AIR COMPRESSOR REPAIR - CONTINUED
ASSEMBLY - CONTINUED
Ensure old gasket material is removed from mating surfaces of unloader cover plate and cylinder head.
Position new gasket (18) on cylinder head (13) and align bolt holes in gasket with bolt holes in cylinder head.
Ensure seal rings are not cut when pressing unloader pistons in bores, to prevent damage to equipment. DO
NOT allow old gasket material to drop in bores, to prevent damage to equipment.
Position unloader cover plate (17) on top of exposed unloader pistons (19). Press unloader cover plate carefully to press
unloader pistons in bores.
Hold down unloader cover plate (17) and install four new lock washers (16) and bolts (15). Tighten bolts to 175-225 lb-
in (20-25 Nm).
If beaded cylinder head gasket is used, install gasket with bead side toward cylinder head. Unbeaded
cylinder head gasket can be installed with either side up.
Ensure old gasket material is removed from mating surfaces of cylinder head and air compressor body.
Position new cylinder head gasket (14) on deck of air compressor (6).
Cylinder head should be positioned with air inlet and discharge flange on right side of air compressor when
viewed from rear.
Position cylinder head (13) on air compressor (6).
Install six bolts (12) and tighten bolts to 25-30 lb-ft (34-41 Nm).