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Test 1
– Pull belt out of inertia reel with firm jerk.
•
Will not lock - renew seat belt complete with buckle.
•
If difficulties are experienced when belt is extended or retrac‐
ted, first check whether position of inertia reel has been al‐
tered.
•
The second locking function is triggered by a change in vehicle
speed (vehicle-dependent locking function).
Test 2
WARNING
For safety reasons, the road test should be carried out on a
traffic-free stretch to ensure that other road users are not en‐
dangered.
– Put on seat belt.
– Accelerate vehicle to 20 km/h and then carry out emergency
braking with foot brake.
•
If seat belt is not locked by locking mechanism during braking
procedure, renew seat belt complete with buckle.
1.19
Visually checking belt buckle
– Inspect belt buckle for cracks and chips.
•
If damage is determined, renew seat belt complete with belt
buckle.
1.20
Check operation of belt buckle
Checking belt buckle
– Push buckle tongue into belt buckle until it engages audibly.
Check whether locking mechanism is properly engaged by
pulling firmly on belt webbing.
•
If buckle tongue fails even once to engage properly in belt
buckle during at least 5 tests, renew seat belt complete with
belt buckle.
Checking release mechanism
– Release seat belt by pressing button on belt buckle with finger
pressure. When belt is slack, latch plate must spring out of belt
buckle on its own.
•
Carry out test at least 5 times. If buckle tongue fails even once
to spring out of buckle, renew seat belt complete with belt
buckle.
WARNING
Under no circumstances whatsoever may lubricant be used to
eliminate noise or stiffness in belt buckle buttons.
1.21
Checking belt relays, and buckle
tongues
Plastic-coated fittings show fine, parallel scoring after stress on
belt system (when belt was fastened during accident). (On the
General body repairs, interior - Edition 03.2020
Transporter 2016 ➤
1. Safety information
13
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