Check if the hose clamps are tight enough.
7
Engine and electrical wiring Check if flammable substances are on the muffler or the engine.
Check disconnections, shorts or loose terminals.
8
Fan belt tension Press the fan belt down in the middle, with a force of approx. 7 kg (15.41 lbs).
The belt tension is correct if it deflects about 7 mm (0.28 in.).
9
DAILY CHECK
SERVICE HOUR METER
Boom
Arm
Bucket
Swing
Blade
: Half-extended state
: Vertical to the ground
: Parallel to the ground
: Central
: Down to the ground
When the hour meter has counted up to the hours mentioned in the maintenance list below,
the right indicator will appear on the instrument panel.
No. Check items Tasks 50
Hours of operation indicator Maintenance
intervals
100 250 500 750 1000 2000
Replace
Replace
○ ○ Every 500 hrsEngine oilC:_01
○Every 1000 hrsHydraulic oil
Outer element
Inner element
C:_02
○Every 1000 hrs
Air cleaner
elements
C:_03
○Every 1000 hrs
○ ○ Every 500 hrsFuel filter cartridgeC:_04
○ ○ Every 500 hrsEngine oil filterC:_05
○● ○ Every 500 hrsDrive motor gear oilC:_06
○ ○ Every 500 hrsHydraulic oil return filterC:_07
○
○
○
○
○
○
○
○
○
○Every 1000 hrsHydraulic oil suction filterC:_08
C:_09
○Every 2000 hrsTrack roller oil, front idler oilC:_10
Maintenance indicator:
Printed in Japan 2018. 03, H, EI, EI, engusa Code No. RY913-26130
KiSC issued 03, 2018 A

Initial
11
2
13 10 4
9
57
2
OFF
ON
8
6
3
12
U27-4 EXCAVATOR (NA VERSION)
1,14
18
23
28
27
29
30
16
17
20
19
1522 21
24
U27-4 EXCAVATOR (NA VERSION)
Item Contents Interval NoteNo.
Drive unit oil Change Initial 50 hrs
1Initial oil change.
Fuel tank, water separator Drain
2Drain water from the tank and water separator.
Battery condition Check 50 hrs
3Check the battery conditions with the indicator.
Greasing swing bearing teeth Grease
4Replenish grease to the grease nipple by a grease gun.
Fan belt tension Adjust
200 hrs
5Press the fan belt down in the middle, with a force of approx. 7 kg (15.41 lbs).
The belt tension is correct if it deflects about 7 mm (0.28 in.).
Radiator hoses and clamps Check
6This check should be done every 200 hours or every 6 months, whichever comes
first.
Fuel line and Intake air line Check
7Clean the outer element. Do not remove the inner-element.
Air filter element (outer element)
(*1) Clean
8The element should be cleaned more frequently if the machine is used in extremely
dusty areas.
Greasing swing ball bearing Grease
9Replenish grease to the grease nipple by a grease gun.
Lubrication of the pilot valve Grease 250 hrs
10 Grease the tip of the push rod and the rotating part of the link.
Engine oil Change
500 hrs
11 Regardless of the service hours, an engine oil change is due every 1 year.
Engine oil filter cartridge Replace
12 Always check the oil level when replacing the filter.
Fuel filter cartridge Replace
13 The fuel system must be purged of air after the replacement.
Drive unit oil Change
14 Change drive unit oil every 500 hrs or at least once a year.
Breather filter Replace
15 Always check the oil level when replacing the filter.
Hydraulic return filter element (*2) Replace
16
Hydraulic pilot filter element Replace
1000 hrs
17 O-ring can’t be reused.
Hydraulic oil (*2) Change
18 Before these maintenance, stop the machine on flat ground and lower the bucket
to the ground.
Hydraulic suction filter element Replace
19
Air filter element (inner and
outer element) Replace 1000 hrs or
once a year
20 Shorten the replacement period if the machine is used in dusty or sandy areas.
Fuel injection nozzle Check 1500 hrs
21 Consult your local KUBOTA dealer for this service.
Front idler and track roller oil Change
2000 hrs
22 Contact your KUBOTA dealer for details.
Alternator and starter motor Check
23
Injection pump Check 3000 hrs
24 Consult your local KUBOTA dealer for this service.
Electrical wiring and fuses Check
Every year
25 Check the terminals for proper connections.
Electrical circuit Check
26 Check the electrical circuitry for disconnections, shorts or loose terminals.
Radiator hoses and hose clamps Replace
Every 2 years
27 Replace radiator hoses and hose clamps every two years.
Radiator coolant Change
28 In case of long life coolant.
Fuel hoses and hose clamps Replace
29 Replace the hoses and clamps.
Intake air line Replace
30 Replace the hoses and clamps, if necessary.
Normal excavator work
Hammer work portion
20%
40%
60%
More than 80%
(*2) When using a hydraulic breaker, the interval of changing hydraulic oil becomes short as follow.
(*1) Clean and replace the air filter more frequently if used under dusty conditions. When the filter is very dirty from dusty conditions,
replace the filter.
Hydraulic oil
Every 1000 hrs
Every 800 hrs
Every 400 hrs
Every 300 hrs
Every 200 hrs
Every 500 hrs
(250 hrs after first operation)
Every 200 hrs
Every 100 hrs
Hydraulic return filter element
REGULAR MAINTENANCE
KiSC issued 03, 2018 A