Specifications

Assembly and Installation
74 MAINTENANCE MANUAL
CAUTION
INSPECT THE AXLE BREATHER FOR CON-
TAMINANTS, SUCH AS DIRT, LUBRICATION
OR DEBRIS, WHICH CAN CAUSE PRESSURE
TO BUILD INSIDE THE AXLE. DAMAGE TO
THE SEAL AND PREMATURE SEAL LIP WEAR
CAN RESULT. REMOVE THE AXLE BREATH-
ER. USE A SAFE CLEANING SOLVENT TO
CLEAN THE INSIDE AND OUTSIDE OF THE
BREATHER.
3. Inspect the axle breather for contaminants,
such as dirt, lubrication or debris.
• If you nd contaminants in the axle breather,
remove the axle breather. Use a safe cleaning
solvent to clean the inside and outside of the
breather.
4. Remove the replacement unitized seal from
the package. Figure 5.94.
CAUTION
IF A FORK IS REMOVED AFTER IT HAS
BEEN PARTIALLY OR FULLY INSTALLED,
THE UNITIZED PINION SEAL WILL BE DAM-
AGED. REMOVE AND DISCARD THE ORIGI-
NAL UNITIZED PINION SEAL AND REPLACE
IT WITH A NEW ONE.
If a fork has been installed into the unitized pin-
ion seal and then removed, the inner sleeve of the
seal will be damaged. Install a new seal.
5. Select the correct seal driver from Table K.
Each seal driver is designed to correctly install
aspecicdiameterseal.Todeterminethefork
sealdiameter,measuretheforkjournal.Toob-
tain the Meritor seal driver KIT 4454, See thet-
he Service Notes page on the front inside cover
of this manual.
INTEGRATED
SEAL
Simple Models Tandem Models
Meritor´s Unitized
seal
Local Installation Seal
Meritor´s In-
stallation Tools
Diameter
Seal - inch
MX-21-160 RT-34-144/P
A-1205-R-2592
Input of the previous dif-
ferential. Tandem - 145
models - November 1993
to present.
R4422402
3.250
3.255
MX-23-160R RT-34-145/P
RF-16-145 MT-40-143
RF-21-160 RT-40-145/A/P
A-1205-P-2590
Output of the previous dif-
ferential Tandem - Input
of the previous differen-
tial Tandem 145 models
before November 1993
with seal A-1205-F-2424.
R4422401
3.000
3.005
RT-22-166 RT-40-149/A/P
RF-23-185 RT-44-145/P
RS-17-145 RT-40-160/A/P
RS-19-145 RT-46-169/A/P
RS-21-145 RT-46-160/A/P
A-1205-N-2588
Sigle axis input and previ-
ous Tandem – 145 models
R4422401
3.000
3.005
RS-21-160 RT-46-169/A/P
RS-23-160/A RT-46-16HEH/P
A-1205-Q-2591
Sigle axis input and
previous Tandem –
160/164/185 models
R4422402
3.250
3.255
RS-23-161/A RT-46-16HEH/P
RS-25-160/A RT-50-160/P
RS-23-186 RT-52-160/P
RS-26-185 RT-58-1851
RS-30-185
Figure 5.94