TM 5-3805-258-24-2
ENGINE
FUEL INJECTION
DISASSEMBLE FUEL INJECTION
PUMPS
1251-15
start by:
a) remove fuel injection pumps
CAUTION
Be careful when the injection pumps are disas-
sembled. Do not damage the surfaces of the
plungers, barrels and bonnets. Any scratches
will cause leakage inside the fuel injection
pump. The plunger and barrel for each pump
are made as a set. Do not put the plunger of one
pump in the barrel of another pump. If one part
has wear, install a complete new pump assem-
bly. Be careful when the plunger is put into the
bore of the barrel.
1.
2.
Pull plunger (1) and washer (5) out of barrel (3)
and spring (2).
Remove washer (5) from plunger (l).
CAUTION
Do not remove the gear from the plunger. The
gear and plunger are assembled and adjusted
at the factory.
3.
4.
5.
Remove spring (2) from barrel (3).
Remove ring (6) and make a separation of barrel
(3) and bonnet (4).
Remove check assembly (7) and spring (8) from
bonnet (4). If check assembly (7) is disassem-
bled, do not mix parts with parts from another
check assembly.
ASSEMBLE FUEL INJECTION
PUMPS
1251-16
CAUTION
Put clean fuel oil on all parts during assembly.
1.
2.
3.
4.
5.
Install spring (2) and check assembly (1) in bon-
net (3).
Install bonnet (3) on barrel (4) and install ring (5)
to hold them together. Do not slide bonnet (3)
across barrel (4) because check assembly (1) in
the bonnet can cause damage to the face of barrel
(4).
Install spring (8) on barrel (4).
Install washer (7) on plunger (6) with the flat side
toward the gear on the plunger.
Install plunger (6) in barrel (4) until washer (7) is
engaged in the spring.
end by:
a) install fuel injection pumps
5-78
DISASSEMBLY AND ASSEMBLY
PUMPS
