Coolant; Fuel; Notes Regarding The Hydraulic System - Komatsu WB140-2N Operation & Maintenance Manual
Backhoe loader
Hide thumbs
Also See for WB140-2N:
- Shop manual (31 pages) ,
- Shop manual (41 pages) ,
- Operation & maintenance manual (31 pages)
Table of Contents
Advertisement
MAINTENANCE
COOLANT
•
Engine coolant serves to keep the engine at the correct temperature and therefore to ensure optimal operating conditions;
check coolant level in the expansion tank daily and top off if necessary.
•
The quantity of antifreeze to be added to the coolant depends on the minimum temperature in the place where the machine
is working.
Use the following table:
Minimum ambient temperature
Quantity of antifreeze
Quantity of water
•
Use water which has low mineral content.
•
Do not use corrosion inhibitors containing soluble oil, since they damage the rubber couplings.
•
In case of doubt, contact your Komatsu Dealer.
FUEL
•
Always use fuel suitable for the engine. Other fuels with different specifications may damage the engine or reduce its
power.
•
Always refuel at the end of the work day.
•
When refueling, make sure that there is no water on the fuel drum cover and take care not to draw condensation from the
drum bottom.
•
If fuel runs out, or if the fuel filter has been replaced, it is necessary to bleed the circuit.
NOTES REGARDING THE HYDRAULIC SYSTEM
•
Be extremely careful when performing maintenance on the hydraulic system, since the oil is very hot.
The system is pressurized not only during work, but also at the end of work.
•
The maintenance operations required for the hydraulic system are the following:
1.
Daily check the oil level in the tank.
2.
Periodically change the oil filter.
3.
Periodically change the oil and clean the suction filter.
•
Always bleed (purge) the system after changing the oil filter and the oil.
•
When a component is removed from the circuit, check the gaskets and o-rings and change them if they are damaged.
•
When a cylinder or a component of the hydraulic system is removed, after reassembly bleed the system by proceeding as
follows:
1.
Start the engine and let it idle.
2.
Make all the cylinders perform 4-5 movements, stopping them at approximately. 100 mm (4 in) from the end of their
stroke.
3.
Slowly make all the cylinders reach the end of their stroke for 3-4 times.
3-4
Quantity Of Antifreeze To Be Added To The Water
° C
-4
-6
° F
25
21
Liter
1.4
2.1
US gal
0.37
0.55
Liter
12.6
11.9
US gal
3.33
3.15
-9
-12
-16
15
10
3
2.8
3.5
4.2
0.74
0.92
1.11
1.29
11.2
10.5
9.8
2.96
2.78
2.59
2.41
-20
-26
-32
-36
-4
-15
-26
-33
4.9
5.6
6.3
7
1.48
1.66
1.85
9.1
8.4
7.7
7
2.22
2.04
1.85
WB140-2N, WB150-2N
Advertisement
Table of Contents
