| Item | Part No. | Part Name | Qty | Serial No. |
| 20G-61-31131 | CYLINDER ASSEMBLY | H55051- | ||
| (\2\20G-61-31130) | CYLINDER ASSEMBLY | H55051- | ||
| 1 | 20E-62-K9570 | CYLINDER | H55051- | |
| 2 | 20E-62-K9580 | PISTON ROD | H55051- | |
| 3 | 20E-63-K5280 | PISTON | H55051- | |
| 4 | 20E-63-K5290 | GUIDE | H55051- | |
| 5 | 20E-62-K9590 | CONTROL SPOOL | H55051- | |
| 6 | 20E-62-K6190 | VALVE SEAT | H55051- | |
| 7 | 20G-61-31140 | RELIEF VALVE | H55051- | |
| 7 | (\2\20E-63-K9560) | VALVE POPPET (CPLT.) | H55051- | |
| 8 | 20E-62-K6440 | VALVE POPPET | H55051- | |
| 9 | 20E-62-K6450 | SCREW PLUG | H55051- | |
| 10 | 20E-63-K5380 | BEARING | H55051- | |
| 11 | 20E-63-K5390 | CIRCLIP | H55051- | |
| 12 | 20E-63-K5410 | GREASE NIPPLE | H55051- | |
| 13 | 20E-63-K5110 | WIPER (KIT) | H55051- | |
| 14 | 20E-63-K5120 | RING (KIT) | H55051- | |
| 15 | 20E-63-K5130 | ROD WEAR RING (KIT) | H55051- | |
| 16 | 20E-63-K5140 | O-RING (KIT) | H55051- | |
| 17 | 20E-63-K5150 | BACK-UP RING (KIT) | H55051- | |
| 18 | 20E-63-K5160 | O-RING (KIT) | H55051- | |
| 19 | 20E-63-K5170 | RING (KIT) | H55051- | |
| 20 | 20E-63-K5180 | O-RING (KIT) | H55051- | |
| 21 | 20E-63-K5190 | BACK-UP RING (KIT) | H55051- | |
| 22 | 20E-63-K5210 | PISTON WEAR RING (KIT) | H55051- | |
| 23 | 20E-63-K5220 | O-RING (KIT) | H55051- | |
| 24 | 20E-63-K5230 | BACK UP RING (KIT) | H55051- | |
| 25 | 20E-62-K6630 | O-RING (KIT) | H55051- | |
| 26 | 20E-61-K2450 | BACK-UP RING (KIT) | H55051- | |
| 27 | 20E-62-K6640 | O-RING (KIT) | H55051- | |
| 28 | 20E-62-K6670 | PRESSURE SPRING | H55051- | |
| 29 | 20E-63-K5360 | GROOVE NUT | H55051- | |
| 30 | 20E-63-K5370 | SCREW | H55051- | |
| KIT | 20E-63-K5860 | SEAL KIT | H55051- |