Electric Brakes With Parking Brake Feature - JLG Triple-L 248 Operation & Safety And Service Manual

SECTION 4 - SERVICE AND MAINTENANCE
Brake Controller - A tow vehicle brake controller is
required. These controllers have gain control to vary the
amount of current to the brakes, and a level control which
sets the controller's inertia sensor to sense deceleration.
The level adjustment also can be used to vary when the
trailer braking is felt. The gain or output control adjust-
ment usually controls the maximum amount of amperage
available to the brakes. This can be adjusted for varying
trailer loads.
1
2 3
23
22
21
1. Pivot Pin Locknut
2. Washer
3. Parking Brake Lever
4. Anchor Post Locknut
5. Anchor Post and Bushing Sub-Assembly
6. Backing Plate
7. Actuating Lever Arm Assembly
8. Brake Shoe
9. Retractor Spring
10. Actuating Cam
11. Pivot Pin and Cam Assembly
12. Adjusting Screw Spring
4-8
5 6
4
18
20
19
Figure 4-5. Electric Brakes with Parking Brake Feature
– Triple-L-Trailer –
The electric brakes that operate in conjunction with the
tow vehicle brakes must be "synchronized" so that brak-
ing is properly distributed to the tow vehicle brakes and
the trailer brakes. For proper operation and synchroniza-
tion, read and follow the axle/brake and the brake control-
ler manufacturers' instructions.
.
7
8
16
17
15
8
14
13. Adjuster Assembly
14. Shoe Hold Down Spring and Cup
15. Magnet Clip
16. Magnet
17. Magnet Spring
18. Wire Clip
19. Brake Mounting Clip
20. Lochwasher
21. Shoe Hold Down Pin
22. Adjuster Slot Plug
23. Wire Grommet
9
10
11
13
12
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