Service Manual

Table of Contents
Section Page
Foreword.............................................................................................................................. i
Description and Operation ................................................................................................ 1
Introduction .................................................................................................................................................. 1
General Description ..................................................................................................................................... 1
External Features BDP-10A ......................................................................................................................... 2
External Features BDP-16A ......................................................................................................................... 3
External Features BDP-21L ......................................................................................................................... 4
Hydraulic Schematic BDP-10A/16A ............................................................................................................. 5
Hydraulic Schematic BDP-21L ..................................................................................................................... 6
Graphical Schematic BDP-10A/16A/21L ...................................................................................................... 7
Technical Specifications BDP-10A/16A/21L ................................................................................................. 8
Product Identification ................................................................................................................................... 8
Safety .................................................................................................................................. 9
Personal Safety ........................................................................................................................................... 9
Tool Safety ................................................................................................................................................... 9
Work Area Safety ........................................................................................................................................ 9
Servicing Safety ........................................................................................................................................... 9
Troubleshooting ............................................................................................................... 10
BDP Flow Test Kit Instructions ............................................................................................................. 11,12
Service and Maintenance ................................................................................................ 13
External Maintenance ................................................................................................................................13
Service and Maintenance Procedures ........................................................................................................ 13
Fluids ........................................................................................................................................................ 13
Fluid Volume and Level .............................................................................................................................. 14
Fluid Change ............................................................................................................................................. 14
Filters ........................................................................................................................................................ 14
Purging Procedures ................................................................................................................................... 14
Repair ................................................................................................................................ 15
Tools and Torques ................................................................................................................................. 15,16
Input Shaft Seal BDP-10A/16A/21L ............................................................................................................ 17
Trunnion Arm Seal BDP-10A/16A/21L ........................................................................................................ 18
Check Valves BDP-10A/16A/21L ............................................................................................................... 19
System Check Reliefs or Shock Valves BDP10A/16A/21L ......................................................................... 20
Bypass BDP-10A/16A/21L ........................................................................................................................ 21
Charge Pump BDP-10A/16A/21L .......................................................................................................... 22,23
End Cap and Valve Plate BDP-10A/16A/21L ......................................................................................... 24-26
Cylinder Block BDP-10A/16A/21L ......................................................................................................... 27,28
Block Spring, Thrust Washer and Thrust Bearing BDP-10A/16A/21L.......................................................... 29
Swashplate and Cradle Bearings BDP-10A/16A/21L .................................................................................30
Input Shaft BDP-10A/16A/21L ............................................................................................................... 31,32
Trunnion Arm BDP-10A/16A/21L ................................................................................................................ 33
Notes ................................................................................................................................. 34
Parts List ...................................................................................................................... 35-40
Glossary of Terms ....................................................................................................... 41-42