TM 5-6115-400-35
Before compressing the plunger spring,
(16) Remove the pump from the vise and
check that assembly marks on the plunger
remove the protection caps from the
yoke and control sleeve are in alinement.
delivery valve holders. The pump is now
This determined, press down on the lever
ready for timing and calibration.
until the tappet retaining pin hole in the
(17) The timing spacers (49, fig. 15) will be
tappet is exposed and temporarily insert
assembled to the pump during the timing
the tappet retaining pin.
operation when the pump is on the test
(9)
Position center bearing (79, fig. 15) on
stand. The method following is used to
camshaft and carefully install the
insert the timing spacer. Use Service
camshaft in the housing. Make certain
Tool TSE 76159 to compress plunger
that the notched end of the camshaft is
spring. Hold the compressing tool so the
located at the same side of the pump as it
lever and adjustable prongs are on top.
did before disassembly. The firing order
The lower prongs are inserted between
will be changed if the camshaft is not
the lower spring seat and tappet knob.
installed properly in this respect. Replace
The adjustable prongs are placed
center bearing screws with two gaskets
between the delivery valve holder and
(83) and tighten firmly.
pump. The lever is press downward to
(10)
Install both end plates (73 and 27) and
compress the spring. With the plunger
secure with screws and lockwashers.
spring compressed, rotate the camshaft
until tappet assembly is positioned to
(11)
Replace woodruff key and install flywheel,
allow access to the tappet knob. Use
secure with lockwasher and hexagon nut.
narrow bladed screw drivers to pry the
(12)
Check the end (longitudinal) play of the
tappet knob sufficiently to insert timing
camshaft by measuring the distances
spacer. Reset the tappet knob on the
between the end plate and the coupling
spacer. Remove the special compressing
face. Use dial indicator clamped to pump
tool.
housing with indicator on end of camshaft.
f. Internal Timing of the Fuel Injection Pump.
The end play must measure between -
0.004 inches and 0.008 inches.
To
(1) Remove the delivery valve holder (64, fig.
measure the distance it will be necessary
to tap (and hold) the camshaft in each
located above the plunger and barrel
direction. Should the end play be found in
nearest the pump drive end.
Then,
excess of these permissible limits, correct
remove the valve from the delivery valve
this condition by inserting or removing a
body (63). Do not remove the valve
sufficient number of spacing washers (76)
body. Reinstall the delivery valve holder,
between the ball bearing and the end
after which it becomes possible to insert a
plate. Whenever adding or removing
depth gage or dial indicator through the
spacers, divide the amount between both
delivery valve holder and delivery valve
ends of the camshaft if possible.
body to contact the top of the plunger
(13)
Remove pump from vise and invert.
(56).
(14)
Rotate the camshaft and as each tappet
(2) Rotate the camshaft in anti-clockwise
rises sufficiently, remove the tappet
rotation until the plunger is at the top of its
retaining pin (fig. 17).
stroke and record the measurement with
the depth gage or dial indicator.
(15)
Replace the base plugs with new gaskets
(85, fig. 15) and secure firmly.
43
