MAINTENANCE
7-79
Change Coolant
--- twice a year (in spring and autumn)
NOTE: Before leaving the Hitachi Factory, the cooling
system is filled with a mixture of water and
Genuine Hitachi Long-Life Coolant.
As long as Genuine Hitachi Long-Life Coolant is
used, the service intervals between changing
the coolant is once every two years, or every
4000 hours, whichever comes first.
CAUTION: Do not loosen the radiator cap until
the engine is cool. Loosen the radiator cap slowly
to the stop. Release all pressure before removing
the radiator cap.
1. Park the machine on a solid and level surface. Lower
the bucket to the ground. Stop the engine.
2. Remove plugs (3) and open drain cocks (2). Slowly
open cock (2) to bleed air pressure. After the air pres-
sure is released, open engine drain plug (4).
3. Close drain cock (2) and install plug
(4). Open bleed
air cocks (6). Remove radiator cap(1). Fill the radiator
with soft water which contains less impurities or tap
water and a radiator cleaner agent. Start the engine
and run at a speed slightly higher than slow idle; when
the needle of the temperature gauge reaches the
white zone, run the engine for about ten more min-
utes.
4. Stop the engine and open radiator drain cock (2) and
remove plugs (4). Flush out the cooling system with
soft water or tap water, until the draining water is clear.
This helps remove rust and sediment.
5. Close radiator drain cocks (2) and (5) install plugs (3)
and (4). Fill the radiator with soft water or tap water. At
that time, mix the antifreeze (or LLC) or anti-rust
agent. Slowly add coolant to avoid mixing air bubbles
in the coolant system. Close bleed air cocks (6).
6. Start the engine. Sufficiently bleed air from the cooling
system.
7. After adding coolant, operate the engine for several
minutes. Check the coolant level again.
Add coolant if necessary.
M18C-01-009
M18C-07-037
M18C-07-067
M18C-07-070
2
5
1
3
4
6
Содержание EX1900-5
Страница 1: ......
Страница 37: ...SAFETY SIGNS S 29 SS 411 SS 691 SS 442 M18C 01 006 SS 445 M144 07 107 ...
Страница 38: ...SAFETY SIGNS S 30 SS 446 SS 723 SS3076117 SS 723 SS 410 SS 723 Loading Shovel ...
Страница 39: ...SAFETY SIGNS S 31 SS3091476 M146 01 035 ...
Страница 40: ...SAFETY SIGNS S 32 SS 413 M18C 01 007 M18C 01 008 ...
Страница 42: ...SAFETY SIGNS S 34 MEMO ...
Страница 112: ...DRIVING THE MACHINE 4 12 MEMO ...
Страница 140: ...MAINTENANCE 7 8 MEMO ...
Страница 146: ...MAINTENANCE 7 14 Hoses Q ty in Use Transmission Oil Cooler Hose 5 2 M18C 07 062 5 ...
Страница 156: ...MAINTENANCE 7 24 4 Grouped Grease Fittings 7 Arm Ñ Lubrication M144 07 079 M144 07 005 7 ...
Страница 158: ...MAINTENANCE 7 26 Grease Fittings for Bucket and Link Pins Auto lubrication system equipped M18C 07 072 VIEW B VIEW A ...
Страница 258: ...MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS 9 2 MEMO ...
Страница 274: ...TROUBLESHOOTING 11 14 MEMO ...
Страница 278: ...SPECIFICATIONS 12 4 MEMO ...