Operation Manual

Table Of Contents

Job Card No.:

Engine:

Filing No.:

Back bolt (10) through one turn. Connect hydr. pump

with hoses and operate pump to obtain the pressure

specified (Section 3.5, item 2). Introduce pin (13) -

Fig. 3 - through aperture in bush (8). If annular nut (4)

still resists turning, slowly raise oil pressure (10 to 20

bar).

Check by mirror when pumping that the mar-

king groove (Fig. 2) i n the piston will not

project beyond the cylinder.

Using pin (13), screw back nut (4) up to a little ahead

of clamping nut (7), which requires some (9) strokes

in the slot of bush (8) - Fig. 3 -. Take off oil pressure.

Disconnect hoses from tools. Remove tools and

push piston into cylinder until flush with the end. Fit

lever (27) - Fig. 4 -. Unscrew nuts (4) - Fig. 1 -. Lower

bearing cap onto a wooden board of about 10 mm

thickness in the oil sump.

Should cap (17) resist lowering, use spreader (16) -

Fig. 1 -. In this case, nuts (4) remain in situ. Release f

oundation bolts on the engine side having no fitted

studs and expand crankcase slightly with spreader

(16) by turning nut (18). Unscrew nuts (4) and lower

cap with lever (27) - Fig. 4 - onto a wooden board in

the oil sump, as described above.

Main Bearing

Removal

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S/BVM 628

Fig. 2

Fig. 4

Fig. 3