Assembly Procedure
| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | 1U-7307 | Governor Repair Fixture (1) | 1 |
| B | 1U-7635 | Clevis Driver (1) | 1 |
| C | 1U-7606 | Servo Block (1) | 1 |
| D | 1U-7277 | Pin Punch | 1 |
| E | 1P-1857 | Retaining Ring Pliers | 1 |
| F | 1P-1855 | Retaining Ring Pliers | 1 |
| G | 1U-7309 | Shim Adjustment Tool (1) | 1 |
| H | 1U-7313 | Gauge Block (1) | 1 |
| I | 1U-7312 | Calibration Plate (1) | 1 |
| J | 1U-7314 | Weight (1) | 1 |
| K | 1U-7308 | Shim Adjustment Tool (1) | 1 |
| ( 1 ) | Part of the former 1U-9088 Tool Group |
| NOTICE |
|---|
Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
Note: Inspect all parts of the governor upon assembly. For information on the reusability of components in the governor, refer to the Guideline For Reusable Parts And Salvage Operations, SEBF8434, "3100 Governor Inspection and General Information for Mechanical Governor Groups Used in 3114, 3116, and 3126 Engines Equipped with Mechanical Unit Injectors (MUI)". For information on cleaning the components in the governor, refer to the The Cleaning Guide, SEBF8354, "Equipment And Chemical Recommendations Reference Manual".
Note: Refer to Chart A "Parts to be Replaced During Rebuild" in Guideline For Reusable Parts And Salvage Operations, SEBF8434 for a list of components that need to be replaced during a governor rebuild. It is not necessary to replace the components in Chart A "Parts to be Replaced During Rebuild" if the governor is in the shop for a bench test or for minor repair.
Note: Refer to Chart B "Parts Replacement Chart" in Guideline For Reusable Parts And Salvage Operations, SEBF8434 for a list of components that need to be replaced when the servo assembly is serviced.
Note: Put clean engine oil on all parts before assembly. Ensure that all of the oil passages in the governor are clean and free of obstructions.
- Install spring (104) and seal (106) onto piston assembly (105) .
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| Illustration 1 | g00615706 |
(100) Nut (101) O-ring seal (102) O-ring seal (103) Valve cavity (104) Spring (105) Piston assembly (106) Seal (107) Fitting (108) O-ring seal (109) Setscrew (110) O-ring seal (111) Nut (112) Cover | |
Note: Inspect all of the governor parts for wear or for damage. If any of the governor parts are worn or damaged, use new parts for replacement.
- Insert piston assembly (105) into the access hole. Thread the collar onto piston assembly (105) from the opposite side of the access hole. Thread the collar onto the piston assembly until the alignment pin contacts the housing. As the alignment pin makes contact with the housing, rotate the alignment pin until the alignment pin engages in the alignment slot.
- Insert a socket through the access hole and tighten piston assembly (105) until the piston assembly bottoms out.
- Install O-ring seal (108), fitting (107), nut (100) and setscrew (109) .
Note: Back out the setscrew for the adjusting procedure. Refer to the Testing and Adjusting, "Adjusting a New or Rebuilt Governor (Type VI)" topic in this manual for additional information.
- Install O-ring seals (101) and (102) and put the dual horsepower mechanism in position on the governor.
- Apply 9S-3263 Thread Lock Compound to three bolts (97) and install the bolts.
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| Illustration 2 | g00655999 |
(97) Bolt (98) Solenoid (99) Wire retaining clip | |
- Install solenoid (98) on the dual horsepower mechanism.
- Install wire retaining clip (99) .
- Install O-ring seal (110) and cover (112) for the setscrew.
- Install spring (96), spring seat (95), and retaining ring (94) onto fuel ratio control valve (89) .
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| Illustration 3 | g00606027 |
Note: Spring (96) is compressed in order to achieve a 50 N (11 lb) preload.
- Install return spring (93) onto fuel ratio control valve (89). Install the piston and seal (92) onto fuel ratio control valve (89). Install spring seat (91) and spring (90) onto fuel ratio control valve (89) .
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| Illustration 4 | g00606020 |
- Mount the drive end of the governor on the 1U-7307 Governor Repair Fixture (Tool (A) ).
- Put fuel ratio control valve (89) into position in the governor rear housing.
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| Illustration 5 | g00606015 |
- Install spring (88) and washer (87) into cover (84) .
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| Illustration 6 | g00606007 |
- Install diaphragm (85) and retainer (86) into cover (84) .
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| Illustration 7 | g00606004 |
- Put cover (84) in position and install three bolts (83) .
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| Illustration 8 | g00605986 |
- Install lever (82) onto the shaft for the fuel ratio control valve.
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| Illustration 9 | g00605850 |
- Put bracket (81) in position in the governor rear housing. Install two bolts (80) and tighten the bolts to a torque of 4 ± 1 N·m (35 ± 9 lb in).
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| Illustration 10 | g00605816 |
- Use the following procedure to assemble the later style of governor output servo assembly.
- Install servo valve (76) into servo piston (75) .
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Illustration 11 g00605368
Governor Output Servo (Later Style)
(73) Clevis
(74) Sleeve
(75) Servo piston
(76) Servo valve
(77) Spring pin
(78) O-ring seal
(79) Tolerance ring
Note: Thoroughly clean all parts before assembly.
- Install O-ring seal (78) onto sleeve (74) and slide the sleeve onto servo piston (75) .
- Install a new 109-4587 Tolerance Ring (79) into the large bore in the end of servo piston (75). Position the tolerance ring so the gap in the ring is aligned with the hole for spring pin (77). Push tolerance ring (79) into the bore until the tolerance ring bottoms out.
- Place Tool (C) in a vertical position. The small round hole should face upward. Put the servo valve in position on Tool (C). Install servo valve (76) in an upward position.
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Illustration 12 g00607006
(B) 1U-7635 Clevis Driver
(C) 1U-7606 Servo Block
(73) Clevis
(75) Servo Piston
- Put clevis (73) in position on servo piston (75). Use Tool (B) to press clevis (73) into servo piston (75) from the end with tolerance ring (79) .
- Position clevis (73) so that the hole for spring pin (77) is in alignment with the gap in the tolerance ring and the hole in servo piston (75). Press clevis (73) until the clevis bottoms out against servo piston (75) .
- Position Tool (C) on the side so the notch is facing upward. Position the governor output servo so the sleeve is in the recess of Tool (C). Insert clevis (73) into the servo piston in the recess that is marked "PIN". Rotate the governor output servo so that the hole for spring pin (77) is aligned with clevis (73). Use Tool (D) to press a new 6D-9953 Spring Pin (77) into the governor output servo until the end of the spring pin is flush with the outside diameter of the servo piston.
Note: Lubricate the bore of the governor rear housing lightly with clean engine oil before the governor output servo is installed.
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Illustration 13 g00523035
(C) 1U-7635 Clevis Driver
(D) 1U-7277 Pin Punch
(73) Clevis
- Use the following procedure to assemble the earlier style of governor output servo assembly.
- Thoroughly clean all of the parts of the governor output servo assembly.
- Install servo valve (76) into servo piston (75) .
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Illustration 14 g00605266
Governor Output Servo (Early Style)
(73) Clevis
(74) Sleeve
(75) Servo piston
(76) Servo valve
(77) Spring pin
(78) O-ring seal
Note: Thoroughly clean all parts before assembly.
- Install O-ring seal (78) onto sleeve (74) and slide the sleeve onto servo piston (75) .
- Position Tool (C) on the side so the notch is facing upward. Position the governor output servo so the sleeve is in the recess of Tool (C). Position the clevis end of the servo piston in the recess. The recess will be marked "PIN" on the side.
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Illustration 15 g00607223
(B) 1U-7635 Clevis Driver
(C) 1U-7606 Servo Block
(73) Clevis
(75) Servo piston
- Insert clevis (73) into the bore of the servo piston.
- Align the holes in clevis (73) and servo piston (75). Press a new 4H-1641 Spring Pin (77) until the end of the spring pin is flush with the outside diameter of servo piston (75) .
Note: Lubricate the bore of the governor rear housing lightly with clean engine oil before the governor output servo is installed.
- To install governor output servo (72) into the governor rear housing, push the small end of governor output servo (72) through the opening in the governor rear housing. As the governor output servo is installed, slide control sleeve (67), spring (68), and limit sleeve (69) onto governor output servo (72) .
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| Illustration 16 | g00605196 |
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| Illustration 17 | g00605187 |
- Press on clevis (73) until governor output servo (72) is seated in the bore of the governor rear housing. Use Tool (E) to install retaining ring (71) .
- Push limit sleeve (69) and control sleeve (67) toward the side of the governor housing that holds the clevis in order to compress spring (68). Install retaining ring (70) with Tool (E) when the spring is compressed.
Note: Some governor output servo assemblies may have a second retaining ring on the servo. Install the second retaining ring between the two sleeves.
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| Illustration 18 | g00604935 |
- Install fulcrum lever (65), spring (66), and spacer (64) onto pivot shaft (63). Install the fulcrum spring onto the end of pivot shaft (63) .
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| Illustration 19 | g00607426 |
- Install bearing block assembly (59) onto pivot shaft (63) .
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| Illustration 20 | g00607704 |
- Install riser lever (61) onto bearing block assembly (59) .
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| Illustration 21 | g00607765 |
- Install retaining ring (60) on the end of the pivot shaft with Tool (G). Use a feeler gauge to obtain a 0.15 ± 0.05 mm (0.006 ± 0.002 inch) clearance between bearing block (59) and riser lever (61). When the proper clearance is reached, tighten bolt (62) .
- Put bearing block assembly (59) in position in the governor rear housing. Install two bolts (57) and tighten the bolts to a torque of 4 ± 1 N·m (35 ± 9 lb in).
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| Illustration 22 | g00604635 |
| NOTICE |
|---|
Bearing block position affects rack output. If the bearing block assembly is positioned too closely to the riser shaft side, high idle may not be reached. If the bearing block assembly is positioned too far from the riser shaft side, fuel shutoff may not be obtained. |
- Install seal (58) onto the governor rear housing.
- Install screw (56) and jam nut (55) for the torque limiter.
Note: Steps 30 through 32 are for the installation of the torque limiter (if equipped).
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| Illustration 23 | g00604593 |
- Install O-ring seal (54) onto cover (53) for the torque limiter.
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| Illustration 24 | g00604456 |
- Install cover (53) onto the torque limiter.
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| Illustration 25 | g00604442 |
- Remove the governor rear housing from Tool (A). Remove the three legs from the governor repair fixture.
- Install the governor front housing on Tool (A) .
- Install lower O-ring seal (52) into the fuel transfer pump housing.
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| Illustration 26 | g00608009 |
- Install piston assembly (51) into sleeve assembly (49) .
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| Illustration 27 | g00577247 |
- Install sleeve assembly (49) and tappet (50) into the fuel transfer pump housing.
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| Illustration 28 | g00577242 |
- Install upper O-ring seal (47) and spring (48) into the fuel transfer pump housing.
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| Illustration 29 | g00577236 |
- Put cover assembly (46) in position on the governor housing and install bolts (45) .
Note: Make sure that cover assembly (46) is securely fastened to the governor housing. Fuel may leak around the O-ring seal if cover assembly (46) is not tight. Make sure that the fuel inlet fitting is tight in cover assembly (46) in order to ensure that no leaks occur.
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| Illustration 30 | g00577234 |
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Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force. |
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- Install a new throttle shaft seal (44) if the old throttle shaft seal was removed.
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| Illustration 31 | g00577219 |
- Install throttle shaft (40) into the governor housing.
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| Illustration 32 | g00577217 |
- Install retaining ring (41), control lever (42), and setscrew (43) .
- Install return spring (38) for the throttle lever and install spring spacer (39) on the throttle shaft.
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| Illustration 33 | g00577216 |
- Install retaining ring (37) in the original location. Ensure that the retaining ring is seated properly in the groove in the end of the lever shaft.
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| Illustration 34 | g00577214 |
- Install blade (34) and blade (36). Tighten the bolts that hold the levers in position to a torque of 2 ± 0.2 N·m (18 ± 2 lb in).
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| Illustration 35 | g00522821 |
- Put fuel shutoff mechanism (33) in position. Install two bolts (32) that secure the fuel shutoff mechanism to the governor housing.
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| Illustration 36 | g00522819 |
- Install flyweight carrier (28) onto riser shaft (30) .
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| Illustration 37 | g00522582 |
- Install pin (31) into riser shaft (30), as shown.
- Install flyweight carrier (28) and riser shaft (30). Ensure that the pin on riser shaft (30) is seated properly in the groove of the gear carrier.
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| Illustration 38 | g00522581 |
- Install eight new carrier bolts (29). Hold flyweight carrier (28) in order to keep the flyweight carrier from rotating. Tighten eight carrier bolts (29) to a torque of 10 ± 1 N·m (90 ± 9 lb in).
Note: Do not reuse eight carrier bolts (29). Replace the used carrier bolts with new carrier bolts.
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| Illustration 39 | g00522577 |
- Install flyweight (25) onto flyweight toe (27) .
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| Illustration 40 | g00522576 |
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| Illustration 41 | g00522574 |
- Install flyweight pin (26) through the bore in flyweight (25) and flyweight toe (27) .
- Install flyweights (25) in the original location.
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| Illustration 42 | g00522537 |
- Install four washers and bolts (24). Tighten bolts (24) to a torque of 2.2 ± 0.2 N·m (19 ± 2 lb in).
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| Illustration 43 | g00522536 |
- Install shims (22), two races (21), and bearing (23) onto riser (19). Do not install retaining ring (20) at this time. Use the procedure that follows to determine the correct number of shims (22) to use on riser (19) .
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| Illustration 44 | g00522535 |
- Put the 1U-7309 Shim Adjustment Tool (Tool (G) ) in position on top of the 1U-7312 Calibration Plate (Tool (I) ). Place the 1U-7313 Gauge Block (Tool (H) ) on top of Tool (I) and under Tool (G) in order to zero the dial indicator. Lift up and rotate the knurled portion of Tool (G) until ball (X) on the end of the stem rests on Tool (H). The above illustration shows the correct method for setting the dial indicator to zero. Make sure that only the ball touches Tool (H). If the stem before the ball touches Tool (H) an incorrect setting will result.
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| Illustration 45 | g00655490 |
(G) 1U-7309 Shim Adjustment Tool (H) 1U-7313 Gauge Block (I) 1U-7312 Calibration Plate (X) Ball on the end of the stem | |
- Install Tool (G) on the governor front housing and remove the bushing from the hole in the Tool. Install riser (19) and put the bushing in position on Tool (G). Install the 1U-7314 Weight (Tool (J) ) on top of riser (19) in order to compress the shims. Lift up on the knurled portion of Tool (G) and use the pointer to place ball (X) in the riser slot. Carefully lower ball (X) onto the slot on the riser and read the dial indicator. The reading on the dial indicator should be 0.00 ± 0.08 mm (0.000 ± 0.003 inch). Shims must be added in order to increase the reading on the dial indicator. Shims must be removed in order to decrease the reading on the dial indicator.
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| Illustration 46 | g00655501 |
(G) 1U-7309 Shim Adjustment Tool (19) Riser | |
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| Illustration 47 | g00655505 |
(J) 1U-7314 Weight (X) Ball on the end of the stem | |
- When the correct thickness of shims is determined, remove the riser assembly. Remove Tool (A). Install the correct number of shims (23) and retaining ring (20) .
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| Illustration 48 | g00564742 |
- Install riser (19) onto the riser shaft and into front governor front housing (18) .
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| Illustration 49 | g00522534 |
- Put governor rear housing (17) in position on governor front housing (18). Make sure that the fulcrum swivels are engaged with the control lever and the spool. The riser swivel must be engaged in the riser and the shutoff assembly must be rotated out of the way.
Note: The swivel in the long arm of the fulcrum lever goes into the spool. The swivel in the short arm of the fulcrum lever goes into the control lever.
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| Illustration 50 | g00522532 |
- Install six bolts (16) that hold the governor rear housing and the governor front housing together. Tighten bolts (16) to a torque of 12 ± 3 N·m (9 ± 2 lb ft).
Note: Look through the hole in the rear cover at the spool on the riser. The spool on the riser should move up and down as the throttle is actuated from low idle to high idle. If the spool on the riser does not move, the front and the governor rear housings are not assembled correctly.
- Screw the coils of spring pair (14) onto spring seat assembly (15). Align the springs so that the springs are even with the spring seat and each other.
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| Illustration 51 | g00521797 |
Typical Governor (1) Bolt (2) Orifice for the dashpot (3) O-ring seal (4) Bolt (5) Cover (6) Cover assembly (7) O-ring seal (8) Shims (9) Rear spring seat (10) Retaining ring (11) Spacer (12) Piston assembly for the dashpot (13) Shims for the high idle governor (if equipped) (14) Spring pair (15) Spring seat assembly | |
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| Illustration 52 | g00522519 |
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| Illustration 53 | g00522517 |
- Slide spring seat assembly (15) onto the riser shaft with the springs toward the outside.
Note: Rotate the springs on the spring seat so that the inner spring is aligned with the outer spring. Remove the sharp edges from the flat surface on the inside diameter of the springs. This will ensure that the springs are seated properly on the spring seat.
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| Illustration 54 | g00522516 |
- Install shims (13) for the governor high idle, if necessary.
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| Illustration 55 | g00522514 |
- Install shims (8) for the high idle governor (if equipped) and spacer (11) onto governor spring seat (9) .
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| Illustration 56 | g00522509 |
- Install governor spring seat (9) onto the riser shaft.
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| Illustration 57 | g00521803 |
- Remove O-ring seal (7). Lightly lubricate the bore of the governor rear housing with clean engine oil and loosely install cover (6). Drain the oil from cover (6) into a suitable container for storage or disposal.
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| Illustration 58 | g00521802 |
- Put cover assembly (6) in position on the governor. Install three bolts (1) and evenly tighten the bolts.
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| Illustration 59 | g00521801 |
- Ensure that orifice (2) for the dashpot is not plugged. Also ensure that orifice (2) is tight in the casting.
- Install O-ring seal (3) onto cover (5) .
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| Illustration 60 | g00521800 |
- Put cover (5) in position on cover assembly (6) and install three bolts (4) .
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| Illustration 61 | g00521798 |
- Install the 1U-7308 Shim Adjustment Tool (Tool (K) ) and put the dial indicator point on the center of the rear cover. Push down on the rear cover until the cover makes contact with the governor housing. Zero the dial indicator. Slowly release the pressure on the rear cover. As the cover is pushed out by the force of the spring under the cover, rotate the cover for approximately 90 degrees. The reading on the dial indicator will determine the amount of preload on the spring. Add shims or remove shims in order to establish the proper preload on the spring. Refer to the Technical Marketing Information (TMI) for the governor spring preload dimension according to the governor group number.
Note: The rear cover assembly must move freely.
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| Illustration 62 | g00654412 |
Note: Before performing Step 72, the low idle screw must be backed out completely so that the throttle lever contacts the governor housing. The low idle adjustment is made during governor calibration.
- Remove Tool (K) and cover assembly (6). Install O-ring seal (7) on cover assembly (6). Put cover assembly (6) in position and install bolts (1) .
Note: The preload dimension that is stated in the TMI should only be used for reference. The manufacturer of the governor is not required to meet the specification. The number of governor spring shims is determined by the governor test bench calibration. Governor spring shims are added in order to increase the tension on the high idle screw. Governor spring shims are removed in order to meet the function of low idle lug specification. If you are rebuilding the governor, the reference for the governor spring preload dimension is a good starting point.