Vibration Damper 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
                                                  TM 9-2320-363-20       Fan Belt Removed
References:
TM 9-2320-363-20

                                       CAUTION
          Take care not to pry or drop vibration damper to prevent damage to
          equipment. Vibration damper must be replaced if chipped or damaged,
          Support pulley and damper during removal to prevent damage to equipment.

1.   REMOVE SIX CRANKSHAFT PULLEY ATTACHING BOLTS (1) AND SIX WASHERS (2)
     CRANKSHAFT PULLEY (3).
TM page 3-123
Illustration from TM 9-2320-363-34-1 (PDF page 199)

TM 9-2320 -363-34-1

CAUTION

To prevent damage to equipment, do not pound or pry on vibration damper to aid in removal.

NOTE

Discard vibration damper at major engine overhaul or whenever engine requires crankshaft replacement.

2. REMOVE CRANKSHAFT PULLEY (3).

3. REMOVE VIBRATION DAMPER (4).

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

1. INSPECT VIBRATION DAMPER FOR DENTS, GOUGES, FLUID LEAKS, OR BULGES. REPLACE VIBRATION DAMPER IF ANY OF THESE CONDITIONS ARE FOUND.

2. INSPECT CRANKSHAFT PULLEY FOR CRACKED, BROKEN, OR BENT FLANGES. REPLACE CRANKSHAFT PULLEY IF ANY OF THESE CONDITIONS ARE FOUND.

3. MAKE SURE CRANKSHAFT PULLEY AND VIBRATION DAMPER MATING SURFACES ARE CLEAN AND FREEOF DIRTOR DAMAGE.

TM page 3-124
Illustration from TM 9-2320-363-34-1 (PDF page 200)
Illustration from TM 9-2320-363-34-1 (PDF page 200)
CAUTION Support pulley and damper during installation to prevent damage to equipment. **NOTE**

Part number stamped on vibration damper should face out (away from engine) when vibration damper is installed, Make sure mating surfaces of crankshaft pulley and vibration damper are clean and free of dirt or damage.

1. INSTALL VIBRATION DAMPER (1) AGAINST CRANKSHAFT BUTT (2) AND SEAT FIRMLY.

TM page 3-125
Illustration from TM 9-2320-363-34-1 (PDF page 201)

2. INSTALL CRANKSHAFT PULLEY (3) AND SEAT FIRMLY AGAINST VIBRATION DAMPER (1).

3. INSTALL SIX WASHERS (4) AND SIX CRANKSHAFT PULLEY ATTACHING BOLTS (5) HAND-TIGHT.

4. TIGHTEN SIX CRANKWAFT PULLEY ATTACHING BOLTS (5) TO 134-155 LB-FT (182-210 N.m).

NOTE Follow-on Maintenance:

Install fan belt (TM 9-2320-363-20).

TM page 3-126
Illustration from TM 9-2320-363-34-1 (PDF page 202)