18 MAINFRAME ASSEMBLY HT220 SUPPLIED WITH FRAME (TO BE WELDED PRIOR TO ASSEMBLY) 11 12 6 13 VALID FOR BOTH SIDES 131 Z 10 CROSSMEMBER 4 A 1 "A-A" SECTION 10 131 Z 13 13 7 VALVE SUPPORT POSITION 2 P 2B Y Y MM L L Y Y MM L L Ar t. n r./Par t n o. XX V ON/ O FF Art. nr./P art n o. XX V ON/OFF 6 5 3 6 5 03 ID0183130 A 8 9