Bleeding The Fuel System; Checking Fuels, Coolants, Lubricants, E Tc; Engine Oil Level Check - Mercedes-Benz 300 CD 1978 Owner's Manual

Fuel System
Bleeding th e Fuel System
A com pletely bled fuel system is
imperative fo r perfect engine oper­
ation. During operation, the system
is continuously bled via the over­
flo w line.
The entire system m ust be bled
w hen the car has been driven until
the fuel tank was com pletely
emptied.
58
C hecking Fuels C oolants
A fte r refueling, start the engine,
engaging the starter fo r about
20 seconds until all the trapped air
has been evacuated.
W ith a poorly charged battery the
system m ust be bled manually.
Operate the prim er pum p until the
injection pum p o verflow valve
opens (rattling noise audible).
Disengage prim er pum p handle
prior to operating it (turn counter­
clockwise). Retighten after use.
Engine Oil Level C heck
Check engine oil level at regular
intervals, e.g. after refueling, w ith
the engine at operating tem pera­
ture and shut off.
Lubricants etc.
1 Dipstick
2 Pour in engine oil
The vehicle should be parked on
level ground and the oil level m ust
be somewhere between the lower
and the upper mark on dipstick (1);
do n ot replenish in excess o f the
upper mark.
For viscosity and capacity, see
" Fuels, Coolants, Lubricants, etc.,
and last page".