A. INDIVIDUAL FUEL INJECTOR PUMP, REMOVAL AND INSTALLATION.
Figure 3-26. Fuel injection pumps, removal, disassembly, reassembly, and installation
(2) Inspect the housing for cracks, breaks,
2M5217 adapter group at the 10MM location. Set test
and warpage. Repair breaks and cracks by welding a-d
fixture rack at 0.000 inches to properly mount pump.
grinding smooth, if practical, or replace a defective
Use the 8M6530 rack setting gage and check for a full
housing.
rack movement of +0.312 inches in either direction.
(3) Inspect the drive gear for worn, cracked,
Reset test fixture to +0.100 inches. The number of
or chipped teeth Replace a defective drive gear.
discharge strokes required is 140, then check volume of
(4) Inspect the fuel rack for cracks, wear,
fuel in collector tube of test fixture using the 8MM
nicks, burs, and chipped teeth. Smooth nicks or burs
graduations. If the fuel level is in poor area of collector
that might cause fuel rack to bind. Replace a defective
tube, replace the fuel injector pump.
fuel rack.
(7) Inspect plump plunger for wear or
(5) Inspect rack bearings for scoring or wear.
damage. Replace a defective plunger. The length of a
Replace scored or defective bearings. The bore of a
new plunger must range between 2.5931 and 2.6937
new bearing must measure between 0.5007 and 0.5013
inches. Replace a fuel pump when plunger length is
inches. The specified bearing clearance is from 0.002 to
worn in excess of 0.004 inch.
0.003 inches.
Replace a bearing when clearance
(8) Inspect camshaft for scoring or wear.
exceeds 0.003 inch.
Replace a scored, worn, or defective camshaft.
(6) Inspect the barrel and plunger assembly
(9) Inspect camshaft bearings for scoring or
for damage. Replace a defective assembly. (Parts are
wear. Replace scored or damaged bearings. The bore
matched, not to be replaced individually.) Test for proper
of new bearings must measure between
operation by mounting pumps on a test fixture using the
AGO 20051A
3-35
