B&M Dana 35 User Manual

Instructions

Cast Aluminum Rear End Cover for

DANA 35

(see www.bmracing.com for the latest vehicle fitment applications and model years)

Part Number 10311

© 2013 by B&M Racing and Performance Products

This B&M Cast Aluminum Rear
End Cover has been designed to
work on most vehicles equipped
with a Dana 35 axle. The B&M Cast
Aluminum Rear End Cover
provides several advantages over
stock factory covers. The extra
capacity provides increased oil
volume and added cooling, while the
thick aluminum construction
increases case rigidity. The
reinforced center bar, along with the
load bolts, prevents bearing cap
deflection under severe loads. The
magnetic drain plug feature allows
regular gear oil changes without the
usual mess, and limits ferrous debris
from circulating in the axle.

INTRODUCTION

This cover can be installed in about
an hour by carefully following the
instructions. It is suggested that the
vehicle be allowed to cool off for a
few hours to avoid burns from hot oil
and parts. The vehicle should be off
the ground for ease of installation ­jack stands, wheel ramps or a hoist
will work fine. MAKE SURE
VEHICLE IS FIRMLY SUPPORTED

- DO NOT WORK UNDER A
VEHICLE IF IT IS SUPPORTED BY

ONLY A JACK! Try to raise the
vehicle 1-2 feet so you will have
plenty of room to work. Also, have
a small box to put bolts in and a
drain pan to catch oil.

INSTALLATION

STEP 1. Clean axle housing cover

area from dirt and other debris.

NOTE: On some vehicles it
might be necessary to remove

some parts (e.g. sway bar,
panhard rod) to make the
installation of the cover easier.
STEP 2. Place a drain pan

underneath the axle housing.
STEP 3. Remove the 10 bolts
around the cover.
STEP 4. Carefully pry the cover
loose with a flat head screw driver,
being careful not to damage the
surface, and allow the oil to drain.
STEP 5. Using a dry lint free rag,

Printed in the USA 9500896-00

clean the accessible areas of the
axle housing and check internal
components for visible excessive
wear or other problems.
STEP 6. Clean all gasket material
from the axle housing surface.
STEP 7. We recommend running a
5/16”-18 tap through each threaded
cover hole on the axle housing to
ensure an accurate torque on all
bolts.
STEP 8. Install the supplied load
bolts in each boss from the inside of
the B&M Cast Aluminum Rear End

Cover until they bottom out.
STEP 9. Apply a bead of RTV
silicone gasket maker to the B&M

Cast Aluminum Rear End Cover.
Run the bead inside the bolt holes.
STEP 10. Install the B&M Cast
Aluminum Rear End Cover on

the axle housing using a supplied
bolt and washer at a bottom hole
on the cover so it can be used as a
guide.
STEP 11. Install the rest of the
supplied bolts and washers and
torque to 15 ft/lb in a crisscross
pattern.
STEP 12. Screw in the two load
bolts by hand until they touch the
bearing caps. Torque the load bolts
to 5 ft/lb max.

NOTE: Do not over torque the

load bolts as you run the risk of
distorting the bearing caps,
creating abnormal wear and
premature failure.
STEP 13. Apply a very small

amount of RTV on the threads of
the load bolts, and then install the
two supplied jam nuts onto the
load bolts. Torque the jam nuts to 5
ft/lb.
STEP 14. Install the supplied
magnetic 1/4” NPTF drain plug on
the B&M Cast Aluminum Rear

End Cover and tighten.
STEP 15. Fill with factory

recommended gear oil using the

B&M Cast Aluminum Rear End
Cover fill plug hole. Add gear oil

until oil runs outs of the fill hole.
STEP 16. Install the supplied 1/2”
NPT fill plug on the B&M Cast

Aluminum Rear End Cover and
tighten.
STEP 17. Install and tighten any
other parts (e.g., sway bar, panhard
rod) if removed.

Owner’s Manual/Maintenance

Booklet recommends replacing
axle lubricant anytime axle is
submerged in water. (Refer to

Owner’s Manual/Maintenance

Booklet for details).