NHTSA ID Number: 10203565
Manufacturer Communication Number: MERITOR
TP 15123
TSB/Document Date: 2021-11-15
Summary
Coverting unitized wheel ends to conventional hub bearings and wheel ends on Merito coach front and tag axles
Diameters up to 1.75″
60-80
82-109
5
Standard Tie Rod End Nut
7/8"-14
160-215 (up to 320
maximum1)
217-291 (up to 433
maximum1)
6
Draw Key
7/16"-20
30-55
41-75
7
0.125"-27
10 Minimum
14 Minimum
0.375"-16
12-18
16-24
15-25
20-34
2
Not shown
Not shown
Filler Plug
1
Maximum to align the holes for the cotter pin. Refer to the tie rod cotter pin assembly procedure in this section.
2
Refer to the hubcap bolt tightening procedure in this section.
(16579)
Printed in USA
Copyright Meritor, Inc., 2016
TP-15123
Issued 01-16
Page 25
FH and MC Series Wheel-End Components
Table L: Wheel-End Torque Specifications
Axle Model
Bolt Joint
Fastener Size
Torque Lb-Ft
Torque N폷m
FH Series
Torque Plate-to-Knuckle
0.75 x 16
310-400
420-540
MC14MC16
Torque Plate/Spindle/Frame Flange
0.75 x 10
326-420
440-570
FH and MC Series
EX+H Carrier-to-Torque Plate Bolts
M20 x 1.5
350-450
475-610
FH and MC Series
Rotor-to-Hub Attachment
0.625–18
155-195
210-265
FH and MC Series
0.375-16
12-18
16-24
FH and MC Series
Hub Cap Filler Plug
—
15-25
20-34
* Tighten bolts in a star pattern, repeat pattern to verify. Re-check torques every 30,000 miles, or before.
** Assemble PRO-TORQ™ nut with anti-seize compound on the threads.
Table M: FH and MC Series Axles — Conventional Wheel-End System Torque Specifications
Axle
Initial Adjusting
Nut Torque1
Final Adjusting
Nut Torque2
Spindle Thread
Diameter
Jam Nut Torque
Specification
Acceptable End
Play Range2
Front
non-drive
steer axles
150 lb-ft
(203 N폷m) Back off
1 turn
50 lb-ft (68 N폷m)
Over 1-1/8"
(28.6 mm), less
than 2-5/8"
(66.67 mm)
200-300 lb-ft
(272-408 N폷m)
0.001"-0.005"
(0.025-0.127 mm)
Back off 1/4 turn
for 1-3/4"
(44.45 mm) and
over
NOTE: For disc brake wheel ends, back off the brake caliper until the rotor is clear from the pad linings about 1/16-inch (1.588 mm) gap or
more. Refer to Maintenance Manual MM-0467, EX+™ Air Disc Brake, for more information. To obtain this publication, visit Literature on
Demand at meritor.com.
1
2
Rotate the hub a minimum of five complete turns while tightening the nut.
The nut may need to be slightly tightened or loosened to meet the required end play.
Appendix
Table N: Wheel-End Oil Change Intervals and Specifications
Outside Temperature
On-Highway Operation Intervals
°F
°C
Check Oil
Level
Petroleum Oil
Change
Meritor
Specifications
Military
Specification
Oil Description
Min.
Max.
Min.
Max.
1,000 miles
(1600 km)
Whichever comes
first:
O-76A Gear Oil
MIL-L-2105-D
GL-5, SAE 85W/140
10
None
12
None
O-76D Gear Oil
GL-5, SAE 80W/90
–15
None
–26
None
Seals replaced
O-76E Gear Oil
GL-5, SAE 75W/90
–40
None
–40
None
Brakes relined
O-76J Gear Oil
GL-5, SAE 75W
–40
36
–40
2
30,000 miles (48
280 km)
Heavy-Duty Engine
Oil
MIL-L-2104-B,
-C, -D or -E
A.P.I. -CD, -CE, -SF
or -SG SAE 40 or
501
10
None
12
None
Heavy-Duty Engine
Oil
MIL-L-2104-B,
-C, -D or -E
A.P.I. -CD, -CE, -SG,
-SH or -SJ SAE 302
–15
None
–26
None
Twice a year
1
2
Current designations are acceptable. Multi-grade engine oils are acceptable if the SAE rating ends in 40 or 50.
Current designations are acceptable. Multi-grade engine oils are acceptable if the SAE rating ends in 30.
TP-15123
Issued 01-16
Page 26
Copyright Meritor, Inc., 2016
(16579)
Printed in USA
Table O: Front Non-Drive Axle Inspection and Greasing Intervals and Specifications
2
NLGI
Grade
ECL1 TEK-678
or
Multi-Purpose
Grease
O-704 or
O-617-A
2 or 1
O-617-B
2
Inspect every
50,000 miles (80
000 km) or once a
year, whichever
comes first
—
—
Grease whenever
service is
performed
ECL1TEK-678
O-704
Interval
King Pins and
Bushings
Grease every
50,000 miles
(80 000 km) or
once a year,
whichever comes
first
Non-greasable
Perma-Lube Tie
Rod Ends
Brake
Components
Ball Studs on
Steering Arm,
Tie Rod Ends,
and Drag Link2
1
Meritor
Specification
Component
Grease Type
Outside
Temperature
Lithium 12
Hydroxystearat
e, Calcium
Sulphonate
Complex or
Lithium
Complex
Refer to the
grease
manufacturer’s
specifications for
the temperature
service limits.
—
—
—
2
Calcium
Sulphonate
Complex
−40/+150° C
(preferred)
Meritor standard grease is now available from Engineered Custom Lubricants, 45800 Mast Street, Plymouth, MI 48170, 866-836-3871, www.ecllube.com.
Applies to ball studs on Easy Steer Plus™ axles. Sealed axles require inspection of the boot on the ball stud every 100,000 miles (160 000 km) for wear and
damage. Service as necessary.
Special Tools
Description
Kent-Moore Tool Number1
Owatonna Tool Number2
Snap-On Tool Number3
King Pin Remover
J 36136
4240
20 Ton: CG430HYB
35 Ton: CG730HY
1
2
3
Obtain Kent-Moore tools from: SPX Service Solutions, 28635 Mound Road, Warren, MI 48092, Phone 866-621-2128, www.servicesolutions.spx.com
Obtain Owatonna tools from OTC Toll and Equipment Division, 655 Eisenhower Drive, Owatonna, MN 55060.
Refer to your local Snap-On dealer.
(16579)
Printed in USA
Copyright Meritor, Inc., 2016
TP-15123
Issued 01-16
Page 27
Figure 51
8.62
2.63
2.25
1.68
0.12
0.06 R (TYP)
45°
.12 X 30
.25 R
0.25 R
0.12 R
0.25 DIA.
3.00
DIA. 2.00
DIA.
2.25
DIA.
KNURL
0.12
2.9970
DIA.
2.94
DIA.
5.40
DIA.
4.32
DIA.
6.00
DIA.
6.38
DIA.
.12 R
5.12
0.50
0.12 X 30° (TYP)
1.25
1.75
3.00
3.62
9.62
4012341a
HUB SEAL DRIVER — TOOL NUMBER 911358 DET 21
Figure 51
Meritor Heavy Vehicle Systems, LLC
2135 West Maple Road
Troy, MI 48084 USA
866-OnTrac1 (668-7221)
meritor.com
Information contained in this publication was in effect at the time the publication was approved for printing and is subject to
change without notice or liability. Meritor Heavy Vehicle Systems, LLC, reserves the right to revise the information presented or
to discontinue the production of parts described at any time.
Copyright 2016
Meritor, Inc.
All Rights Reserved
Printed in USA
TP-15123
Issued 01-16
(16579)
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TSB/Document ID: MERITOR TP 15123
Replacement Service Bulletin Number:
MFR Communication Date: 2016-01-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: WHEELS
MFR Component System:
MFR Component Subsystem:
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