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Page Title:
CALIBRATION CHART |
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 TM 9-2320-269-34-1
FUEL INJECTION PUMP - CONTINUED
CALIBRATION CHART
Supply pressure
3 - 5 psi (21 - 35 kPa)
Transfer pump pressure
28 psi (193 kPa) minimum at 1500 rpm
2300 75 psi (15858 517 kPa)
Test nozzle opening pressure
Pump rotation (viewed from drive end)
Clockwise
Firing order
1-8-7-3-6-5-4-2
32 degrees 1 degree BTDC
Initial timing
Number one piston on compression stroke -
crankshaft
Damper timing mark and pointer indexed
Minimum engine speed (LO-idle)
600 - 650 rpm (no load)
Maximum engine speed (HI-idle)
3200 - 3350 rpm
Injection pump number
498496-C91
Check
RPM
Specifications
1. Prestroke Setting
O
0.0787 in. (2.00 mm) Lift to port closure of
#1 plunger at 0.4212 inch (10.7 mm) rack
position
45 degrees .5 degrees between cylinders
2. Pump Camshaft Phasing
-
1-8-7-3-6-5-4-2
3. Preliminary Governor Cutoff;
Rack Position (Accelerator
Lever in Full Forward Posi-
tion with Hi-Idle Stop Screw
Removed)
a)
1500-
No change in rack position between 1500 and
1600
1600 rpm (record)
b)
1600-
Governor cutoff (rack position change) should
1800
occur between 1600 and 1800 rpm (record)
4. Governor Cutoff; Rack Posi-
1500-
No change in rack position (record)
tion (Accelerator Lever in
1550
Full Forward Position with
Hi-idle Stop Screw Installed)
5. Hi-Idle Rack Position
1635
0.3346 inch (8.5 mm) maximum
6. Maximum Fuel Setting
a) Rack Position (Ref)
1500
0.4213 inch (10.7 mm)
b) Delivery (Avg) cu inch/
1500
472 - 378 inch (66 - 63 mm)
stroke (cu mm/stroke
2-309
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