240SX L4-2.4L (KA24DE) (1993)
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Technical Service Bulletin # 98-092
Date: 981115
Engine - New Timing Chain/Front Cover Service Procedure
Classification:
EM98-008
Reference:
NTB98-092
Date:
November 15, 1998
1991-98 240SX TIMING CHAIN/FRONT COVER
REVISED SERVICE PROCEDURE
APPLIED ENGINE:
KA24DE
SERVICE INFORMATION
A revised service procedure for the engine front cover/timing chain has been adopted for the KA24DE. It is no longer recommended to remove the
cylinder head when removing the timing chain/front cover(s). Utilize the following steps when servicing the front cover, timing chain, guides or
tensioner(s).
PARTS INFORMATION
CLAIMS INFORMATION
Please reference the "Revision B" pages of the Nissan "1992-1999 Warranty Flat Rate Information Manual", Section "AG", Op Codes AG14M,
AG143A, AG144A, AG22M, and AG24AA. You will note that the descriptions and flat rate times applicable to the S13/S14 vehicles for these Op
Codes have been revised to reflect this new procedure. Also note that Op Codes AG50AA and AG504A have been deleted.
Service Procedure
CAUTION:
^
After removing the timing chain, do not turn the crankshaft and camshaft separately or the valves will strike the piston heads.
^
When installing chain tensioners or other sliding parts, lubricate contacting surfaces with new engine oil.
^
Apply new engine oil to bolt threads and seat surfaces when installing the camshaft sprockets and the crankshaft pulley.
^
Do not spill engine coolant on the drive belts.
^
Please refer to the Service Manual for the correct tightening torque.
Removal of Upper Timing Chain
1.
Remove the spark plug wires.
2.
Set # 1 piston at TDC on its compression stroke.
3.
Remove vacuum hoses, electrical harness, connectors, and harness clamps.
4.
Remove the rocker cover.
5.
Remove the distributor.
6.
Remove camshaft sprocket cover.
