Specifications

REVISION A
Page 2
Service Bulletin #738 407
C. Loctite product 515 Gasket Eliminator is available through Industrial Bearing Suppliers.
III. The compound listed above may be used to mount the differential carrier to the axle housing or to assemble
the differential carrier itself. The following materials may also be used to mount or assemble the differential
carrier:
A. General Electric 1473 Silicone RTV “Silmate”.
B. Dow 732 Silicone RTV “Silastic”.
C. Loctite 504 “Gasket Eliminator”.
D. Loctite 510.
IV. Recommended Application Procedures:
A.
C.
D.
Following the pattern shown in the attached sketches, apply the gasket compound in a 1/8” diameter
bead. Encircle stud or cap screw holes completely. On axle models incorporating threaded puller
holes, be sure to keep the bead of material inside the location of the hole.
Assemble the components without lateral movement and torque fasteners. Fastener torques should be
checked within thirty minutes of assembly for compliance with service manual specifications which
remain unchanged. It is important to check and, if necessary, re-torque fasteners within thirty minutes
of assembly because they will tend to leak if re-torqued after the gasket compound has cured.
After assembly, the axle can be filled with oil and used immediately if necessary. It is however,
advisable to allow as much time as possible for the compound to cure fully. Axles employed in severe
applications should not be operated for six to twelve hours, allowing more cure time for the sealant.
V.
The following gaskets have been eliminated.
427 249
427 389
427 257
427 392
427 378
427 452
427 379
427 454
427 382
427 455
427 262
427 395
738 407
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