| Item | Part No. | Part Name | Qty | Serial No. |
| (708-23-01070) | PUMP ASS'Y (HPV55+55) | 3501- | ||
| (708-23-07121) | SERVO VALVE ASS'Y,FRONT | 3501- | ||
| 708-23-07720 | VALVE ASS'Y,T.V.C | 3501- | ||
| (\7\708-23-07051) | BODY ASS'Y | 3501- | ||
| 1 | \6\ | BODY | 3501- | |
| 2 | \6\ | PLUG | 3501- | |
| 3 | \6\ | HOLDER | 3501- | |
| 4 | (\7\708-23-18120) | PISTON | 3501- | |
| 5 | (\7\708-23-18130) | SLEEVE | 3501- | |
| 6 | (\7\708-25-18120) | PISTON | 3501- | |
| 7 | (\7\708-23-18150) | SLEEVE | 3501- | |
| 8 | (\7\07000-12016) | O-RING | 3501- | |
| 9 | (\7\07001-02016) | RING,BACK-UP | 3501- | |
| 10 | (\7\708-23-18161) | SPOOL | 3501- | |
| 11 | (\7\708-23-18170) | SEAT | 3501- | |
| 12 | (\7\708-23-18181) | SPRING | 3501- | |
| 13 | (\7\708-23-15160) | PLUG | 3501- | |
| 14 | (\7\708-25-15340) | SCREW | 3501- | |
| 15 | (\7\07000-02018) | O-RING | 3501- | |
| 16 | (\7\708-23-18210) | COVER | 3501- | |
| 17 | (\7\01580-10806) | NUT | 3501- | |
| 18 | 708-23-18221 | SOLENOID ASS'Y | 3501- | |
| 19 | 07000-02016 | O-RING | 3501- | |
| 20 | 708-23-18250 | BOLT | 3501- | |
| 21 | (\7\708-25-15320) | BOLT | 3501- | |
| 22 | (\7\01602-20619) | WASHER,SPRING | 3501- |