Repairing components
Group 23
122
Group 23 Fuel System
Fuel pump
Fuel supply pressure, checking.
(23315)
IMPORTANT!
Clean the nipple and hose
thoroughly before connecting them to the fuel
system. The injewctors are sensitive and may
easily be damaged by contamination.
1.
Check the fuel pump and replace if necessary.
2.
Measure the supply pressure before (
1
) and after
(
2
) the fuel filter.
Use manometer 999 6398, nipple 999 6066 with a
long hollow screw (art. no. 180211) and new cop-
per washers (969011).
Supply pressure:
1) after pump:
............................
0.5 MPa / 5 bar
2) after filter:
at 1500 rpm ..........................
0.28 MPa / 2.8 bar
Special tools:
Nipple ............................................................................................................ 999 6066
Manometer .................................................................................................... 999 6398
Hollow screw ........................................................................................ art. no. 180211
Copper washer ...................................................................................... art. no. 969011
Alternatively:
Electrical pressure gauge .............................................................................. 999 8496
Hose .............................................................................................................. 999 8493
1
2
