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71-00-00 Page 71-12 Issued: April 1, 1997
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Figure 71-1. Engine and Shock Mount Installation 
3G3  71-00-00 Page 71-13 Issued: April 1, 1997 

INSTALLATION OF ENGINE.  (Refer to Figure 71-1.)
1.  
Attach a one-half ton (minimum) hoist to the engine hoisting straps and swing the engine into alignment with its attaching points.

2.  
Install the engine shock mounts as specified in Section 71-20-00.

3.  
Connect the alternator leads and secure cables with clamps.

4.  
Connect the oil pressure line, tachometer drive cable, oil temperature lead and the oil breather tube to the aft end of the engine.

5.  
Connect the vacuum pump line at the pump.

6.  
Secure the ignition harness, hoses and lines at the aft end of the engine.

7.  
Connect both lines to the oil cooler.

8.  
Connect the fuel pump supply line.

9.  
Connect the magneto “P” leads to the magnetos.

10.
Connect the prop control cable to the governor.

11.
Connect the throttle, mixture and carburetor heat cable.   Reinstall the carburetor, if previously removed.

12.
Connect the primer system hose to the tee fitting at the rear of the engine.

13.
Connect the starter positive and ground leads at the starter and secure with attachment clamps.

14.
Be certain that the magneto switches are OFF and install the propeller.  Refer to Chapter 61.

15.
Install the proper grade and amount of engine oil. Refer to Chapter 12.

16.
Connect the battery ground wire at the battery.

17.
Open the throttle and fuel valve completely.  Turn on the electric fuel pump and check the fuel line for leaks.

18.
Install the engine cowlings and remove the tail stand.  Make sure the appropriate drains are installed.

— CAUTION —
TO PREVENT DAMAGE TO THE ENGINE AT INITIAL RUN-IN, BE SURE TO PERFORM THE ENGINE PRE-OILING INSTRUCTIONS CONTAINED IN THE LATEST REVISION OF TEXTRON  LYCOMING SERVICE INSTRUCTION NO. 1241.
19. Perform an engine operational check. Refer to the engine manufacturer’s appropriate operator’s manual.
ENGINE PRE-OILING.
Textron Lycoming recommends pre-oiling prior to the initial start after an engine change, overhaul or any prolonged period of inactivity in order to avoid possible high speed bearing failure resulting from lack of lubrication. Refer to the latest revision of Textron Lycoming Service Instruction No. 1241 for proper pre-oiling procedure.
71-00-00 Page 71-14 Issued: April 1, 1997
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71-10-00 Page 71-15 Issued: April 1, 1997
COWLING.
The cowling consists of an upper and lower section and a nose section.  A cowl flap is an integral part of the lower cowl.
REMOVAL AND INSTALLATION OF ENGINE COWLING.  (Refer to Figure 71-2.)
1.  
Remove the fasteners securing the top cowl and remove the cowl.

2.  
Disconnect the cowl flap control.

3.  
Support the bottom cowl and remove the screws that attach the cowl to nose cowl, engine mount and nacelle.

4.  
The nose cowl may be removed by removing the attaching screws and separating the two cowl halves.

5.  
Install the cowling in reverse of removal.

CLEANING, INSPECTION AND REPAIR OF ENGINE COWLING.
1.
The cowl should be cleaned with a suitable solvent then wiped with a clean cloth.

2.
Inspect the cowling for dents, cracks, loose rivets, damaged or missing fasteners and damaged fiberglass areas.

3.
Repair all defects to prevent further damage.   Fiberglass repair procedures may be accomplished according to Fiberglass Repairs, Chapter 51.

ENGINE COWL FLAPS.  (Refer to Figure 71-3.)
The cowl flaps are all metal flaps located on the rear of the bottom cowls.  The flaps are manually operated through a push-pull control from the cockpit. The cowl flaps are connected to the engine cowls with full length piano type hinges.
OPERATION AND ADJUSTMENT OF COWL FLAPS.
The cowl flaps are all metal flaps located on the rear of the bottom cowls.  The flaps are manually operated through the push-pull controls mounted in the lower portion of the console.  When the control levers are in the up position, the flaps are closed.  To operate the cowl flaps, depress the lock and move the lever down, releasing the lock after the initial down movement will allow the lock to stop the flap travel at the intermediate position. For full open position, depress the lock and move the control down; release the lock after the initial movement and continue to move the control down until the lock stops the travel of the control.  To raise the cowl flaps reverse the procedure.  The cowl flaps should be adjusted as follows:
　
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