© Feb. 2023
80 TB20J Plus Maintenance Manual
POWER SYSTEM
1. Air crossover tube
2. Rocker arm housing cover
3. Fuel injector
4. Fuel injector return pipe
5. High-pressure fuel rail
6. Water inlet connection
7. Coolant temperature sensor
8. Crankcase breather pipe
9. Crankcase breather
10.Water outlet connection
11. Coolant temperature sensor
12.Engine oil filling port
Fuel System
Check the Fuel Level
The fuel level can be checked from the energized
ground controller display or platform controller display.
Fig 32 Fuel level (ground controller)
Fig 33 Fuel level (platform controller)
Fill the Fuel Tank
Turn off the engine, fill with correct diesel fuel according
to the Oil Requirements , and never overfill the tank.
• Do not mix gasoline, alcohol, or their mixture
with diesel fuel.
• Do not refuel the machine while the engine is
running.
• Due to the extremely accurate tolerance match
of the diesel injection system, it is critical to
keep the fuel clean and free of dirt or water.
The dirt or water entering the combustion sys-
tem can cause severe damage to the fuel pump
and injectors.
Replace the Fuel Filter Element
NOTICE
• Do not pre-fill the fuel filter on the pressure side.
Pre-filling the pressure-side fuel filter can cause
debris to enter the fuel system and damage fuel
system components.
• After installing the fuel filter, the fuel system must
be filled.
• Tightening the filter too tightly can cause thread
distortion, or bring damage to the filter element
gasket or filter tank.
It is recommended to replace the fuel filter element
every 6 months or after 500 hours of operation.
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