TM-9-2815-225-34-P
ENGINE, DIESEL: 6 CYLINDER IN-LINE TURBOCHARGED, CUMMINS MODEL NTC-400
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JULY 2005
TM-9-2815-225-34-P - Page 336 of 736
TM 9-2815-225-34&P
0039 00
0039 00-2
FUEL PUMP MAIN HOUSING (Contd)
DISASSEMBLY
1.
Remove two drive screws (19) from throttle shaft cover (18).
2.
Remove retaining ring (33) from throttle shaft (22). Discard retaining ring (33).
3.
Remove throttle shaft (22) and O-ring (23) from housing (9). Discard O-ring (23).
4.
Remove throttle shaft ball (17) from throttle shaft (22). Discard throttle shaft ball (17).
5.
Remove fuel adjusting screw (20) and O-ring (16) from throttle shaft (22). Discard O-ring (16).
6.
Remove setscrew (15) and throttle shaft (22) from stop (21).
7.
Loosen nut (14) from Air Fuel Control (AFC) needle valve (12).
8.
Remove AFC needle valve (12) and O-ring (13) from housing (9). Discard O-ring (13).
9.
Remove nut (14) from AFC needle valve (12).
10.
Remove threaded stud (11) secured with jamnut (10) from housing (9).
11.
Remove jamnut (10) securing tapered stud (31) from housing (9).
12.
Remove filter screen cap (5), cap seal ring (6), filter spring (7), and fuel filter screen (8) from
housing (9). Discard cap seal ring (6).
13.
Remove check valve (39) from fuel control cover (40).
14.
Remove two screws (38), drilled head screw (37), and three washers (36) from fuel control cover (40).
15.
Move bellows (45) away from sealing surface on housing (9) and remove with attached parts.
16.
Remove spring (58), AFC shim (57), and retaining ring (56) from housing (9). Discard retaining
ring (56).
NOTE
Heat governor housing in oven to 300° F (149° C) to prevent
damage to housing bore during barrel removal.
17.
Using AFC barrel puller, remove barrel (52), and three O-rings (53), (54), and (55) from
housing (9). Discard O-rings (53), (54), and (55).
18.
Remove barrel spring (51) from housing (9).
NOTE
Earlier pump models did not require a barrel spring.
19.
Remove jamnut (41) from throttle plunger (50).
20.
Remove throttle plunger (50) and O-ring (49) from air fuel control piston insert (42). Discard
O-ring (49).
21.
Remove nut (48) securing air fuel control piston insert (42) and remove piston spacer (47), AFC
piston (46), bellows (45), retainer washer (44), and gasket washer (41) from air fuel control piston
insert (42). Discard gasket washer (43) and bellows (45).
22.
Remove governor plunger (30), three shims (29), and torque spring (28) from housing (9).
23.
Remove torque spring (28) and three shims (29) from governor plunger (30).
24.
Remove five pipe plugs (1) and (4) and roll pin (24) from housing (9).
25.
Remove spring pack (27) and governor barrel (26) from housing (9).
26.
Remove tachometer drive bushing (32), two AFC plug balls (34), and two dowels (25) and (35) from
housing (9).
27.
Remove two screws (3) and nameplate (2) from housing (9).
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