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4.3.10 Assembly – Crankcase (CRA-3603)
Crankcase Assembly Procedures
Clean inspect and oil all components
Ensure 1/8 Dry Seal plugs are fitted into 2
locations on crankshaft.
(*)
I. Fitting Main Bearing to Crankshaft
1
Heat bearings for 2 hrs to 110
o
C
2
Place
∅
160 internal circlip over drive end
of crankshaft and slide bearing onto this
journal. C3 Type.
Minimum bearing clearance 0.0015”
Ensuring that it is hard against the
crankshaft shoulder.
This is best achieved by having the
crankshaft in a vertical position.
3
When the drive end bearing is cool
enough so that it is locked onto the
crankshaft, stand the crankshaft on the
drive end and fit the main bearing to the
oil pump end of crankshaft. C4 Type.
Minimum bearing clearance 0.0015”
(*)
II. Assemble Drive End Bearing Housing
1
Fit the O ring (ORN-7240) into the grove
on the bronze metering plate and lightly
lubricate with grease
2
Press metering plate into the metering
plate retainer.
From the side that has the lead in chamfer
(*)
3
Assemble oil pressure relief value into its
hole, by inserting the shuttle, spring then
retainer (with O ring fitted then backup
ring), locate in place with retaining bolt
and adjust screw.
All items to be lubricated before
assembly.
USE LIGHT SPRING. CR-3334
(*)
4
Fit plug (8HP50N-S) to bottom drilling
and hollow hex head plug to (6HP50N-S)
into outer seal cover face.
Ensure the Hollow Hex Plug is inserted
below flush.
(*)
5
Tap 1/8 x ¾”long roll pin into the hole at
top face of bearing diameter bore.
(*)
6
Place metering plate/retainer assy inside
bore of CR-3531 housing so that the roll
pin locates in the hole in the retainer.
7
Fit this housing assembly to the
crankshaft and locate with circlip, which
is to be fitted to the groove inside CR-
3531 housing.
(*)
III. Install Crankshaft into Crankcase
1
The crankcase is to be clean and inspected
for damage
(*)
2
Insert oil tube into bottom of crankcase.
Fitted O ring in recess on end of tube.
Ensuring plastic hose is fitted over the
tube between bulkheads and webs of
crankcase.
(*)
Intermech Ltd. BBR-6015-2 Compressor Service Manual
