AIR COMPRESSOR - MIDLAND BRAKE MODELS EL-1300, EL-1600NOTE -- Refer to ASSEMBLY, UNLOADER In thissection for reassembly procedures.Figure 4 - Unloader ComponentsCYLINDER HEAD1.Remove six head bolts attaching the head tocylinder block. Tap cylinder head with a softmallet to loosen head; then remove headassembly. Discard head gasket.NOTE - Refer to Figure 5 during the followingprocedures:2.If the unloader has not already been removed,position cylinder head on table and remove thetwo unloader cover bolts (Item 3) and washers.Remove unloader gasket (Item 1) and discard.Remove unloader pins and springs (Items 4 and6). Remove seals (Item 5) from unloader pinsand discard seals.3.Turn head over and remove exhaust valve seats(Item 11) using a 14mm (9/16 in.) Allen wrench.Remove exhaust valve (Item 10), washer (Item12), and spring (Item 9). Discard washer.CAUTION - THE EXHAUST VALVE STOPS AREPRESSED INTO THE CYLINDER HEAD. DO NOT AT-TEMPT TO REMOVE THEM. IF THEY AREDAMAGED, LOOSE, WORN, OR IF THE DISTANCEFROM THE EXHAUST VALVE STOP SURFACE TOTHE SPRING SEAT SURFACE EXCEEDS LIMITS IN-DICATED IN THE SPECIFICATIONS PORTION OFTHIS SECTION, THE COMPLETE HEAD ASSEMBLYMUST BE REPLACED.Figure 5 - Cross Section of Cylinder Head4.Remove inlet valve cages (Item 14) with valvecage tool SE-2613 as shown in Figure 6. Thenremove inlet valve springs (Item 15), inlet valves(Item 13), inlet valve seats (Item 16), andwashers (Item 12). Discard washers.Figure 6 - Removing Valve Cage Using ToolSE-2613PISTONS AND CONNECTING RODS1.Turn crankshaft so that one connecting rod is atbottom of stroke. Remove connecting rod, bolts andbearing cap (12-point 5/16 in. socket). Remove pistonand rod assembly from top of cylinder block.CTS-4077Y - Page 7
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