Design of the borescope -VAS 6748A-
♦ Transport case
♦ Control panel
Allows for capturing colour images and videos.
2 GB SD card
Procedure for identifying noises using the borescope
The borescope shows the interior of various components and can be used to search for additional indications leading to the cause of a noise at hidden locations and without the need to remove components.
Examples:
Check vent flaps, fans and push rods on bulkheads.
Check bearings for metal particles and proper condition.
ChecklistProtocol for locating noisesVehicle data: (fill in
together with vehicle user)Item no.: Brand: Production date: Date:
Status: Partner: Engine type: Mileage: Retrofitted components:Gearbox
type: Service technician: Has the vehicle been checked?
Can the customer complaint be confirmed? YES
YES_
_ NO
NO_
_When did the noise begin to occur?
Increased gradually
Area affected by the modification or accident:_____km
_ It has always existed
Since an accident_
_Shortly
Since a modification_
_Potential damage: (related observations)Black smoke
Battery charge
Vibrations
Warning lamp on
Oil leakage_
_
_
_
_Power loss
Play in steering
Jerking
Excessive force for steering
Suspension bouncing_
_
_
_
_Gearbox fault
Coolant leakage
Bad starting behaviour
Fuel leakage_
_
_
_
Noise localisation in vehicle:
Noise level:dB__________High_Medium_Low_Pitch of noise
High_Medium_Low_Duration of noise: Long_Short_Continuous_How often does
noise occur: Intermittent or periodic_Occasionally_Types of noises
according to designations:Flapping
Whining
Oscillating
Rattling
Clattering_
_
_
_
_Explosion
Howling
Knocking
Chirping
Humming_
_
_
_
_Crunching
Droning
Grinding
Grunting
Whistling_
_
_
_
_Uncommon
Boom Boom
Bubbling
Buzzing
Jingling
_
_
_
_Puffing
Groaning
Squeaking
Whipping
Knock Knock_
_
_
_
_Screeching
Cracking
Clacking
Sizzling
Creaking_
_
_
_
_Mooing
Whooshing
Crackling
Scratching
Scraping_
_
_
_
_Siren
Rattle
Bells
Chattering
Whirring_
_
_
_
_Murmuring
Click Clack
Clip Clip
Clucking
Tuning fork_
_
_
_
_Pop Pop
Whistle
Lisping
Tap Tap
Ticking_
_
_
_
_Nuance of the noiseResonance (echo)_Metallic sound_Plastic sound_Under which circumstances does the noise occur?Always
Engine off
Idling
At full acceleration_
_
_
_Often
With ignition switched off
Engine on
When decelerating_
_
_
_Rarely
With ignition switched off
When accelerating slowly
With vehicle stationary_
_
_
_Very rarely
At engine start-up
When accelerating moderately
When driving_
_
_
_When braking
When steering
When going downhill
With air conditioning system switched on_
_
_
_When disengaging clutch
Under load
When going uphill
At air recirculation mode in vehicle interior_
_
_
_When engaging the clutch
Without load
In right-hand bends
With heater switched on_
_
_
_When changing gears
When driving through potholes
In left-hand bends
With auxiliary heater switched on_
_
_
_With
interior blower set to low stage_With interior blower set to medium
stage _With interior blower set to highest stage _Other circumstances
_Which? _____________________________________________________________In
which gear:Manual gearbox
Automatic gearbox_
_1st
P_
_2nd
N_
_3rd
D_
_4th
R_
_5._6._R_Vehicle
speed range: 0 25 50 75 100 125 150 175 200 225 250 km/hEngine speed
range: 0 1000 2000 3000 4000 5000 6000 7000Engine condition: Cold_Medium
warm_Warm_Weather: Rainy_Dry_Windy_Hot_Ice or snow_Ambient temperature:
-20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50Condition of road
surface:Smooth_Rough_With potholes_No tarmac_Bumpy_ On which seat the
noise can be perceived as the most intense? Front right
Rear left_
_Front left
Same on all seats_
_Rear right_Can the source of the noise be localised?Right front area
Right front door
Left rear door
Bumper_
_
_
_Left front area
Right rear area
Right rear door
Roof_
_
_
_Front centre area
Left rear area
Rear lid
Solar roof_
_
_
_Left front door
Rear centre area
Mirror
Body_
_
_
_Vehicle interior
Engine
Differential
Air conditioner compressor_
_
_
_Seats
Power train
Intake connecting pipe
Exhaust system_
_
_
_Interior trims
Gearbox
Turbocharger
Wheel_
_
_
_Dash panel
Clutch
Coolant pump
Alternator_
_
_
_Fuel pump
Pulley_
_Fuel filter
Bearing_
_Underbody
Belt_
_Suspension
Other…_
_Which?______________________________________________________________________Remarks: → Remark
1) Always consider loose objects in the glove compartment, the storage compartments in the doors and the luggage compartment including jack, vehicle tool kit and spare wheel.