Spicer Drive Axles Application Guidelines - Manual (Page 43)

AXAG-0200 June 2009 43
Rescue - Additional Important Information
Important Notes
1.
The following optional components are approved by this Guideline. All options may not be available on every axle model.
a. Driver-Controlled Differential Lock
b. Oil Pump
c. Low Maintenance Wheel Ends ( LMS )
2. The use of NoSPIN differentials in any drive axles will result in the exclusion of axle shafts from warranty consideration.
Certain other carrier components may also be excluded from warranty consideration if their failure is deemed to be the result
of NoSPIN use. Depending on axle loading, the NoSPIN can cause all torque to be directed to one axle shaft resulting in
overload and potential failure. “NoSPIN ® ” is a registered trademark of Tractech, Inc., a Division of Dana Corporation.
3.
For certain suspension models, Dana may require the use of an increased housing wall thickness. Refer to the Housing
Structural Rating Section of this Guideline or contact Dana CVP Application Engineering for specific requirements.
4.
Drive Axle application approval and allowable gross axle weight is based on the vehicle suspension selected. Dana CVP is
not responsible for the durability of any bracket attached to the axle housing(s) unless produced by Dana Holding
Corporation. In addition, Dana CVP is responsible for the integrity of the bracket attachment only if the bracket is installed
by Dana or if the bracket is installed by the vehicle manufacturer following detailed recommended procedures provided by
Dana through prior agreement.
5.
It is the responsibility of the vehicle manufacturer and/or the dealer to accurately convey all approved axle loading
information to the body builder if the chassis is sold as incomplete. It is also the responsibility of the final vehicle builder to
insure the assigned tagged values for GAWR and GVW / GCW do not exceed those limits approved by this vocational
Guideline. Dana is not responsible for non-compliance to this request.
6.
In vehicles equipped with driving steer axles , the wheel speed mismatch between the front and rear axles is a concern. This
mismatch is affected by the front and rear axle ratio as well as tire revolutions per mile (TRPM). The % of mismatch
calculation is:
% mismatch = (Rear axle ratio x rear axle tire TRPM) - (front drive axle ratio x front tire TRPM)
Rear axle ratio x rear tire TRPM
Dana CVP Application Engineering requires this mismatch not exceed 1.5% for application approval.
7.
Drive axles configured with single tires and outset wheels that increase track over standard require special consideration.
Allowable gross axle weight ratings may have to be reduced from the nominal rating to compensate for the increase in
housing stress created through the use of outset wheels. Refer to the Housing Structural Rating Section of this Guideline for
additional information regarding increased gross axle weight ratings based on increased track width due either to the use of
outset single tires or wide track housings .
8.
Oil pump and Driver Controlled Wheel Differential Lock(s) are recommended for Rescue operations where vehicles operate
in areas of poor traction.
9.
Vehicle testing of any nature voids the warranty on Dana Spicer ® drive axles.
10.
For specific warranty coverage for the Rescue vocation, see Spicer Warranty Guide (TCWY0900) .
11.
For approval of Spicer Transmission, Spicer Clutch, Spicer ® Driveline, Bendix ® Brake, and all other components contact
Spicer ® 1-800-621-8084.