Flywheel Housing Replacement

TM 9-2320-363-34-1 · Chapter 3 — Power Package Maintenance

This task covers: a. Removal b. Cleaning c. Inspection d. Installation

Tools and Special Equipment:                         Equipment Condition:
Shop Equipment, SC 4910-95-CL-A31                    Reference              Condition Description
Tool Kit, SC 5180-90-CL-N05
Guide Stud (2), J35785                               Page 3-48 or 3-52      Rear Engine Mounts
Caulking Gun, 805774                                                        Removed
Seal Expander, J35685-A
                                                     TM 9-2320-363-20       Starter Removed
Materials/Parts:                                     Page 12-3              Engine Installed on
Eliminator, Gasket       Appendix B, Item 18                                Repair Stand
                                                     Page 3-154             Flex Plate Removed
References:
                                                     Page 3-220             Oil Pan Removed
TM 9-2320-363-20

1. REMOVE FOUR BOLTS (1) AND FOUR WASHERS (2) FROM FLYWHEEL HOUSING (3).

2. INSTALL TWO GUIDE STUDS (4).

3. REMOVE EIGHT BOLTS (5) AND EIGHT WASHERS (6) FROM FLYWHEEL HOUSING (3).

Use soft mallet to tap flywheel housing loose from cylinder block. Failure to use soft mallet could result in damage to equipment.

4. REMOVE FLYWHEEL HOUSING (3).

5. REMOVE AND DISCARD CRANKSHAFT REAR OIL SEAL (PAGE 3-141 or 3-145).

6. REMOVE TWO GUIDE STUDS (4) FROM CYLINDER BLOCK (7).

Use general cleaning methods to clean all parts (page 2-30).

Inspect all parts for wear or damage.

1. APPLY CONTINUOUS 1/16-lN. BEAD OF GASKET ELIMINATOR TO REAR FACE OF CYLINDER BLOCK (1) WHERE IT CONTACTS FLYWHEEL HOUSING.

2. INSTALL TWO GUIDE STUDS (2) ON CYLINDER BLOCK (1).

3. POSITION FLYWHEEL HOUSING (3) CAREFULLY ON GUIDE STUDS (2), WORKING IT FORWARD UNTIL FLYWHEEL HOUSING (3) CONTACTS CYLINDER BLOCK (1).

4. INSTALL EIGHT WASHERS (4), EIGHT BOLTS (5), TWO WASHERS (6), AND TWO BOLTS (7) HAND-TIGHT.

5. REMOVE TWO GUIDE STUDS (2) AND INSTALL TWO WASHERS (8) AND TWO BOLTS (9) HAND-TIGHT.

6. TIGHTEN 12 FLYWHEEL HOUSING ATTACHING BOLTS TO 75-93 LB-FT (101-126 N.m) IN SEQUENCE SHOWN.

7. INSTALL CRANKSHAFT REAR OIL SEAL (PAGE 3-141 or 3-145).

8. INSTALL FLEX PLATE (PAGE 3-154).

9. ASSEMBLE DIAL INDICATOR (10) TO FLEX PLATE (11).

Make sure dial indicator is positioned straight and square with flywheel housing bell face or inside bore of bell. Make sure indicator has adequate travel in each direction.

10. USING DIAL INDICATOR (10), CHECK FLYWHEEL HOUSING CONCENTRICITY AND BOLTING FLANGE FACE RUNOUT.

11. MAKE SURE ENGINEIS IN VERTICAL POSITION WITH FLYWHEEL HOUSING (3) END UP.

12. MAKE SURE END PLAY IS IN ONE DIRECTION ONLY. TAP END OF CRANKSHAFT WITH SOFT HAMMER TO POSITION IT TOWARD ONE END OF BLOCK.

Maximum total indicator reading must not exceed 0.013 in. (0.33 mm) for bore or face.

13. ADJUST DIAL INDICATOR (10) TO READ ZERO. ROTATE CRANKSHAFT ONE FULL REVOLUTION, TAKING READINGS AT 90-DEGREE INTERVALS (FOUR READINGS EACH FOR BORE BOLTING AND FACE).

14. IF RUNOUT EXCEEDS MAXIMUM LIMITS, REMOVE FLYWHEEL HOUSING (3) AND CHECK FOR DIRTOR FOREIGN MATERIAL BETWEEN FLYWHEEL HOUSING AND CYLINDER BLOCK OR OIL PAN MATING SURFACE. CLEAN MATING SURFACES. INSTALL FLYWHEEL HOUSING (3) AND REPEAT STEPS 9 THRU 13.

15. IF READINGS ARE NOT WITHIN SPECIFICATION, REPLACE FLYWHEEL HOUSING (3).

16. REPEAT STEPS 9 THRU 13 TO CHECK FLYWHEEL HOUSING (3) CONCENTRICITY AND BOLTING FLANGE FACE RUNOUT.

Install oil pan (page 3-220). Remove engine from stand (page 12-3). Install starter (TM 9-2320-363-20). Install rear engine mounts (page 3-48 or 3-52).