This is a parts book, PB-2174, for Meritor Off-Highway Rear Carriers B36-3200F1904-XXX and B90-320001919-XXX. The B36 model is with a diff lock and the B90 model is without a locker. This revision is from October 2024.

The Table of Contents includes the following sections:

Carrier Mounting
Pinion Assembly
Main Differential Assembly
Differential Cases
Gear Sets
Differential Lock Assembly

Key Parts Information:
Carrier Mounting (Item 1): The part number for the carrier and cap without a differential lock is A2 320001919, and with a differential lock is A2 3200F1904.
Pinion Assembly: Includes parts like the Oil Seal – Input (120501017E), the Pinion Bearing Cage – Rui (322601084A01), and a Kit – Shim – Input Bearing Cage – Fui (KIT 2313). The Pinion Bearing Cage includes the inner (72487) and outer (55437) bearing cups.

Main Differential Assembly:

Main Diff Adjusting Ring Lock screw part number is 41X1637
The Main Diff Kit for 3200F1904 is KIT 2696, and for 320001919 is KIT 4882.
Components of the Main Diff Kit (KIT 4882 & KIT 4882) include the Side Gear (223401451), Thrust Washer – Main Diff Pinion (1229R1032), Spider – Main Diff (3278Y1117F), and Pinion Gear (2233X1116).
Differential Cases: Main Diff Case Assembly part numbers vary by ratio and whether they include a differential lock, covering ratios from 2.79 to 7.17.
Gear Sets: Available ratios range from 2.79 up to 7.17. The 3.73 ratio (B 41500 1) is replaced by the 3.70 ratio (B-43616-1R-370).
Differential Lock Assembly: The main kit is Kit – Main Diff Lock (KIT 2662), and a Kit – Diff Lock Shift Cylinder/Push Rod is KIT 2824.