660-R OPERATING INSTRUCTIONS
Page
12
TEST DESCRIPTION
Use the following section as a prompt list when performing MOT tests. The
next sections gives a more detailed description and should be studied by
new users before any attempt is made to follow this simple prompt list.
MOT Brake Test Procedure for Class IV
Enter the car details onto the PC (if connected) or press WGHT key to
enter car weight
If the vehicle braking system is fitted with a servo, ensure the engine is
running at idle throughout the test (use exhaust extraction or adequate
ventilation).
RESET
the system by pressing
2 nd
and then
STOP,
DDsp shows CL4
Front Axle
Drive the front axle into the rollers.
CENTRE THE WHEELS: Press
START
key to start both roller sets, DDsp
shows both rotating icons then Ctr. Move steering wheel to centre
wheels and press STOP when alignment is correct
FRONT LEFT BRAKE:
Press
START
key to start only the left roller set.
DDsp shows left rotating icon then A1.L Apply footbrake smoothly
until the wheel stops or produces its maximum brake effort , then
press
STOP.
(This start, test, stop action can be repeated if necessary)
Once acceptable reading has been obtained press
OK
to store the result.
FRONT RIGHT BRAKE: Press
START
key to start only the right roller set.
DDsp shows right rotating icon then A1.R Apply footbrake smoothly
until the wheel stops or produces its maximum brake effort , then
press
STOP.
(This start, test, stop action can be repeated if necessary)
Once an acceptable reading has been obtained press
OK
to store.
BIND, OVALITY and IMBALANCE TEST
Press
START
key to start both
roller sets. Do not apply any brake force. DDsp shows both rotating
icons then Fr.b for a few seconds. It will then show either the bind
value or symbol “--” if bind is below 20kgf.
Apply a brake force of about 100 kgf and hold pedal steady
Press
OVAL
key to measure the ovality, DDsp shows
to
, wait
6 second approx.
