MAIN BEARING AND CRANKSHAFT REPAIR (CONT) -726030081

TM 9-2320-360-34-2

19-8.

MAIN BEARING AND CRANKSHAFT REPAIR (CONT)

c. Installation

CAUTION

Do not handle bearing shells and thrust bearings more than necessary for

installation. Sweat from hands may damage bearing shells and thrust bearings.

NOTE

Bearing surfaces are numbered 1

thru 5 from front to rear of engine

block. Repeat steps (1) and (2) for

four other main bearing surfaces.

(1) Align tab (1) on upper rear main bearing shell (2)

with slot (3) on bearing surface of engine block

(4).

CAUTION

Upper bearing shells have a through

slot for lubrication. Upper bearing

shells are Installed in cylinder block.

Failure to comply will block off oil

flow and damage to equipment may

result.

(2) install shell (2) on bearing surface of engine

block (4). Ensure both ends of shell are flush

with bearing cap mounting surfaces (5).

(3) Coat bearing shells (2) with oil after installation.

(4) Coat five crankshaft main bearing journals (6)

with oil.

WARNING

Crankshaft weighs 185 lb (84 kg).

Keep out from under crankshaft

when It Is supported by lifting device.

If crankshaft falls, serious Injury or

death may result.

(5) Attach lifting device (7) to crankshaft (8).

(6) Install crankshaft (8) while assistant operates

lifting device.

NOTE

Install thrust bearing with grooved

side toward crankshaft.

(7) Push crankshaft (8) to front and install rear main

thrust bearing (9). Push crankshaft (8) to rear

and install other rear main thrust bearing (9).

19-66