AIR COMPRESSOR - MIDLAND BRAKE MODELS EL-1 300, EL.1600
After connecting rod and piston assembly have
been removed, temporarily install bearing cap on
connecting rod from which cap was removed by loosely
installing rod bolts.
Position other rod at bottom of stroke by turning
crankshaft and remove rod and piston as previously
Remove piston pin snap rings from piston
assembly and press piston pin out of piston and
connecting rod. Then remove compression and oil rings
from piston using conventional piston ring expander.
Refer to Figure 7.
Figure 7 - Cross Section of Piston Assembly
Remove six bolts and lockwashers which secure cylin-
der block to crankcase; then separate cylinder block
from crankcase. Discard gasket.
CRANKSHAFT AND BEARINGS
Remove the four crankshaft bearing cap bolts on
each bearing cap and remove caps. Discard
Press the shaft seal from front bearing cap and
Remove seal and bowed washer or spring from
rear bearing cap.
IMPORTANT - Do not remove crankshaft and bearings
from crankcase unless an inspection
reveals the necessity for removal.
Place crankcase-crankshaft-bearing assembly in
an arbor press, supporting crankcase adjacent
to rear bearing. Use an adapter (shown in
Figure 8) and press crankshaft rear bearing
assembly from crankcase and out through rear
Figure 8 - Crankshaft Bearing Adapter
When rear bearing is free from case, use a
bearing puller and pull rear bearing from
Reinstall front bearing in bore of crankcase and
press shaft toward front of case. When front
bearing is free of crankcase, use the bearing
puller and remove front bearing from crankshaft.
Crankshaft can then be moved rearward and out
bottom of crankcase.
CLEANING, INSPECTION AND
Wash all parts thoroughly in clean solvent. Make sure all
carbon deposits are removed from pistons and cylinder
head. Be sure all drilled oil passages in crankshaft are
open. Clean all carbon from piston ring grooves in
If any of the components are not within the specified
limits as noted in SPECIFICATIONS in this Section, that
particular part must be replaced.
CTS-4077Y - Page 8