Figure 5-173. Removing or installing main bearing attaching parts.

Remove

2. Cut locking w ire and remove four slotted nuts (B) and

two plate washers attaching main thrust bearing cap

Note. The main bearing caps are marked 1

(No. 4 or center) to crankcase assembly.

through 7 (front to rear) to identify their

Install

locations. Identifying numbers also appear on

N o t e . Do not install locking wire until bearing

bearing web in crankcase assembly. The caps are

cap nuts have been torque tightened (para 7-5c).

not interchangeable with each other and must be

1. Apply antiseize compound (FSN 9150-663-1770) and

returned to their original positions during in-

install two plate washers and four slotted nuts (B)

stallation.

securing main thrust bearing cap (No. 4) to crankcase

assembly.

Note. Do not use a scriber or other sharp

2. Apply antiseize compound (FSN 9150-663-1770) and

instrument for marking bearing halves. It is

install 12 plate washers and 24 slotted nuts (A)

recommended that a grease pencil be used for

securing main bearing caps, numbers 1, 2, 3, 5, 6, and 7

m a t - k i n g bearing halves.

to crankcase assembly.

1. Cut locking wire and remove 24 slotted nuts (A) and

12 plate washers attaching main bearing caps, numbers

1, 2, 3, 5,6, and 7 to crankcase assembly.

Figure 5-173. Removing or installing main bearing attaching parts.

5-100