Brake Adjustment; Brake Cleaning & Inspection - Kärcher TRAILER 3500E HDS 4.7/35 Operator's Manual

What to Check and How to Check

Brake Adjustment

Brakes should be adjusted (1) after the first 200 miles
of operation after the brake shoes and drums have
"seated", (2) at 3000 mile intervals and (3) as use and
performance require. The brakes should be adjusted in
the following manner:
1. Jack up trailer and secure on adequate capacity
jack stands. Check that wheel and drum rotate
freely.
2. Remove adjusting hole cover from adjusting slot on
bottom of brake backing plate.
3. With screwdriver or standard adjusting tool, rotate
the starwheel of the adjuster assembly to expand
the brake shoes. Adjust the brake shoes out until
the pressure of the linings against the drum makes
the wheel very difficult to turn.
NOTE: With drop spindle axles, a modified adjusting
tool with about an 80 degree angle should be used.
4. Then rotate starwheel in opposite direction until
wheel turns freely with slight lining drag.
5. Replace the adjusting hole cover and lower wheel
to ground.
6. Repeat above procedure on all brakes.
Never crawl under your trailer unless it is resting
on properly placed jack stands.
Ne jamais se glisser sous la remorque à moins
qu'elle ne repose correctement en place sur des
chandelles.
Do not lift or place supports on any part of the
suspension system.
18 Karcher Trailer 3500E HDS 4.7/35 Operator's Manual 9.808-363.0 - B
Brake Cleaning & Inspection
Your trailer brakes must be inspected and serviced at
yearly intervals or more often as use and performance
require. Magnets and shoes must be changed when
they become worn or scored thereby preventing inade-
quate vehicle braking.
Clean the backing plate, magnet arm, magnet and
brake shoes. Make certain that all the parts removed
are replaced in the same brake and drum assembly.
Inspect the magnet arm for any loose or worn parts.
Check shoe return springs, hold down springs and
adjuster springs for stretch or deformation and replace
if required.
Asbestos Dust Hazard. Since some brake shoe
friction materials contain asbestos, certain
precautions need to be taken when servicing
brakes:
Risque lié à la poussière d'amiante. Étant donné
que les matériaux de friction de certains segments
de frein contiennent de l'amiante, certaines
mesures de précaution doivent être prises au
moment de procéder à des opérations d'entretien
des freins.
1. Avoid creating or breathing dust.
2. Avoid machining, filing or grinding the brake
linings.
3. Do not use compressed air or dry brushing for
cleaning. (Dust can be removed with a damp
brush).