Isuzu N-Series. Manual - part 207
SERVICE INFORMATION 00-45
the work, first turn the engine off, wait 30 minutes,
and verify that the temperature has cooled off.
4. Even when a long time passes after the engine is
turned off, the high-pressure hydraulic oil in the ac-
cumulator of the hydro boost remains stored under
pressure.
Before removing the hydro boost assembly or pip-
ing, be sure to repeatedly press the brake pedal at
least ten times with the engine off, and make sure
the pressure of the hydraulic oil in the accumulator
has been reduced to atmospheric pressure before
doing the work.
In particular, when removing the replacement-part
accumulator from the hydro boost assembly, the
hydraulic oil may spatter if it remains stored under
high pressure inside the accumulator, so be careful
of this.
Parking Brake
Parking Brake Adjustment
Before beginning to adjust the parking brake, park the
vehicle on a level surface, chock all of the wheels, and
place the parking brake lever in the released (off) posi-
tion.
Then loosen the parking brake control wire lock nut (1),
and turn the adjuster (2) to completely loosen the park-
ing brake control wire.
Parking Brake Lining Clearance Adjustment
1. Jack up the rear axle until the wheels can be turned
freely.
2. Remove one of the two check hole covers from the
parking brake drum.
3. Rotate the brake drum to align the check hole with
the adjusting screw.
4. Move the camshaft lever from side to side several
times to center the brake shoes.
5. Insert a screwdriver into the check hole and rotate
the adjusting screw by pushing it upward.
Continue doing this until the brake shoes begin to
drag on the drum.
N5A0020E
N5A0024E
N5A0021E