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-7310 | Torque Adjusting Tool (1) | 1 |
| H | 1U-7311 | Wrench (1) | 1 |
| I | 1U-7309 | Shim Adjustment Tool (1) | 1 |
| J | 1U-7313 | Gauge Block (1) | 1 |
| K | 1U-7312 | Calibration Plate (1) | 1 |
| L | 1U-7314 | Weight (1) | 1 |
| M | 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.
- Mount the drive gear end of the governor on Tool (A). Install gear assembly (90) .
Note: Put clean engine oil on all parts before assembly. Ensure that all of the oil passages in the governor are free of obstructions.
 | |
| Illustration 1 | g00523199 |
Note: Inspect the cam on the fuel transfer pump. If the cam has excessive wear, it will be necessary to replace the entire drive assembly.
- Install C spring (89) carefully in order to avoid personal injury.
 |
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. |
 |
 | |
| Illustration 2 | g00523198 |
- Install cover (88). Install the sleeve assembly and bolt (87) that holds cover (88) in position.
 | |
| Illustration 3 | g00523197 |
- Install fuel ratio control lever (84) onto shaft (85) .
 | |
| Illustration 4 | g00523195 |
- Install O-ring seal (86) onto fuel ratio control valve (81) .
 | |
| Illustration 5 | g00523196 |
- Put fuel ratio control valve (81) in position on the governor. Install bracket (82) and bolt (83) in order to hold fuel ratio control valve (81) in position.
 | |
| Illustration 6 | g00523194 |
- Install limit lever assembly (78), washer (79), and spring (80). Ensure that the straight end of spring (80) is resting on the aluminum casting.
 | |
| Illustration 7 | g00523193 |
- Install retaining clip (77) .
 | |
| Illustration 8 | g00523192 |
- Use the following procedure to assemble the later style of governor output servo assembly.
- Thoroughly clean all of the parts of the governor output servo assembly.
- Install servo valve (72) into servo piston (71) .
Show/hide table
Illustration 9 g00523041
Governor Output Servo (Later Style)
(70) Sleeve
(71) Servo piston
(72) Servo Valve
(73) Clevis
(74) Spring pin
(75) O-ring seal
(76) Tolerance Ring
- Install O-ring seal (75) onto sleeve (70) and slide the sleeve onto servo piston (71) .
- Install a new 109-4587 Tolerance Ring (76) into the large bore in the end of servo piston (71). Position the tolerance ring so that the gap in the tolerance ring lines up with the hole through the side of the piston that is for spring pin (74). Push the tolerance ring 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 assembly in position on Tool (C). Install servo valve (72) in an upward position.
Show/hide table
Illustration 10 g00524388
(B) 1U-7635 Clevis Driver
(C) 1U-7606 Servo Block
(70) Sleeve
(71) Servo piston
(73) Clevis
- Put clevis (73) in position on the servo valve, as shown. Use Tool (B) to press clevis (73) into servo piston (71) from the end with the tolerance ring.
- Position clevis (73) so that the hole for spring pin (74) is in alignment with the gap in the tolerance ring and the hole in servo piston (71). Press clevis (73) until the clevis bottoms out against servo piston (71) .
- 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 (74) is aligned with clevis (73). Use Tool (D) to press a new 6D-9953 Spring Pin (74) into the governor output servo until the end of the spring pin is flush with the outside diameter of the servo piston.
Show/hide table
Illustration 11 g00524660
(C) 1U-7606 Servo Block
(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 (72) into servo piston (71) .
Show/hide table
Illustration 12 g00523034
Governor Output Servo (Earlier Style)
(70) Sleeve
(71) Servo piston
(72) Servo Valve
(73) Clevis
(74) Spring pin
(75) O-ring seal
- Install O-ring seal (75) onto sleeve (70) and slide the sleeve onto servo piston (71) .
- 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.
Show/hide table
Illustration 13 g00524383
(C) 1U-7606 Servo Block
(71) Servo piston
(73) Clevis
- Insert clevis (73) into the piston bore.
- Align the holes in clevis (73) and servo piston (71). Press a new 4H-1641 Spring Pin (74) until the end of the spring pin is flush with the outside diameter of servo piston (71) .
- To install governor output servo (68) into the governor rear housing, push the small end of the governor output servo through the opening in the governor rear housing. Install control sleeve (64), spring (65) and limit sleeve (66) onto the governor output servo.
 | |
| Illustration 14 | g00524666 |
 | |
| Illustration 15 | g00523033 |
Note: Lubricate the bore of the governor rear housing lightly with clean engine oil before the governor output servo is installed.
- Press on the clevis of governor output servo (68) until the governor output servo is seated in the bore of the governor rear housing. Install retaining ring (69) with Tool (E) .
- Push limit sleeve (66) and control sleeve (64) toward the side of the governor housing that holds the clevis in order to compress spring (65). Install retaining ring (67) when spring (65) is compressed.
Note: Some servo assemblies may have a second retaining ring on the servo valve. Install the second retaining ring between the control sleeve and the limit sleeve.
- Install the spring and fulcrum lever (61) on pivot shaft (60). Install torsion spring (62) and torque cam adjuster (63) onto pivot shaft (60) .
 | |
| Illustration 16 | g00523007 |
- Install bearing block assembly (56) onto pivot shaft (60) .
 | |
| Illustration 17 | g00523005 |
- Install riser lever (59) onto bearing block assembly (56). Use Tool (B) to install retaining ring (58). Install bolt (57) but do not tighten the bolt at this time. Use a feeler gauge to obtain a 0.15 ± 0.05 mm (0.006 ± 0.002 inch) clearance between bearing block (56) and riser lever (59). When the proper clearance is reached, tighten bolt (57) .
 | |
| Illustration 18 | g00523003 |
- Put bearing block (56) into position in the governor rear housing. Install two bolts and washers (55). Tighten the bolts to a torque of 4 ± 1 N·m (35 ± 9 lb in).
 | |
| Illustration 19 | g00522954 |
| 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. |
Note: Scribe marks (X) indicate the vertical position of the bearing block and the horizontal position of the bearing block. Scribe marks (X) were made during disassembly. The marks are located on the aluminum housing near the hole for the fuel shutoff solenoid. The bearing block assembly must be located as close as possible to the scribe marks.
- Mount the governor rear housing on the 1U-7307 Governor Repair Fixture (Tool (A) ) with the three legs that are included. Prepare seal (54) for the governor rear housing. Do not install seal (54) until the gap for the torque cam is adjusted.
 | |
| Illustration 20 | g00695589 |
- Use the following procedure to adjust the gap for the Torque Cam on Type III governors.
- Install the three legs that are included with Tool (A), as shown. Install the governor rear housing on the legs.
Show/hide table
Illustration 21 g00524706
(1) Seal
(A) Governor Repair Fixture
(G) Torque Adjusting Tool and Dial Indicator
(H) Wrench
Show/hide table
Illustration 22 g00524770
(2) Riser lever
(3) Riser lever swivel
(4) Torque cam setscrew
(5) Shoulder for the torque cam lever
(6) Torque cam lever
(7) Torque cam
(X) Torque cam dimension
- Use the 1U-7310 Torque Adjusting Tool (Tool (G) ) to adjust the position of the torque cam.
- Grasp riser lever (2) and rotate the riser lever counterclockwise. Rotate the riser lever until torque cam lever (6) snaps past shoulder (5) on torque cam (7). Move torque cam lever (6) over shoulder (5) on torque cam (7). Rotate riser lever (2) clockwise until torque cam lever (6) contacts shoulder (5) on torque cam (7) .
- Use two of the bolts that are furnished in the former 1U-9088 Governor Repair Group to fasten Tool (G) to the governor housing. The post of Tool (G) should be facing downward in order to make contact with riser lever swivel (3). Attach a 5S-8086 Contact Point to the tip of the dial indicator. Install the dial indicator into Tool (G) until the dial indicator bottoms out. The tip of the dial indicator should rest on the edge of riser lever (2) .
- Place the 1U-7311 Wrench (Tool (H) ) into torque cam setscrew (4). Use Tool (H) as a lever in order to rotate torque cam (7) counterclockwise until riser lever swivel (3) contacts the post on Tool (G). Continue rotating torque cam (7) counterclockwise in order to wind up the torsion spring. Hold Tool (H) in this position and zero the dial indicator. The large dial makes several sweeps during the procedure. It is important to zero all of the dials in order to be certain of the total indicator reading at the end of the procedure. Tighten the setscrew on Tool (G) in order to secure the dial indicator.
- Use Tool (H) as a lever again and rotate the assembly counterclockwise until torque cam (7) and torque cam setscrew (4) break apart. Release the pressure on Tool (H) slowly until the setscrew comes in contact again with torque cam (7). Remove your hand from Tool (H). The reading on the dial indicator will show dimension (X) for the torque cam. Refer to the TMI in order to get the correct Dimension (X) .
- If necessary, adjust the setscrew and repeat Steps 19.e and 19.f until the correct dimension (X) is indicated on the dial indicator.
- Install seal (1) on the governor rear housing.
- Remove the governor rear housing from Tool (A). Install the governor front housing in Tool (A) .
- Install lower O-ring seal (53) into the fuel transfer pump housing.
 | |
| Illustration 23 | g00522952 |
- Install piston (52) into sleeve assembly (50) .
 | |
| Illustration 24 | g00522951 |
 | |
| Illustration 25 | g00522950 |
- Install sleeve assembly (50) and tappet (51) into the governor front housing.
- Install spring (48) and O-ring (49) .
 | |
| Illustration 26 | g00522905 |
- Hold cover assembly (47) in position on the governor front housing and install three bolts (46) .
Note: Make sure that cover assembly (47) is securely fastened to the governor housing. Fuel may leak around the O-ring seal if cover assembly (47) is not tight. Make sure that the fuel inlet fitting is tight in cover assembly (47) in order to ensure that no leaks occur.
 | |
| Illustration 27 | g00522904 |
|
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. |
|
- Install a new throttle shaft seal (45) if the seal was removed.
 | |
| Illustration 28 | g00522902 |
- Install throttle shaft (37) into the governor front housing.
 | |
| Illustration 29 | g00522900 |
- Install retaining clip (44) onto shaft (37) .
 | |
| Illustration 30 | g00522898 |
- Install control lever (40), setscrew (41), spring (42), and spacer (43) onto throttle shaft (37) .
 | |
| Illustration 31 | g00522826 |
- Install retaining clip (39) onto throttle shaft (37) .
 | |
| Illustration 32 | g00522823 |
- Install spring (38) for the throttle lever onto throttle shaft (37) .
 | |
| Illustration 33 | g00522822 |
- Install blade (34) and blade (36) onto shutoff assembly (33). Tighten the bolts that hold blades (34) and (36) to a torque of 2.0 ± 0.2 N·m (18 ± 2 lb in).
Note: Spring (35) should not have been removed.
 | |
| Illustration 34 | g00522821 |
- Put shutoff assembly (33) into position. Install the two bolts and washers (32) that fasten the shutoff assembly to the governor housing.
 | |
| Illustration 35 | g00522819 |
- Install flyweight carrier (28) onto riser shaft (30). Install pin (31) into riser shaft (30) .
 | |
| Illustration 36 | g00522582 |
- Install flyweight carrier (28) and riser shaft (30) onto the gear carrier. 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.
 | |
| Illustration 37 | g00524779 |
Note: Ensure that flyweight carrier (28) and riser shaft (30) are seated properly in the gear carrier before the eight new carrier bolts (29) are tightened.
- Install flyweight (25) onto flyweight toe (27) .
 | |
| Illustration 38 | g00522576 |
 | |
| Illustration 39 | g00522574 |
- Install flyweight pin (26) through the bore in flyweight (25) and flyweight toe (27) .
- Install flyweights (25) in the original location.
 | |
| Illustration 40 | g00522537 |
- Install four bolts and four washers (24) that hold the flyweights in position. Tighten bolts (24) to a torque of 2.2 ± 0.2 N·m (19 ± 2 lb in).
 | |
| Illustration 41 | 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) .
 | |
| Illustration 42 | g00522535 |
- Put the 1U-7309 Shim Adjustment Tool (Tool (I) ) in position on top of the 1U-7312 Calibration Plate (Tool (K) ). Place the 1U-7313 Gauge Block (Tool (J) ) on top of Tool (K) and under Tool (I) in order to zero the dial indicator. Lift up and rotate the knurled portion of Tool (I) until ball (X) on the end of the stem rests on Tool (J). The above illustration shows the correct method for setting the dial indicator to zero. Make sure that only the ball touches Tool (J). If the stem before the ball touches Tool (J) an incorrect setting will result.
 | |
| Illustration 43 | g00525712 |
(I) 1U-7309 Shim Adjustment Tool (J) 1U-7313 Gauge Block (K) 1U-7312 Calibration Plate (X) Ball on the end of the stem | |
- Install Tool (I) 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 (I). Install the 1U-7314 Weight (Tool (L) ) on top of riser (19) in order to compress the shims. Lift up on the knurled portion of Tool (I) 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.
 | |
| Illustration 44 | g00533006 |
(I) 1U-7309 Shim Adjustment Tool (19) Riser | |
 | |
| Illustration 45 | g00533008 |
(L) 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 (22) and install retaining ring (20) .
 | |
| Illustration 46 | g00564742 |
- Install riser (19) onto the riser shaft and into governor front housing (18) .
 | |
| Illustration 47 | 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.
 | |
| Illustration 48 | g00522532 |
- Install six bolts (16) that hold the governor rear housing and the governor front housing together. Tighten the bolts 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.
 | |
| Illustration 49 | 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 | |
 | |
| Illustration 50 | g00522519 |
 | |
| Illustration 51 | 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.
 | |
| Illustration 52 | g00522516 |
- Install shims (13) for the governor high idle, if necessary.
 | |
| Illustration 53 | g00522514 |
- Install shims (8) and spacer (11) onto governor spring seat (9) .
 | |
| Illustration 54 | g00522509 |
- Install governor spring seat (9) onto the riser shaft.
 | |
| Illustration 55 | 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 the rear sump cover into a suitable container for storage or disposal.
 | |
| Illustration 56 | g00521802 |
- Put cover assembly (6) in position on the governor. Install three bolts (1) and evenly tighten the bolts.
|
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. |
|
 | |
| Illustration 57 | 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) .
 | |
| Illustration 58 | g00521800 |
- Put cover (5) in position on cover assembly (6) and install three bolts (4) .
 | |
| Illustration 59 | g00521798 |
- Install the 1U-7308 Shim Adjustment Tool (Tool (M) ) 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.
Note: Before performing Step 57, 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.
 | |
| Illustration 60 | g00565297 |
(M) 1U-7308 Shim Adjustment Tool | |
- Remove Tool (M) 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.