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 86 of 1258
TM 9-2320-280-34
3-12.
RIGHT ROCKER ARM COVER MAINTENANCE
This task covers:
a.
Removal
c.
Installation
b.
Repair
INITIAL SETUP:
Tools
Equipment Condition
General mechanic's tool kit:
Engine access cover removed (TM 9-2320-280-20).
automotive (Appendix G, Item 1)
Fuel injection lines removed (para.
4-4).
Fuel injection lines bracket removed
Materials/Parts
(TM 9-2320-280-20).
RTV sealant (Appendix B, Item 43)
CDR valve bracket removed (TM 9-2320-280-20).
Valve cover gasket (Appendix E, Item 37)
Heater outlet/inlet piping removed
(TM 9-2320-280-20).
Manual References
TM 9-2320-280-20
Maintenance Level
TM 9-2815-237-34
Direct support
TM 9-2815-237-34P
a.
Removal
NOTE
In some cases, flanged head fasteners may be present instead of standard fasteners and
washers.
In all cases, washers should be used when replacing a flanged head fastener with
a standard fastener.
1.
Remove capscrew (6) and transmission oil dipstick tube (7) from cylinder head (5).
2.
Remove a combination of two capscrews (3), six studs (2), four washers (1), and rocker arm cover (4)
from cylinder head (5).
b.
Repair
For rocker arm cover repair procedures, refer to TM 9-2815-237-34.
c.
Installation
NOTE
When applying RTV sealant, keep sealant out of capscrew holes.
During installation, RTV sealant or new gasket is approved.
If applying RTV sealant, perform step 1.
If installing new gasket, RTV sealant may be applied with the gasket, but is not
required.
1.
Apply a .06 in.
(1.5 mm) bead of RTV sealant around rocker arm cover (4) sealing surface.
2.
Install rocker arm cover (4) on cylinder head (5) with eight washers (1), two capscrews (3), and six
studs (2) following assembly diagram.
3.
Tighten capscrews (3) and studs (2) to 13-25 lb-ft (18-34 Nm).
4.
Install transmission oil dipstick tube (7) on cylinder head (5) with capscrew (6).
Tighten capscrew (6) to
25-37 lb-ft (34-50 N m).
3-26
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