Installation Procedure -807640683

TM 9-2320-312-24-2

Truck Engine

Disassembly and Assembly Section

NOTICE

Care must be taken to ensure that fluids are contained

during performance of inspection, maintenance, test-

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

collect the fluid with suitable containers before open-

ing any compartment or disassembling any compo-

nent containing fluids.

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

g00611536

Illustration 173

mandates.

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Illustration 174

g00611536

Illustration 172

Bolt tightening sequence for the valve mechanism cover

(A) Rear

1. Remove breather assembly (2) from valve

(B) Front

mechanism cover (1).

1. Position valve mechanism cover (1) and the seal

2. Remove the bolts that hold valve mechanism

on valve mechanism cover base (3). Cut the seal

cover (1) to valve mechanism cover base (3).

to length. Apply 4C-9612 Silicone Sealant on

both sides of the seal joint.

3. Remove the seal from the valve mechanism

cover.

2. Install the bolts. Tighten the bolts in a

numerical sequence to a torque of 12 3 Nm

Installation Procedure

(106 27 lb in).

Note: Inspect the O-ring seal of the breather

NOTICE

assembly. Replace the O-ring seal, if necessary.

Keep all parts clean from contaminants.

3. Position breather assembly (2) on valve

Contaminants may cause rapid wear and shortened

mechanism cover (1). Tighten the bolt for

component life.

breather assembly (2) to a torque of 7 2 Nm

(62 18 lb in).