4 Prepare Parts for Assembly
19
Meritor Maintenance Manual MM-15103 (Issued 07-17)
Figure 4.7
5. Remove nicks, marks and burrs from parts with machined or
ground surfaces. Use a fine file, india stone, emery cloth or
crocus cloth.
6. Clean and repair threads of fasteners and holes. Use a die, a
tap of the correct size, or a fine file.
Repair Welding on Axle Housings
For Complete Welding Instructions on Meritor Drive
Axle Housings
Refer to Maintenance Manual 8, Drive Axle Housings. To obtain this
publication, refer to the Service Notes page on the front inside cover
of this manual.
Removal
Fasteners Secured with Adhesive
If it’s difficult to remove fasteners secured with Dri-Loc
, Meritor
specification 2297-T-4180 or Loctite
277 adhesive, use the
following procedure.
When you remove fasteners secured with adhesive, slowly
heat the fastener to 350°F (177°C). Do not exceed this
temperature, or heat fasteners quickly. Damage to
components can result.
1. Heat a fastener for three to five seconds only. Try to loosen the
fastener with a wrench. Do not use an impact wrench or hit the
fastener with a hammer.
2. Repeat Step 1 until you can remove the fastener.
Installation
Fasteners
New Fasteners with Pre-Applied Adhesive
NOTE: No drying time is required for fasteners with pre-applied
adhesive.
1. Use a wire brush to clean oil and dirt from threaded holes.
2. Install new fasteners with pre-applied adhesive to assemble
parts. Do not apply adhesives or sealants to fasteners with
pre-applied adhesive, or to fastener holes.
3. Tighten fasteners to the required torque value for that size
fastener.
Original or Used Fasteners Using Meritor Liquid
Adhesive 2297-M-5213, Loctite
277 or 270
Adhesive, or Equivalent
Take care when you use Loctite
adhesive to avoid serious
personal injury. Read the manufacturer’s instructions before
using this product. Follow the instructions carefully to prevent
irritation to the eyes and skin.
1. Use a wire brush to clean the oil, dirt and old adhesive from all
threads and threaded holes.
2. Apply four or five drops of Meritor liquid adhesive, Loctite
277
or 270 adhesive, or equivalent, inside each threaded hole or
bore. Do not apply adhesive directly to fastener threads.
Figure 4.8.
NOTE: There is no drying time required for Meritor specification
2297-K-5523 liquid adhesive, Loctite
680 adhesive, or equivalent.
3. Tighten the fasteners to the required torque value for that size
fastener.
Figure 4.8
Figure 4.7
Remove silicone
gasket from parts.
1003023a
Figure 4.8
1003025a
FOUR TO
FIVE DROPS
ON BORE
THREADS
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