FUEL PUMP - CONTINUED
25. Gear pump
Drive gear and shaft
(3) and spur gear
and idler shaft (4)
New gasket (6) and
gear pump cover (1)
Lubricate gear pump housing, drive gear
and shaft, and driven gear and shaft with
Clean prussian blue from gear pump
housing end of driven gear and shaft,
and position driven gear and shaft into
gear pump housing.
Position drive gear and shaft into gear
Using thickness gage, check gear back-
lash as shown.
Backlash must not exceed 0.004 inch
Install red, 0.002-inch (0.51 mm), or
purple, 0.0015-inch (0.38 mm), new
gasket as determined in step 24.
Position gear pump cover on gear pump
housing (5), making sure dowels and
dowel holes are alined, and press
Check that pump turns freely by finger