AVIM MAINTENANCE PROCEDURES
4-14. INTRODUCTION TO MAINTENANCE PROCEDURES (AVIM).
This section provides repair procedures for the Ground Handling Wheels Assembly, at the Aviation Intermediate
Maintenance (AVIM) level, authorized by the Maintenance Allocation Chart (MAC) provided in Appendix B. A model
number is included with the title of a procedure, unless the procedure applies to all models covered in this manual. The
Repair Parts and Special Tools List (RPSTL), in Appendix C, may be referenced to aid in identifying assemblies and
4-15. GROUND HANDLING WHEELS ASSEMBLY MAINTENANCE, Model 204-050-200-5 (AVIM).
The Ground Handling Wheels Assembly is group number 00 in the MAC. Maintenance performed on Ground Handling
Wheels Assembly, Model 204-050-200-5, at the AVIM level, consists of repair procedures. Repair procedures are
presented for the hydraulic pump assembly and cradle assembly. The wheel assembly is repaired at the AVUM level.
The inspection, replacement, and repair procedures at the AVUM level are contained In Chapter 3, Section V. Observe
all WARNINGS and CAUTIONS while performing the following repair procedures
4-15.1 Hydraulic Pump Repair, Model 204-050-200-5 (AVIM).
The Hydraulic Pump Assembly is group number 0101 in the MAC. Two types of hydraulic pump may be installed on
Ground Handling Wheels Assembly, Model 204-050-200-5. If an older version pump with part number BU0953B fails, it
is not repairable, but upon failure, shall be replaced by a pump with part number 61780. If the newer version pump with
part number 61780 fails, refer to paragraph 4-17.1 for repair procedures.