Revised 10/2005 Out of Production Heavy Duty Axles

1 Heavy duty AxlesCatalog PB-9425 Strength y Pow er y Speed y AgilityM E R I T O R P A R T S. R I G H T F R O M T H E S T A R of ProductionRevised 10/2005 HOW TO USE THIS CATALOG This catalog contains the most popular carriers for Heavy duty , Out of Production assembly differences such as NoSpins, different differential nest assemblies, etc., arealso cataloged. These major assembly differences in a carrier are indicated by the differen tassembly level numbers in front of the base carrier number. The axle carrier chart at thebeginning of each model lists all the variations covered in this catalog. NOTE: The carriers listed in this catalog do notinclude yokes. A yoke is a major assembly difference. Therefore, a carrier sold with a yoke has a different assembly level number thanthe same carrier without the yoke.

2 SECTION 1 - The charts for carriers and housing components include the following information: An exploded view of each assembly, keyed to the parts list. A description of each part. Parts that are sold as assemblies that include other parts. The carriers or axle models the part is used on. The quantity of the part used on the carrier or axle . The part number for each part. SECTION 2 - Housing Components and Wheel End Parts: These charts cover the miscellaneous housing components and wheel end parts and are sequenced by modelnumber. SECTION 3 - axle Shafts: The shafts listed in this section are sequenced according tomodel designation. SECTION 4 - Drive Gear and Pinion Assemblies: This section lists all gear sets and ratios by model designation. SECTION 5 - Yokes and Flanges: These charts cover full round bearing yokes, wingbearing yokes, Easy Service yokes and flanges used on each axle model.

3 The yokes andflanges are listed by dimension by axle model. SECTION 6 - Service Kits: The kits are sequenced according to the kit number. Thecontents of each kit, the model designation and a brief description are listed. SECTION 7 - NoSpin Part Number Reference Chart: This chart lists the NoSpin part number for each corresponding axle model number. SECTION 8 - Numerical Parts Index: This section lists every part number and page(s) on which the part appears. LOCATION AND IDENTIFICATION OF MERITOR axle SPECIFICATIONS To correctly identify your axle model specification, there is an tag riveted on the rear of theaxle housing. When ordering replacement parts be sure to specify the model number and the ratio number stamped on the tag. SECTION 1 SECTION 4 Carrier Explodes & Parts ListsPageDrive Gear & Pinion AssembliesPageSFDD 4640.

4 1-2 SFDD 4640 ..4-2 SRDD ..1-10 SRDD ..4-2 STDD ..1-18 STDD ..4-2 SUDD ..1-26 SUDD ..4-3SR, SU, SW-170 ..1-34SR, SU, SW-170 ..4-4SR, SU, SW-270/280 ..1-44SR, SU, SW-270/280 ..4-5 SECTION 2 SECTION 5 axle Housing AssemliesPageYoke AssembliesPageSFDD 4640 ..2-2 SFDD 4640 ..5-2 SRDD ..2-3 SRDD ..5-3 STDD ..2-4 STDD ..5-4 SUDD ..2-5 SUDD ..5-5SR, SU, SW-170 ..2-6SR, SU, SW-170 ..5-6SR, SU, SW-270/280 ..2-8SR, SU, SW-270/280 ..5-6 SECTION 3 SECTION 6 PageAxle Shaft AssembliesPageService 4640 ..3-2 SRDD ..3-3 SECTION 7 STDD ..3-4 PageSUDD ..3-5 NoSpin Part Number Reference , SU, SW-170 ..3-6SR, SU, SW-270/280 ..3-7 SECTION 8 PageNumerical Parts of Production Heavy duty AxlesContents i TANDEM axle MODEL DESIGNATIONSDOUBLE REDUCTION GEARINGBASIC CAPACITYR -- 44,000 -- 50,000 -- 58,000 -- 65,000 AXLEREAR-RDR-REAR AXLECARRIER TYPE D -- Inter- axle diff. D -- Double F -- Less inter- axle diff.

5 Reduction Gearing P -- Pressurized lube system (pump) R -- Rear-rear axleTANDEM axle MODEL DESIGNATIONSSINGLE REDUCTION GEARINGBASIC CAPACITY STANDARD MODEL R -- 46,000/48,000 U -- 58,000 lbs. W -- 70,000 -- Inter- axle -- Rear-rear axleP -- Pressurized lube system (pump)TYPE OF DRIVE1 -- Hypoid Single-Reduction2 -- Double-Reduction ii SECTION 1 INDEXC arrier Explodes & Parts ListsPageSFDD 4640 ..1-2 SRDD ..1-10 STDD ..1-18 SUDD ..1-26SR, SU, SW-170 ..1-34SR, SU, SW-270/280 ..1-44 1-1 SFDD 4640 FAMILYTOP-MOUNTED, DOUBLE-REDUCTION TANDEM DRIVE UNIT(FORWARD-REAR CARRIER 3200-C-1225) 1-2 SFDD 4640 FAMILYFORWARD-REAR3200-C-1225 (Continued)DESCRIPTIONPART Differential carrier assembly (complete) , , , , , Less yoke. (For yokes, see SECTION 5) , , , , shaft11227-J-9462 Washer-thru shaft nut11229-T-17363 Yoke1 See SECTION 54 Oil seal-thru shaft (output)1A-1805-A-2615 Snap ring-bearing thru shaftAs 1536see SECTION 66 Washer-thru shaft brg.

6 Thrust11229-C-20577 Cup-bearing inner & outer2382A8 Cone-bearing inner & outer2385A9 (1), 7 Cage & bearing cage12297-A-702110 Capscrew-bearing cage6S-2612-211 Washer-brg. cage capscrew61229-K-159712 Shaft-thru13280-F-726013 Snap ring-inner & outer bearing21854-Z-20814 Bearing-rear radial11228-H-19015 Carrier top inspection cover13855-J-6215 AGasket-cover12808-T-722 Not shown16 Capscrew-inspection cover110-X-12549S-266-2 Contains thread locking adhesive17 Washer-cover capscrew101229-B-166618 Spacer-drive gear radial & ratios only19 Sleeve-drive bearing11821-N-1420 Bearing-drive gear radial11228-W-17921 (1)Drive gear & pinion SECTION 422 Dowel-bearing11846-Q-22523 (1),Diff. carrier & cap , 9924 Cover-cross shaft insp. hole11850-W-2325 Gasket-cover plug12808-G-189No Longer pinion cage cover6S-2916-228 Washer-spur pinion cage cover61229-Y-150729 Cover-cross shaft brg.

7 (pre-load). brg. retainer2S-2910-232 Retainer-cross shaft bearing11829-T-61833 Cup-cross shaft inner & outer shaft inner & outer , 33 Cage-cross shaft bearing1A-3826-T-228No Longer Available36 (1)Pinion-cross shaft & helical1 See SECTION 4 (1) Not serviced separately. 1-3 SFDD 4640 FAMILYFORWARD-REAR3200-C-1225 (Continued)ITEMDESCRIPTIONQTYPART pinion inner & outer pinion inner & outer pinionAs 520 See SECTION 642, 40 Case-inter- axle diff. "12297-N-1938 Not showndiff. "12297-P-194043 Plug-inter- axle diff. oil drain11850-T-15044 Plug-inter- axle diff. oil fill1P-11245, 46-55 Housing-shift assy. (complete)1A1-3280-D-2526No Longer Available46 Bolt-shift cover2S-268-247 Washer-shift cover21229-B-166648 (1)Shift 49 Gasket-shift housing12208-M-42950 Housing-shift13280-D-2526No Longer Available51 Lock ring-shift spring11229-W-124552 Washer-shift spring11229-B-166653 Spring-shift12258-U-41154 Nut-shift shaft bolt jam113-X-16355 Bolt-shift shaft to carrier4S-268-257 Washer-hsg.

8 To carrier41229-K-159758 Nut-adj. screw fork115-X-133061 Spring-shift fork12258-R-40862 Washer-shift fork anchor11229-M-159963 Fork-shift Longer Available64 Ball-shift fork11199-V-171265 Nut-bolt fork1NL-16-166 Washer-inter- axle case capscrew81229-C-151167 Capscrew-inter-short5S-2814-2axle diff. caselong3S-2816-268 Nut-pinion brg. brg. adj. nut11229-V-4870 Lock-pinion brg. jam nut11229-A-20971 Nut-pinion brg. jam11227-F-44872 Collar-inter- axle diff. clutch13280-V-249273 Bolt-inter- axle diff. case12S-2840-273 AThread locking liquid/diff. case12297-C-7049 See NOTE following parts list.(.34 oz. tube)73-86 Inter- axle diff. case & nest Longer Available74 Washer-inter- axle diff. case121229-C-151175 (1), 76 (1)Inter- axle diff. case Longer side gear thrust11229-Y-161178 Side gear-inter- axle diff. rear12234-G-319 (1) Not serviced separately. 1-4 SFDD 4640 FAMILYFORWARD-REAR3200-C-1225 (Continued)ITEMDESCRIPTIONQTYPART diff.

9 Pinion thrust41229-R-287882 Side gear-inter- axle diff. front12234-V-72483 Washer-inter- axle diff. front thrust11229-H-206284 Oil scoop-inter- axle diff. (baffle)13280-W-2493No Longer Available85 Washer-inter- axle diff. case121229-C-151186 Nut-inter- axle diff. case12NL-28-187 Cone-inner & outer input bearing239288 Cup-inner & outer input diff. housing12297-A-702191, 88 Housing-inter- axle diff. seal SECTION 594 Washer-input shaft11229-N-173095 Nut-input shaft11227-D-94096 Capscrew-inter-short7S-2711-2axle housinglong1S-2717-2No Longer Available97 Washer-inter- axle hsg. caplong4S-21432-299 Washer-diff. brg. cap capscrew81229-T-1554100 Ring-diff. brg. & bearing & bearing & (1)Case-diff. assy1A-3235-W-1401103-108 &Main diff. case & nest (1) Not serviced separately. 1-5 SFDD 4640 FAMILYFORWARD-REAR3200-C-1225 (Continued)ITEMDESCRIPTIONQTYPART (2)Washer-diff.

10 Side gear thrust21229-C-991105 (2)Side gear-diff. & as KIT 2002,106 (2)Washer-diff. pinion thrust41829-Q-95see SECTION 6107 (2) (2)Spider-main spur1 See SECTION 4110 AThread locking liquid/diff. oz. tube. See NOTE case1615-X-1458 Available as KIT case16NL-19-1 See SECTION 6112 Washer-diff case bolt161229-Y-2443 (2) Not used with NoSpin : THREAD LOCKING LIQUID/DIFFERENTIAL CASE HALVESWhen assembling differential case halves in Meritor Axles , a thread locking adhesive should be recommended procedure is as excess oil and residue from the threaded holes in the case. The holes should be relatively oil new bolts are being used, a yellow coating of Dri-Loc should appear on the threads. Assemble thecase with these coated bolts to the required the original bolts are reused or regular bolts without Dri-Loc are used, Meritor part no. 2297-C-7049should be used as a thread locking adhesive.