Tab 3-13 Fuel pump
Location
code
Key Item Measured di-
rection
Nominal di-
mension (usu-
al, new) [mm]
Maximum
clearance di-
mension (be-
cause of wear)
[mm]
5556 Fuel pump
Plunger (diameters 40 mm, 42 mm
and 44 mm)
001 Clearance (plunger / cylinder) A-B Radial 0.035 to 0.038 0.045
Clearance (plunger / cylinder) B-C Radial 0.025 to 0.028 0.035
*Clearance (plunger / cylinder) D Radial 0.040 to 0.043 0.5
Clearance Radial 0.15 to 0.266 0.4
005 Plunger/bottom spring carrier Axial 0.10 to 0.17 0.20
006 Regulating sleeve/top spring carri-
er
Axial 0.5 to 0.7 0.8
5556 Roller guide
003 Pin Outer diameter
80
0
-0.013
Guide piston (bore) Inner diameter
80
+0.04
+0.01
Clearance Radial 0.010 to 0.053 0.08
004 Total clearance between the guide
piston and the roller with pressure
discs
Axial 0.26 to 0.54 0.7
NOTE: The plunger is machined in the range C to D, thus there is an increase of 0.015 mm in
diameter.
X72DF
AA00-0000-00AAA-034C-A
Maintenance Manual Clearances
Winterthur Gas & Diesel Ltd.
- 79 - Issue 002 2020-10
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