TM-9-2320-280-34
TRUCK, UTILITY: M998 SERIES
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
JANUARY 1996
TM-9-2320-280-34 - Page 59 of 1258
3 - 3 . ENGINE MOUNT AND INSULATOR MAINTENANCE
This task covers:
a.
Removal
c.
Assembly
b.
Disassembly
d.
Installation
a. Removal
NOT E
Left and right engine mounts are removed basically the same
except right hand engine mounts have a starter support bracket.
1.
Remove two locknuts (9) and washers (10) from insulator (11) on engine mount bracket (8). Discard
locknuts (9).
NOT E
Perform steps 2 and 3 for right engine mount only.
2.
Loosen nut (12) securing starter (13) to starter support bracket (1).
NOT E
Proceed to step 4 for vehicles with new support bracket configuration.
3.
Remove two capscrews (3), lockwashers (2), and starter support bracket (1) from starter (13) and
right engine mount (4). Discard lockwashers (2).
4.
Remove three capscrews (7) and lockwashers (6) from right engine mount (4) and cylinder block (5).
Discard lockwashers (6).
5.
Remove capscrew (14) and grounds 3A (15) and 58A (16) from left cylinder head (17).
6.
Remove four locknuts (22), washers (21), and capscrews (19) from radiator supports (18) and airlift
brackets (20). Discard locknuts (22).
INITIAL SETUP:
To o l s
____
General mechanic's tool kit:
automotive (Appendix G, Item 1)
Special To o l s
__________
Crowfoot, 5/8 in. (Appendix G, Item 110)
Torque adapter, 9/16 in. (Appendix G, Item 106)
Torque adapter, 3/4 in. (Appendix G, Item 107)
Adapter, 3/8-1/2 in. (Appendix G, Item 108)
Engine lifting sling (Appendix G, Item 22)
M a t e r i a l s / P a rt s
_____________
Eight lockwashers (Appendix E, Item 85)
Twelve locknuts (Appendix E, Item 57)
Four locknuts (Appendix E, Item 59)
Antiseize compound (Appendix B, Item 7)
Personnel Require d
________________
One mechanic
One assistant
Manual Refere n c e s
________________
TM 9-2320-280-20
TM 9-2320-280-24P
Equipment Condition
_________________
• Fuel pump removed (right engine mount only)
(TM 9-2320-280-20).
• Right engine splash shield removed
(TM 9-2320-280-20).
• Engine access cover removed (TM 9±-±2±3±2±0±-±2±8±0±-±2±0±)±
.
• Front propeller shaft removed (left engine
mount only) (TM 9-2320-280-20).
• Glow plug controller removed (TM 9 - 2 3 2 0 - 2 8 0 - 2 0 )
.
• Air horn support and engine lift bracket removed
(TM 9-2320-280-20).
General Safety Instructions
______________________
Direct all personnel to stand clear during hoisting
operation.
Maintenance Level
_______________
Direct support
TM 9-2320-280-34
3 - 2
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