* CYLINDER (Cont’d) Box Blade Ref. Part No. Number Description Remarks Serial Number Qty. Volume 8 Attachment Parts 16 1* 2* 3* 6678153 6679447 6679452 CYLINDER CASE NUT Ref. 2--13 1 1 1 4* 5* 6* NSS 6679450 NSS PSP SEAL PISTON O--RING 1 1 1 7* 8* 9* NSS NSS 6679451 O--RING BACKUP RING HEAD 1 1 1 10* 11* 12* NSS NSS 6679449 POLY--PAK DUST SEAL RETAINING RING 1 1 1 13* 14* 6679448 6679453 ROD SEAL KIT Ref. 4, 6--8, 10 & 11 1 1