URAL Motorcycles 750cc Series, Repair Manual

Page: 18 / 99

T
r
ouble
Cause
Symptoms and diagnosing
Remedy
Brakes overheat
1.
No play in foot brake
pedal or front
brake lever
, resulting
in brake shoes
being
constantly pressed to drum
2.
Brake cam pin seized
3.
Brake cam seized due to lar
ge turn
angle, caused by worn linings of brake shoes
1.
Set up motorcycle on the
stand,
check rotation of wheels
without
depressing pedal and
lever
2.
Cam is stuck in position which
corresponds to braking ac
t
ion
and
fails
to return into initial
position
3.
Cam
stuck in position cor
-
responding to maximum separa
t ion of
sh
oes and fails to return
1.
Set up motorcycle on
the stand.
T
urn
wing nut of
brake pull
rod counter
clock
wise until rear wheel revol
v
es
freely
. By
turning in ad
justing
screw on brake drum
cover of front wheel ob
tain
free rotation of
wheel. After
adjusting, check brake
performance 2.
Lubricate cam. If troub
l e persists, take
wheel of
f,
remove brake cam, wash or
reface it, if necessary 3.
Using adjusting bolts r
e-a
djust clearance
of brake shoes
Electrical Equipment
W
ith ignition lock
key turned in first
R. H. position, pilot lamp fails to light up W
ith ignition lock
key turned in first
R. H. position, pilot lamp glows, but there
is no sound when horn button is
depressed
1.
Kill
switch "Of
f"
2. Lamp is blown 3. No contact on term
inals of pilot
lamp socket 4. Safety fuse of ignition system is blown 5.
No contact:
a)on battery terminals b) on terminals of ground c) on battery terminal c) on
alternator
d) on terminals "2" and
"3"
of master
switch " e) on
positive
and
ground terminals
of voltage
regulator
f) on "ground" terminal of
engine
g) on safety fuse terminals
of ignition
system 1.
No contact:
a) on terminal of horn wire
lug
b) on terminal o
f wires in plug
-and
-
socket connector c) on terminal in light
knob contact
d) on "ground" thro
u
gh
switch body
and handlebar 2.
Break in wires of some
circuit link
from horn to
lighting switch
1. Check, if "ground" is "On" 2. Check condition of bulb 4.
Check, if safety fuse is intact
5.
Check, if contacts are cle
a
n and
tightened. Check, if wir
i ng is intact,
especially wire lugs at contact terminals of safety
fuse block and
ignition lock Check that contacts are clean
and
tightened. Check that wir
ing
is intact,
especially
, wire lug at contact
terminals of distributor
breaker and
light turn
-knob
1. Switch on "ground" 2. Change faulty bulb 3. Restore contact 4.
Change faulty fuse
5.
If necessary
, clea
n
con
tact surfaces of
wire lugs, restore condition of wiring, tighten up the terminals by means of screws and nuts If ne
cessary
, clean contact
surfaces of wire
lug, recondition
wiring, tighten up te
rminals
18