16
Page Betico SB1 Compressor Assembly Manual
Page
Betico SB1 Compressor Assembly Manual
Page 2
Equipment required. • Compressor manual.
• Circlip pliers.
• 1/2” rattle gun.
• Allen keys; 5, 8, 10mm
• Metric socket set.
• Short extension bar.
• Long extension bar.
• Torque wrench.
• Piston ring compression tool.
• Gudgeon pin hone tool.
• High speed drill.
• Rubber mallet.
• Oil gun.
• Spanners 10, 11, 18, 19, 21, 22, 27 & 29mm
• Oil brush & pot.
• Bearing heater or oven.
• Press Brake.
Page 3
Set piston square in press brake.
Remove gudgeon pin circlips. Press gudgeon pin out of piston.
Press new gudgeon bush in con rod.
Page 4
Heat pistons to 100°C on hot plate or in an oven.
Hone out new gudgeon bush un-til new gudgeon pin fits neatly.
Page 5
When piston is at 100°C fit con rod and new gudgeon pin. Fit both circlips. Cool piston with compressed air.
Lubricate oil gallery.
Heat main bearings to 120°C.
Page 6
Fit washer (4002139) & plug (4070102) in crankshaft.
Shrink fit main bearings on crankshaft. Then cool with compressed air.
Page 7
Fit bolt & washer in crankcase housing. (If applicable)
Fit oil return elbow in crankcase cover.
Lubricate main bearing housing & bush in crankcase cover.
Page 8
Fit oil strainer & gasket in crank-case.
Lubricate main bearing housing in crankcase.
Page 9
Press crankshaft into crankcase.
Fit oil pump drive gear to crank-shaft.
Page 10
Fit crankcase cover gasket.
Lubricate both main bearings.
Place crankcase cover in posi-tion. Fit two bolts to locate holes.
Page 11
Press crankcase cover on.
Secure all bolts. Check crank turns freely.
Page 12
Fit new big end bearing shells; • Standard • 0.5mm • 1.0mm sizes available
Torque con rod bolt/nuts.
Fit piston rings. Taper on rings to top. Locate piston ring end gaps; Top ring - 12 o’clock Middle ring - 4 o’clock Bottom ring - 9 o’clock
Page 13
Lubricate piston rings.
Compress piston rings.
Page 14
Fit cylinder studs. (short thread into crankcase) Fit o ring in bottom of cylinders. Ensure ribs in cylinder and aligned with studs.
Push cylinder onto piston. Do not twist cylinder when push-ing barrel on. This will move ring end gaps.
Fit o ring in top of cylinders. Fit cylinder heads & torque nuts Check piston to head clearance. Should be 1-2mm. Check crank turns over freely.
Page 15
Fit outlet manifold with new o rings & douty seal washers.
Fit copper washers.
Fit valves in head, inlet to bot-tom.
Page 16
Fit o rings and apply rubber grease.
Fit valve retainers. Ensure legs do not obstruct ports in cylinder head.
Fit valve retainer spider and torque nut & studs.
