SB-210-034 — Page 1 of 1
2002.CNI,SKCURTKCAM©50181AP,NWOTNELLA,SNOITACILBUPECIVRES
SERVICE BULLETIN
NUMBER: SB-210-034
DA TE: 5/14/02
MODEL: E-Tech™
(Also applies to Mack Trucks Australia)
MISCELLANEOUS FASTENER CHANGES — E-TECH™ ENGINES
The following fastener changes were made on E-Tech™ engines:
Injection Nozzle Hold-Down Screws — Beginning 3/00, the injection nozzle hold-
down screws having th e 15 mm external hex head have been changed to a new screw
(par t No. 421GC2116M) that has a 16 mm internal hex head.
Rocker Shaft Mounting Bracket Bolts — Beginning 4/00, the bolts and washers
used to secure the rocker shaft mounting brackets to the cylinder head have been
changed to a flange-head bolt (part No. 65AM5010). Tightening torque value for this
new fastener remains the same at 40 lb-ft (50 N•m).
Air Compressor Mounting Screw — Beginning 8/00, the original hex-head screw has
been changed to a flange-head s crew (part No. 27AM16). This change was made so
that the mounting sc rew clamp load is distributed over a wider area of the flat washer.
Camshaft Thrust Washer — Beginning 10/00, the two screws and washers used to
secure the camshaft thrust washer to the block were changed to a flange-hea d screw
(part No. 66AM 44). Tightening torque value for this fastener rema ins the same at 15 lb-
ft (20 N•m).
Cylinder Head Capscrews — Beginning 6/01, the cylinder head capscrews and the
separate hardened flat washer were replaced in production wit h capscrews having
captured washers (part number series 400GC317M). This change was implemented to
prevent the possibility of omitting or installing more than one washer during assembly.
Additionally, the outside diameter of the captured washer was reduced slightly
(approximately 0.030″) to accommodate the redesigned cylinder he ad cover that was
phased into production 7/01. Cylinder head capscrew torque remains the same at 205
lb-ft (278 N•m).
Flywheel-to-cra nkshaft m ounting bolts — Beginning 9/0 1, bolts having captured
washers (part Nos. 419GC31M and 419GC31M2) were released into production to
replace the previously used bolts and separate hardened flat washer used t o secure
the flywheel t o the crankshaft. Flywheel-to-cranksh aft mounting bolt torque remains the
same at 185 lb-ft (250 N•m).
Electronic Unit Pump (EUP) hold-down screws — Beginning 11/01, new hold-down
screws (part No. 421GC2123M) were released into production for the electronic unit
pumps. These screws are dimensionally th e same as the previously used screws, but
conform to a more stringent specification that controls minor surface forming defects to
a greater degree t han for common fasteners.Torque of the E UP hold-down bolts has
been changed from 42 lb-ft (57 N·m) to 60 lb-ft (81 N·m).
Turbocharger Mounting Nuts — Beginnin g 5/02, new turbocharger mounting nuts
were released into production. These nuts (part No. 142GC247M) are composed of
silver-plated stainless steel to provide greater resistance to heat than the previous nuts.
Additionally, these nuts have the Spiralock™ self-locking thread feature to prevent
loosening in service.
BDC for engine manuals and specs
https://barringtondieselclub.co.za/
To Next Page
Loading...
