Hitachi ZAXIS 70 - Page 201

MAINTENANCE
7-47
Bleed Air from Fuel System
IMPORTANT: Air in the fuel system may make the en-
gine hard to start or make it run irregu-
larly. After draining water and sediment
from the water separator, replacing the
fuel filter, cleaning the feed pump
strainer or running the fuel tank dry, be
sure to bleed the air from the fuel sys-
tem.
Bleeding Procedure
1. Check that upper plug (3) and drain plug (4) on water
separator (2) are securely tightened.
2. Loosen air bleeding plug (5) on the fuel filter. Con-
tinue to move feed pump (6) up and down until the
fuel containing no air bubbles flows out.
NOTE: Don’t loosen upper plug (3) on water separator
(2). If loosened, air will not be bled.
3. Tighten air bleeding plug (5) on the fuel filter. Move
feed pump (6) up and down until it becomes difficult
to move. Tighten feed pump (6).
4. Start the engine. Check the fuel system for any fuel
leaks.
Bleeding Procedure (Automatic Bleeding Device
--- If Equipped)
1. Turn the key switch to the ON position and wait for
approximately 1 minute.
2. Start the engine. Check the fuel system for oil leaks.
M1CD-01-017
M1CG-01-017
M1CD-01-009
MCG-07-020
4
3
2
5
6
ZAXIS70, 70LC, 80SB, 80SBLC, 80LCK
5
ZAXIS70, 70LC, 80SB, 80SBLC, 80LCK
3
4
2
ZAXIS85US
6
ZAXIS85US