REPLACEMENT OF CAMSHAFT BUSHING-TYPE BEARINGS

(2) When necessary to replace defective

c . Piston Cooling Nozzles. Repair piston

camshaft bearings use remover and re-

cooling nozzles and main bearing cap screws

placer kit - 10899154 (fig. 25). This kit is

as outlined in paragraph 159b (6) through (8)

composed of a shaft, yoke assembly,

above. Remove burs with crocus cloth moistened

special washer, flat washer, plain nut,

with dry-cleaning solvent or mineral spirits

and several removers and replacers.

paint thinner.

Some of the removers and replacers

are dual purpose tools and are titled

d. Core Hole Plugs. Replace core hole plugs

"remover" or "replacer". The proper

showing evidence of coolant leakage. Install

remover or replacer can be determined

new core hole plugs.

by referring to Table IV, below. The

removal procedure is the same for all

161. REPLACEMENT OF CAMSHAFT BUSH-

four bearings. Replacement of the bear-

ING-TYPE BEARINGS

ing in the No. 2 position, adjacent to

main bearing number 3, has been se-

lected as typical.

a. Replace camshaft bushing-type bearings

which do not meet requirements specified in

b . Mark the location of the drilled hole in

repair and rebuild standards (par. 292). Re-

each camshaft bearing bore with chalk or grease

place damaged or worn camshaft bushing-type

pencil on web of crankcase. These marks can

bearings as follows:

be used as a guide to aline the oil hole when

installing new bearings.

Note. The crankcase is designed with seven

transverse webs for rigidity purposes. Each

c . Select remover and replacer - 10899146

web contains a seat for the seven replaceable

(fig. 328). Position the large diameter end of

main bearings, which are numbered 1 through

7, beginning at the front. The four camshaft

this dual purpose tool in the No. 2 camshaft

bearing bore from the rear of crankcase. Posi-

bearings are also located in the crankcase webs.

For orientation purposes, camshaft bearings

tion the unthreaded end of shaft - 10899139

are numbered 1, 2, 3, and 4, beginning at the

through camshaft bearing bores from the front

front. The camshaft bearing positions in rela-

until shaft is through far enough past bearing

tion to the main bearing positions as shown

being removed to expose the slot nearest the

unthreaded end. Install special "U" washer -

below.

10899144 in slot and push shaft and washer

forward against remover and replacer. Install

yoke assembly - 10899137, flat washer - 96906-

Main Bearing Cap

Corresponding Camshaft

15795-222, and plain nut - 96906-35690-1205 on

Position No.

Bearing Position Number

threaded end of shaft in the order named.

Tighten plain nut until yoke and remover and

replacer are properly seated. Slowly tighten

(oil transfer liner)

plain nut until bearing is removed from bore.

If necessary use a suitable pin through drilled

None

hole in the threaded end of the shaft to keep

it from turning (fig. 328).

None

d . Removal of remaining bearings will be

similar to the above. Select proper remover

and/or replacer from Table IV and remove

(1) An oil transfer liner, similar in ap-

bearings.

pearance and position to a camshaft

bearing, is located in the bearing web

e . Installation of the new camshaft bearing

which corresponds to main bearing

is accomplished in a similar manner; i.e.,

number 2. Its function is to direct

from the rear side of the bore. Select replacer

lubricating oil through the number 2

- 10899141 (fig. 329). Position new camshaft

web and into the main oil gallery.

bearing over replacer. Hold replacer and bear-

ing in position at the rear of the No. 2 bearing

Warning: This liner is not to be

bore, and insert shaft, "U" shaped washer,

disturbed or removed.

200