SEARCHLIGHT WILL NOT ROTATE OR ELEVATE

Custom Search

TEMPERATURE RISES

TM-55-1925-204-12 TUG Harbor Diesel 1200 H. P. Steel 100 Ft Design 3006 Flight One FSN 1925-375-3003 Manual

Figure 3-1. Cylinder head removal and installation.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

2. SEARCHLIGHT WILL NOT ROTATE OR ELEVATE.

Step 1. Check If linkage is bent.

Straighten.

Step 2. Check if stuffing box is dry.

Lubricate in accordance with LO 55-1925-204-12-1.

16 GROUP-FIXED CO2 SYSTEM

1. CO2 SYSTEM INTERLOCK DOES NOT TRIP VENTILATING MOTORS ON TEST.

Step 1. Check for faulty interlock

Replace.

2. CABLE DOES NOT TRIP LEVER ON TEST

Step 1. Check if cable is broken.

Replace cable

17 GROUP-WHISTLE/HORN

WHISTLE DOES NOT SOUND WHEN LANYARD IS PULLED.

Step 1. Check for no air.

Move air supply valve to Open Check lanyard operated pilot valve. Replace defective valves.

WEAK SOUND

Step 1. Check for low air pressure.

Check the compressed air system from the 250-100 P & I Reducing Station (fig. 2-14).

Step 2. Check for a cracked diaphragm.

Replace the diaphragm

HORN DOES NOT OPERATE.

Step 1. Check for loose electrical connections.

Tighten all loose connections.

Step 2 Check for no power.

Trace out circuit. Repair if necessary.

BUTTON DOES NOT OPERATE.

Step 1. Check for loose connection under horn button.

Tighten all electrical connections.

Section IV. MAINTENANCE PROCEDURES

b. Removal. To remove the cylinder head proceed

3-5. General

as follows:

This section will cover those maintenance functions

(1) Drain

engine

cooling

system

and

assigned crew by the MAC. These functions do not

expansion tank by opening drain valve located below

appear elsewhere in this manual. Crew functions within

exhaust manifold on right side of engine.

MAC groups, where organizational maintenance is

involved, are described in chapters 4 and 5 below.

NOTE

It is good practice to remove valves

Due to the mission of this vessel

from cylinder head before pulling

(operation in remote area) functions

head.

normally involving organizational

(2) Back off capscrews and lift bracket

holding fuel line to cylinder head off the head.

maintenance may be performed at

CAUTION

operator/crew level.

Wrap ends of all fuel oil lines with a

clean cloth to prevent dirt from

3-6. Cylinder Head Assembly

entering, as damage may result.

a. General. The cylinder heads are made of cast

(3) Disconnect fuel pressure line (fig. 3-1)

iron and are water cooled. Each is an individual unit

between fuel injector valve and fuel injection pump.

and houses the fuel injector valve, air starting valve,

Remove the fuel pressure line.

safety valve, and compression relief valve.

The

NOTE

cylinder head is held to the cylinder block by eight studs

and nuts. A strong back (plate, connecting cylinder

Fuel pressure line may be removed

head to the adjoining head), connects one cylinder head

as one piece or two depending on

to the other and is held in place by two studs and nuts.

storage space available. Tag fuel

The cylinder head serves as the upper half of the

line in order to replace it in its proper

combustion chamber. A gasket placed between the

reassembly location

cylinder head and block provides the compression seal.

3-20