Sunbeam ALPINE I SERIES: APLINE II SERIES, Workshop Manual

Page: 54 / 413

Page 16
INLET
INLET
EXHAUST EXHAUST
INLET
INLET
WSM.114
Section B (Engine)
4786
EXHAUST
EXHAUST
Fig. IS.
Plan view of valve rocker gear
No. I exhaust is adjusted when No. 4 exhaust
is fully open.
No. 2 inlet is adjusted when No. 3 inlet is fully
open.
No. 3 exhaust is adjusted when No. 2 exhaust
is fully open.
No. I inlet is adjusted when No. 4 inlet is fully
open.
PUSH RODS
To remove and refit
The correct push rods for these engines are the tubular
type,
the diameter of which Is given In the Data Section.
Remove rocker cover.
Remove rocker shaft assembly.
When removing push rods make sure that the
tappets are not pulled out of their bores. A sharp
tap on the side of the push rod will normally break
the oil film on the ball end.
When push rods have been replaced, reset the
valve clearances and recheck clearance when the
engine is HOT.
TAPPETS
To remove
Remove rocker cover, rocker shaft assemblies, and
push rods.
No. 4 exhaust is adjusted when No. I exhaust
Is fully open.
No. 3 inlet is adjusted when No. 2 inlet is fully
open.
No. 2 exhaust is adjusted when No. 3 exhaust
is fully open.
No. 4 inlet is adjusted when No. I Inlet is fully
open.
Remove engine side cover, as follows:-
Drain oil filter (one small hexagon-headed plug
adjacent to the two large plugs in the boc:ly).
Remove container and element. Remove dis­
tributor. Remove Ignition coll. Take out
screws securing side cover and remove cover.
Lift out tappets. Tappets should be numbered
in pencil on removal so that they can be re­
placed in their original positions.
Tappet faces in contact with the cams should
be free from pitting and wear. Regrinding of
the tappet faces Is not recommended as It
reduces the thickness of the hardened face.
Refitting is a straightforward reversal of the
above procedure. Note that the tappets sh�uld
be replaced in the bores from which they were
removed.
•
._)