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TM 10-3930-671-24
INJECTION PUMP
SERVICE AND ASSEMBLY SPECIFICATIONS
Model Number: DB2429-4179
NOTE
THIS SPECIFICATION DEVELOPED WITH ISO LONG INLET STUD. ALL SPEEDS ARE IN ENGINE RPM UNLESS
OTHERWISE NOTE D. USE LATEST REVISION FOR ALL REFERENCED DOCUMENTS.
WOT= WIDE OPEN THROTTLE
H. I. = HIGH IDLE
L.I . = LOW IDLE
PUMP CALIBRATION CHECKS:
PUMP SETTINGS: (CONT’D.)
AS RECEIVED FOR SERVICE:
1.
1000 RPM (WOT): OPERATE PUMP FOR 10
MINUTES TO BRING TO OPERATING
TEMPERATURE AND CLEAR AIR FROM
SYSTEM.
2.
3150 RPM (H.I.): RESET HIGH IDLE SCREW
TO OBTAIN 17-20 mm3/STROKE, IF NECESSARY.
3.
CHECK POINTS:
INITL
RPM
POS.
mm3/STROKE ADVAN
a
150
WOT
31 MIN ---
b
400
WOT*
4 MAX ---
c
650
L.I.**
8-11
---
d
1400
WOT
---
00-10
e
2000
WOT
45-51
20-40
f
3000
WOT
45-49
50-60
g
3000
WOT*
4 MAX. ---
h
3150
WOT
17-20
---
I.
3200
WOT
5 MAX. ---
*ELECTRONIC SHUTOFF DE-ENERGIZED
**RESET USING LOW IDLE SCREW, IF
NECESSARY
PUMP SETTINGS:
(FOLLOWING PUMP SERVICE):
1.
ROLLER TO ROLLER DIMENSION:
1.976” + .001” (50.19 + .025 mm)
MAXIMUM ECCENTRICITY:
.004” (0.1 mm) T.I.R.
2.
GOV. LINKAGE GAP:
.125” TO .165” (3.2 - 4.2 mm)
(USE KIT #23093 8.8.95).
3.
1000 RPM (WOT): OPERATE PUMP FOR 10
MINUTES TO BRING TO OPERATING
TEMPERATURE AND CLEAR AIR FROM
SYSTEM
4.
400 RPM (WOT):
a.
CHECK SHUTOFF 4 mm3/STROKE, MAX
b.
CHECK FOR MINIMUM TRANSFER PUMP
LIFT OF 18” HG. (60 kPa).
5.
3000 RPM (WOT):
a.
SET TRANSFER PUMP PRESSURE FOR
95-100 PSI (65590 kPa).
b.
ADJUST RETURN OIL TO 225-475 CC/MIN
RECHECK TRANSFER PUMP PRESSURE
c.
CHECK HOUSING PRESSURE FOR 4-8.5
PSI, (28-59 kPa).
6.
2000 RPM (WOT): SETADVANCE TRIMMER
SCREW FOR 3.0°.
7.
3000 RPM (WOT): SET ROERTOROLLER
FUEL DELIVERY: 46.5-47.5 mm's/STROKE.
8.
SET TORQUE SCREW SO AS NOT TO
IMPEDE METERING VALVE MOVEMENT
UNLESS NEEDING RESET FOR HIGH
ALTITUDE APPLICATIONS PER CUSTOMER
REQUIREMENTS.
9.
3150 RPM (WOT): ADJUST HIGH IDLE-
SCREW TO OBTAIN 17-20 mm3/STROKE.
10. 650 RPM (L.I.): SET LOW IDLE TO OBTAIN
8-11 mm3/STROKE.
11. CHECK POINTS:
INITL
T.P.
RPM
POS.
mm3/STROKE
ADVANCE PRESS.
150
WOT
33 MIN.
--
10 MIN.**
400
WOT'
4 MAX
-
---
650
L .I
8-11
-
---
1400
WOT
---
0°-1°
---
2000
WOT
46-50
2.5°-3.50
---
3000
WOT
46.5-47.5
5°60
95-100**
3000
WOT
4 MAX
---
---
3150
WOT
17-20
---
---
3200
WOT
5 MAX
---
---
*ELECTRONIC SHUTOFF DE-ENERGIZED
** (69 kPa) *** (655 690 kPa)
12. SPECIAL NOTES:
a.
TORQUE ALL FASTENERS.
b.
RESET HIGH IDLE SCREW TO OBTAIN
17-20 mm/'STROKE AT THE HIGH IDLE
SPEED CORRESPONDING TO THE FULL
LOAD RPM STAMPED ON THE NAME
PLATE.
FULL LOAD HIGH IDLE GOV. CUT-OFF
2800
2975
3025
2600
2800
2850
c.
SAFETY WIRE ALL FASTENERS.
d.
CHECK ELECTRIC SHUTOFF (PARA XX).
F-251
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