| 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- | ||
| 708-23-15200 | SERVO VALVE SUB A.,FRONT | 3501- | ||
| (\7\708-23-07011) | BODY ASS'Y | 3501- | ||
| 1 | \6\ | BODY | 3501- | |
| 2 | \6\ | EXPANDER | 3501- | |
| 3 | (\7\708-25-15120) | PISTON | 3501- | |
| 4 | (\7\708-25-15130) | SEAT | 3501- | |
| 5 | (\7\708-23-15110) | SPRING | 3501- | |
| 6 | (\7\708-23-15120) | SEAT | 3501- | |
| 7 | (\7\708-23-15130) | SPRING | 3501- | |
| 8 | (\7\708-23-15160) | PLUG | 3501- | |
| 9 | (\7\708-25-15340) | SCREW | 3501- | |
| 10 | (\7\07000-02018) | O-RING | 3501- | |
| 11 | (\7\708-25-15150) | COVER | 3501- | |
| 12 | (\7\01580-10806) | NUT | 3501- | |
| 13 | (\7\708-25-15320) | BOLT | 3501- | |
| 14 | (\7\01602-20619) | WASHER,SPRING | 3501- | |
| 15 | (\7\708-25-15171) | PLUG | 3501- | |
| 16 | (\7\07002-02034) | O-RING | 3501- | |
| 17 | (\7\07239-12009) | NUT | 3501- | |
| 18 | (\7\07040-11007) | PLUG | 3501- | |
| 19 | (\7\07002-01023) | O-RING | 3501- | |
| 20 | (\7\708-25-15180) | SLEEVE | 3501- | |
| 21 | (\7\708-25-15280) | SPOOL | 3501- | |
| 22 | (\7\708-25-15310) | SPRING | 3501- | |
| 23 | (\7\708-25-15330) | SPACER | 3501- | |
| 24 | (\7\708-25-15430) | PLUG | 3501- | |
| 25 | (\7\07000-02012) | O-RING | 3501- | |
| 26 | (\7\708-25-15340) | SCREW | 3501- | |
| 27 | (\7\708-25-15250) | COVER | 3501- | |
| 28 | (\7\01580-10806) | NUT | 3501- | |
| 29 | (\7\708-25-15320) | BOLT | 3501- | |
| 30 | (\7\01602-20619) | WASHER,SPRING | 3501- | |
| 31 | (\7\708-25-15260) | PLUG | 3501- | |
| 32 | (\7\07002-00823) | O-RING | 3501- | |
| 33 | (\7\708-23-15150) | ARM | 3501- | |
| 34 | (\7\04205-00514) | PIN | 3501- | |
| 35 | (\7\04050-01210) | PIN,COTTER | 3501- |