Camshaft - Install

TM 9-2320-312-24-2

Truck Engine

Disassembly and Assembly Section

Note: The air compressor was removed in order to

i01747719

accommodate the engine repair stand.

Camshaft - Install

1. Turn the crankshaft to top center compression

SMCS Code: 1210-012

stroke for the No. 1 piston. Install the timing

bolt in the flywheel. This is for timing during

Installation Procedure

installation.

2. Ensure that the timing marks on the following

NOTICE

gears are aligned: the camshaft drive gear, the

Care must be taken to ensure that fluids are contained

idler gear, and the crankshaft gear.

during performance of inspection, maintenance, test-

ing, adjusting and repair of the product. Be prepared to

Note: It is not necessary to remove the cylinder

collect the fluid with suitable containers before open-

head for removal of the camshaft.

ing any compartment or disassembling any compo-

nent containing fluids.

3. Wire the valve lifters away from the camshaft.

Refer to Special Publication, NENG2500, "Caterpillar

Tools and Shop Products Guide" for tools and supplies

suitable to collect and contain fluids on Caterpillar

products.

Dispose of all fluids according to local regulations and

mandates.

NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened

component life.

g00611074

Illustration 200

4. Remove two bolts (3) and camshaft retainer plate

(2) from camshaft gear (1).

g00611082

Illustration 202

Typical example

Note: The air compressor was removed in order to

accommodate the engine repair stand.

1. Carefully install camshaft (4) in the cylinder

block.

NOTICE

When installing the camshaft, make sure the num-

g00611082

Illustration 201

ber one cylinder is at top center of the compression

stroke with the timing bolt installed in the flywheel. The

5. Remove camshaft (4) from the cylinder block.

camshaft timing is very important. The timing mark

on the camshaft drive gear must line up with the tim-

ing mark on the idler gear. Refer to the Specifications

Manual for more information.