Kalmar DCE80-100E, Техническое руководство

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DCE80-100E
Technical Handbook
Drive axle Kessler
Description
12 P. Group 40
TDCE01
04GB
Parking brake
The parking brake is a disc brake that acts on the drive axle’s in-
put shaft and is applied by means of a powerful spring in a spring
brake cylinder. The brake is released by a hydraulic pressure of
at least 10 MPA from the parking brake valve in the driver’s cab.
When the hydraulic pressure is too low, the parking brake is ap-
plied automatically. To be able to move the truck in that situation,
the parking brake must be released by mechanical means, see
below.
When the parking brake is applied, the parking brake valve evac-
uates hydraulic pressure from the brake cylinder. The cup spring
then expands and its force is transmitted through the piston (6) to
the adjusting screw (7) and then on to the thrust shaft (8), which
in turn transmits the braking force to the brake linings. The posi-
tion of the adjusting screw (7) determines the location of the
spring’s working range in relation to the brake linings.
Adjustment
1. Apply a pressure to the brake cylinder by putting the parking
brake valve in the ‘OFF’ position.
2. Unscrew the lid 12.
3. Loosen the lock nut 11 and screw in the adjusting screw 7
clockwise until the brake pads are close up to the brake disc.
4. Unscrew the adjusting screw 7 counter-clockwise until the
space between the pads and the disc is approx. 1 mm. Note
that the spring in the brake cylinder has a very small working
space.
5. Fix the adusting screw with a hexagonal socket head wrench
and lock the lock-nut 11.
6. Fasten the lid 12 by hand.
Releasing the parking brake by mechanical means
If the acumulator pressure drops below a certain level, the park-
ing brake is applied automatically.
If the truck needs to be moved:
1. Unscrew the lid 12.
2. Loosen the lock-nut 11 and unscrew the adjusting screw 7
counter-clockwise until the brake pads have loosened from
the brake disc.
3. Fasten the lid 12 by hand.
Dismantling of the parking brake cylinder
Normally, there is no need of dismantling the parking brake cylin-
der. However, if for some reason it needs dismantling, follow the
instructions below:
1. Unscrew the lid 12.
2. Loosen the lock-nut 11 and unscrew the adjusting screw 7
counter-clockwise until the brake pads have loosened from
the brake disc.
3. Remove the lock ring 13, thereafter the integral parts can be
removed.
1 4 3 8 10 6
7 11
9
2
5
1. Housing
2. Bolt
3. Brake lining
4. Brake lining
5. Plate spring package
6. Piston
7. Adjusting screw
8. Thrust shaft
9. Ring
10. Space for hydraulic oil on relea-
sing the parking brake
11. Lock-nut
12. Lid
13. Lock ring
13
12
WARNING!
The parking brake contains a powerful,
plate spring package under heavy tension.
If the cylinder is dismantled in an unproper
way, parts may become loose and fly out
thus causing serious damage.
DANGER TO LIFE!
Always check that the spring package
tension is released before dismantling the
brake cylinder, see Dismantling of the
brake cylinder.
WARNING!
Chock the wheels on sloping ground.
WARNING!
If the parking brake has been mechanically disengaged it
must always be reset in order to restore the
parking brake function.