(Serial # 7-512501 & higher)
Identify your part using this line drawing of the Hydraulic Unit.
- CR 44521-012 Handle Assembly 
CR 144546-012 Handle Assembly, S/N 7-635878 & Higher - CR 50000-012 Roll Pin
 - CR 46235 Roller Axle
 - CR 55084-001 Bushing
 - CR 46236 Roller
 - CR 55084-003 Bushing
 - CR 44531 Roll Pin
 - CR 44527 Control Rod
CR 144545 Control Rod (Serial Number 7-635878 and higher) - CR 44586 Insert
 - CR 79918 Spring
 - CR 50005-002 Screw
 - CR 44535 Chain Connector
 - CR 46128 Chain Assembly
 - CR 46127 Master Link
 - CR 44600 Lever Actuator
 - CR 55001-007 Ball
 - CR 41292 Spring
 - CR 46234 Ram
 - CR 54001-008 Scraper
 - CR 50012-025 Snap Ring
 - CR 41165 Ram Cylinder
 - CR 54015-001 U-Cup
 - CR 41181 Filler Plug
 - CR 50011-010 Washer
 - CR 44456 Spring
 - CR 816819 Control Piston
 - CR 818263 O-Ring
 - CR 818261 Wiper
 - CR 50000-070 Roll Pin
 - CR 816818 Pin, Serial #7-512501 - 7-635877
CR 144080 Camshaft, Serial #7-635878 & Higher - CR 818252 Pump Cartridge Assembly
 - CR 819180 Kit: 3 O-Rings & 2 Backuprings
 - CR 44452 Washer
 - CR 44570 Spring
 - CR 54001-009 Scraper
 - CR 54015-005 U-Cup
 - CR 816815 Pump Cylinder
 - CR 818262 Back-Up Ring
 - CR 818260 O-Ring
 - CR 50012-033 Snap Ring
 - CR 816816 Pump Piston
 - CR 816814-001 Pump Assembly
 - CR 44499 Steer Wheel Axle
 - CR 50000-039 Roll Pin
 - CR 065081-020 Bearing
 - Steer Wheel Assembly Options
 - CR 50012-021 Snap Ring
 - CR 44437 Hub Cap (OEM Wheel Only) 
CR 44437-1 Hub Cap (GPS Wheel Only) 
Kits:
- CR 819934 Seal Kit
 - CR 44527-A Rod and Chain Assembly (Incl Item 8 - 16)