NOTE: When sleeve is installed on pump plunger, the
narrower of the two lands on the sleeve must be toward
top of pump (nearest the pump spring).
Clean the barrel and plunger of calibration
pump (1). Put clean diesel fuel on the
calibration pump fox lubrication.
NOTE: Be sure that the spring on calibration pump (1) is
the 5P6557 Spring instead of the 1 P7377 Spring which
was installed on earlier calibration pumps.
INSTALLING CALIBRATION PUMP
1. 3P1540 Calibration Pump.
Put calibration pump (1) in the place of the
pump to be checked with the flat place (20)
on the plunger toward tang (17) on lever
(18). When the calibration pump (1) is all
the way in the bore, turn it 180° in either
clockwise or counterclockwise direction.
Tang (17) on lever (18) is now in groove
(19) of calibration pump (1). Then install
4N218 Bushing (2) use the 8S2243 Wrench
and a torque to tighten the bushing to 60 +
5 lb. ft. (80 + 7 Nm).
NOTE: Turning calibration pump (1) 1800 gives
the same reference point for all measurements.
CALIBRATION PUMP INSTALLED
1. 3P1540Calibration Pump. 17. Tang on lever. 18.
Lever. 19. Groove of calibration pump. 20. Flat on
NOTE: Use 4N218 Bushing (2) and calibration pump (1)
together. The contact surfaces of the standard bushing,
fuel injection pump and the housing for the fuel injection
pumps are sealing surfaces. Keep them clean and free
of scratches, to prevent leaks.
PUTTING DIAL INDICATOR ON ZERO
3. Microgage. 4. 3P1568 Dial Indicator with 3P2226
Collet. 21. Lockscrew. 22. Locknut. 23.3P2226
10. Put dial indicator (4) on microgage (3) and
hold them together tightly. Loosen
lockscrew (21) and turn the face of dial
indicator (4) to put the pointer at "0".
Tighten lockscrew (21).
Remove dial indicator (4) from microgage (3). Look at
the face of dial indicator (4) and put dial indicator (4) on
microgage (3) again. The pointer must move through
one to one and one half revolutions before stopping at
exactly "0". If the number of revolutions is not correct,
loosen the locknut on 3P2226 Collet (23), and adjust the
position of the dial indicator until the adjustment is
correct do Step 11.