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WT9 Dynamic LSA. AIRCRAFT MAINTENANCE MANUAL (AS-AMM-01-000, 22. 05. 2017) - page 44

Effectivity:

ALL

04. 07. 2019

ENGINE
INDICATING

Oil temperature sensor

The oil temperature sensor is screwed into the oil pump body.

Type of maintenance:

Line

Personnel qualification:

Independent certifying staff qualified in accordance

with Part-66 or higher.

Recommended tools, materials, persons and documentation:

ITEM

QUANTITY

Wrench 12

1 pc

Pliers

1 pc

Maintenance Manual (Line Maintenance) for Rotax Engine
Type 912 Series, Ref. No.: MML-912

Persons

Tab. 77-4 Recommended tools, materials, persons and documentation

WARNING

ENGINE IGNITION MUST BE SWITCHED OFF. DISCONNECT
NEGATIVE TERMINAL OF AIRCRAFT BATTERY.

CARELESS DRAINING OF HOT ENGINE OIL MAY CAUSE
SCALDS. DISPOSE OF USED OIL AND FILTERS RESPECTING
THE ENVIRONMENTAL AND SAFETY REGULATIONS.

(1) Oil temperature sensor removal:

(a) Make sure that the

IGNITION

switches are set to

OFF

(b) Make sure that the

MASTER SWITCH

is set to

OFF

(d) Disconnect negative terminal of battery (Chapter 24-30).

(e) Disconnect wire (6, Fig. 77-5) from sensor (4).

(f)

Remove sensor (4) and ground wire (5) from the engine fitting.

(g) Install protective plug on the engine fitting.

(2) Oil temperature sensor installation:

(a) Make sure that the

IGNITION

switches are set to

OFF

(b) Make sure that the

MASTER SWITCH

is set to

OFF

(d) Install sensor (4, Fig. 77-5) with ground wire (5) to the engine fitting.

(e) Connect wire (6) to the sensor (4).

(f)

Check if sensor is firmly secured and sealed.

(g) Connect negative terminal of the battery (Chapter 24-30).

(h) Carry out engine ground test; check oil system for leaks and oil

system indication.

(i)

Install the engine cowlings (Chapter 71-10).

ENGINE SENSORS

ENGINE

INDICATING

– Oil pressure sensor

– Oil temperature sensor

– Electrical connector

– Ground wire

– Cooper gasket ring ø14.2 x 20 x 2

– Wire

Fig. 77-5 Oil Temperature and Pressure Sensor Removal / Installation

Effectivity:

ALL

04. 07. 2019

ENGINE
INDICATING

Oil pressure sensor

The oil pressure sensor is screwed into the oil pump body.

Type of maintenance:

Line

Personnel qualification:

Independent certifying staff qualified in accordance

with Part-66 or higher.

Recommended tools, materials, persons and documentation:

ITEM

QUANTITY

Wrench 12

1 pc

Wrench 14

1 pc

Screwdriver 5

1 pc

Pliers

1 pc

Cable tie 2.6

1 pc

Cooper gasket ring

ø14.2 x 20 x 2

1 pc

Maintenance Manual (Line Maintenance) for Rotax Engine
Type 912 Series, Ref. No.: MML-912

Persons

Tab. 77-5 Recommended tools, materials, persons and documentation

WARNING

CARELESS DRAINING OF HOT ENGINE OIL MAY CAUSE
SCALDS. DISPOSE OF USED OIL AND FILTERS RESPECTING
THE ENVIRONMENTAL AND SAFETY REGULATIONS.

(1) Oil pressure sensor removal:

(a) Make sure that the

IGNITION

switches are set to

OFF

(b) Make sure that the

MASTER SWITCH

is set to

OFF

(d) Cut cable tie and disconnect electrical connector (2, Fig. 77-5) from

sensor (1).

(e) Remove the sensor (1) and gasket ring (3).

(f)

Install protective plugs on the engine fitting.

(2) Oil pressure sensor installation:

(a) Make sure that the

IGNITION

switches are set to

OFF

(b) Make sure that the

MASTER SWITCH

is set to

OFF

(d) Install the sensor (1, Fig. 77-5) and gasket ring (3) to the engine

fitting.

(e) Connect electrical connector (2) to the sensor (1) and fasten wire

with cable tie.

(f)

Check if sensor and reducer are firmly secured and sealed.

ENGINE SENSORS

ENGINE

INDICATING

(g) Carry out engine ground test; check oil system for leaks and oil

system indication.

(h) Install the engine cowlings (Chapter 71-10).

MAP sensor

The MAP sensor is installed at firewall.

Type of maintenance:

Line

Personnel qualification:

Independent certifying staff qualified in accordance

with Part-66 or higher.

Recommended tools, materials, persons and documentation:

ITEM

QUANTITY

Wrench 10

2 pcs

Screwdriver

1 pc

Oetiker pliers

1 pc

Persons

Tab. 77-6 Recommended tools, materials, persons and documentation

(1) MAP sensor removal:

(a) Make sure that the

IGNITION

switches are set to

OFF

(b) Make sure that the

MASTER SWITCH

is set to

OFF

(d) Disconnect the connector (2, Fig. 77-6) from the sensor.

(e) Remove the clamp (4).

(f)

Disconnect the hose (3) from the port of the sensor.

(g) Remove the mounting nuts (6), washers (7; 8) and bolts (5).

(h) Remove the sensor (1).

(i)

Put the caps on the hose and sensor port.

(2) MAP sensor installation:

(a) Make sure that the

IGNITION

switches are set to

OFF

(b) Make sure that the

MASTER SWITCH

is set to

OFF

(d) Put the sensor (1, Fig. 77-6) in position on the firewall (9).

(e) Hold the sensor and attach it with bolts (5), washers (7; 8) and nuts

(6).

(f)

Connect the hose (3) to the port of the sensor (1) and secure it with
clamp (4).

(g) Connect the connector (2) to the sensor (1).

(h) Check if sensor is firmly secured.

(i)

Install the engine cowlings (Chapter 71-10).

(j)

Carry out an operational test; check MAP indication.

Effectivity:

ALL

04. 07. 2019

ENGINE
INDICATING

– MAP sensor

– Self-locking nut M6

– Electrical connector

– Washer ø6.4 x 12 x 1.6

– Hose

– Washer ø6.4 x 18 x 1.6

– Hose clamp 14.5

For information:

– Bolt M6 x 36

– Firewall

Fig. 77-6 MAP Sensor Removal / Installation

ENGINE SENSORS

ENGINE

INDICATING

Ammeter shunt

The ammeter shunt is installed at firewall.

Type of maintenance:

Line

Personnel qualification:

Independent certifying staff qualified in accordance

with Part-66 or higher.

Recommended tools, materials, persons and documentation:

ITEM

QUANTITY

Wrench 10

1 pc

Flat screwdriver

1 pc

Cross screwdriver

1 pc

Cutting pliers

1 pc

Maintenance Manual (Line Maintenance) for Rotax Engine
Type 912 Series, Ref. No.: MML-912

Persons

Tab. 77-7 Recommended tools, materials, persons and documentation

WARNING

ENGINE IGNITION MUST BE SWITCHED OFF. DISCONNECT
NEGATIVE TERMINAL OF AIRCRAFT BATTERY.

(1) Ammeter shunt removal:

(a) Make sure that the

IGNITION

switches are set to

OFF

(b) Make sure that the

MASTER SWITCH

is set to

OFF

(d) Disconnect negative terminal of battery (Chapter 24-30).

(e) Remove cable tie (7, Fig. 77-7) and remove the cover (1).

(f)

Disconnect wires from shunt.

(g) Remove the shunt (2) unscrewing bolts (3), nuts (4) and washers (5)

and (6).

(2) Ammeter shunt installation:

(a) Make sure that the

IGNITION

switches are set to

OFF

(b) Make sure that the

MASTER SWITCH

is set to

OFF

(5) and (6).

(d) Connect wires to the shunt.

(e) Check if shunt is firmly secured and sealed.

(f)

Install the shunt cover (1) and cable tie (7).

(g) Connect negative terminal of the battery (Chapter 24-30).

(h) Carry out engine ground test.

Effectivity:

ALL

04. 07. 2019

ENGINE
INDICATING

– Shunt cover

– Washer 6.4 x 12 x 1.6

– Shunt

– Washer 6.4 x 18 x 1.6

– Bolt M6 x 25

– Cable tie

– Nut M6

Fig. 77-7 Ammeter Shunt Removal / Installation

ENGINE SENSORS

ENGINE

INDICATING

SV-EMS-220 module

The SV-EMS-220 module is installed at left instrument floor behind the
instrument panel.

Type of maintenance:

Line

Personnel qualification:

Independent certifying staff qualified in accordance

with Part-66 or higher.

Recommended tools, materials, persons and documentation:

ITEM

QUANTITY

Wrench 7

1 pc

Screwdriver

1 pc

Philips screwdriver

1 pc

Persons

Tab. 77-4 Recommended tools, materials, persons and documentation

(1) SV-EMS-220 module removal:

(a) Make sure that the

MASTER SWITCH

is set to

OFF

(b) Remove the instrument panel cover (Chapter 39-10).

(1).

(d) Remove the mounting nuts (6), washers (7) and screws (5).

(e) Remove the EMS module (1) from the floor (8).

(2) SV-EMS-220 module installation:

(a) Make sure that the

MASTER SWITCH

is set to

OFF

(b) Put the EMS module (1, Fig. 77-8) in position on the instrument floor

(8).

(6).

(d) Connect the connectors (2; 3; 4) to the module.

(e) Install the instrument panel cover (Chapter 39-10).

(f)

Carry out setting (as required) and operational test

– refer to the

Dynon Avionics SkyView System Installation, Doc. No. 101320-022,
Revision Q” or later.

Effectivity:

ALL

04. 07. 2019

ENGINE
INDICATING

– SV-EMS-220 Module

– Self-locking nut M4

– DB37 main sensor connector

– Washer ø4 x 9 x 1

– DB25 CHT/EGT sensor connector

For information:

– SkyView network connector

– Left instrument floor

– Screw M4 x 12

Fig. 77-8 SV-EMS-220 Module Removal / Installation

GENERAL

EXHAUST

78-00 GENERAL

1. INTRODUCTION

This chapter describes the engine exhaust system. The exhaust system consists of
the exhaust tubes, muffler and the exhaust pipe. On the muffler are installed airbox
pre-heat exchanger (Chapter 71-60) and heat exchanger (Chapter 21-40).

2. TROUBLESHOOTING

TROUBLE

POSSIBLE CAUSE

REMEDY

The exhaust system
makes too much noise.

A damaged muffler.

Replace the exhaust
system.

Too much vibration.

Cracks in the exhaust
tube.

Replace the exhaust
system/ weld the crack.

Exhaust gas leaks into
the cockpit.

Cracks in the muffler.

Replace the exhaust
system.

Indication of exhaust gas
leaks on the engine
cowling.

Defective exhaust tube
gaskets.

Replace defective
gaskets.

The nuts that attach the
exhaust tubes to the
cylinder head are loose.
Torque to 12

– 20 Nm.

EXHAUST SYSTEM

EXHAUST

78-10 EXHAUST SYSTEM

1. DESCRIPTION

The exhaust gases from each cylinder pass through the exhaust tubes (2, Fig. 78-1)
to the muffler (1) which is attached to the engine mount by holders (3) and clamps
(4). The exhaust tubes are connected to the muffler inlets and are fixed by clamps
(5). The exhaust gases discharge through the exhaust pipe (6) on the left side.

The two-piece heat exchanger (8) and the airbox pre-heat exchanger (7) are
attached to the muffler (1).

– Muffler

– Clamp

– Exhaust tube

– Exhaust pipe

– Holder

– Airbox pre-heat exchanger

– Clamp

– Heat exchanger

Fig. 78-1 Exhaust System

Effectivity:

ALL

04. 07. 2019

EXHAUST

2. MAINTENANCE PRACTICES

Exhaust system

Type of maintenance:

Line

Personnel qualification:

Independent certifying staff qualified in accordance

with Part-66 or higher.

Recommended tools, materials, persons and documentation:

ITEM

QUANTITY

Wrench 7

2 pcs

Wrench 10

1 pc

Wrench 13

1 pc

Socket 5

1 pc

Socket 12

1 pc

Screwdriver 5

1 pc

Pliers

1 pc

Serrated locking washer

ø6.4

6 pcs

Loctite 243

Lockwire

ø0.8 mm

Persons

Tab. 78-1 Recommended tools, materials, persons and documentation

WARNING

ENGINE IGNITION MUST BE SWITCHED OFF!

MAKE SURE THE EXHAUST SYSTEM IS COOL BEFORE YOU
TOUCH IT. THE EXHAUST SYSTEM CAN BE HOT. THIS CAN
CAUSE INJURY TO PERSONS.

(1) Exhaust system removal:

(a) Make sure that the

IGNITION

switches are set to

OFF

(b) Remove the engine cowlings (Chapter 71-10).

the engine (Refer to the Maintenance Manual for Engine Type 912
Series, Ref. No.: MML-912 for maintenance practices information).

(d) Remove the airbox (Chapter 71-60).

(e) Disconnect the EGT sensors (22, Fig. 78-02) from the exhaust tubes

(2, 3) (Chapter 77-40).

(f)

Disconnect the air hose (13) from the airbox pre-heat exchanger (11)
and the air hoses (14; 15) from the heat exchanger (12), by removing
the hose clamps (16).

EXHAUST SYSTEM

EXHAUST

(g) Unscrew all nuts (20) and release the clamps (17).

(h) Remove the clamps (6).

(i)

Slightly shift the muffler (1) backward and remove the exhaust tubes
(2; 3; 4; 5).

(j)

Unscrew the bolts (18), remove the washers (19) and brackets (7; 8;
9; 10). Carefully remove the muffler (1) with the assembled heat and
airbox pre-heat exchangers (11; 12).

(k) On the muffler (1), remove the lockwire, release and remove the

universal clamps (21) and remove the exchangers (11; 12).

(2) Exhaust system installation:

(a) Make sure that the

IGNITION

switches are set to

OFF

(b) Make sure that the battery is disconnected and the upper line of

spark plugs is removed from the engine.

WARNING

CHECK THE EXHAUST SYSTEM VERY CAREFULLY. A
DEFECTIVE MUFFLER WILL LET THE EXHAUST GASES
INTO THE COCKPIT. THIS CAN CAUSE DEATH OR INJURY
TO PERSONS OR CAN RESULT IN ENGINE POWER LOSS,
POSSIBLY FIRE.

(d) Install the heat exchanger (12, Fig. 78-02) and the airbox pre-heat

exchanger (11) on the muffler (1) according to Fig. 78-03. Secure
them with the universal clamps (21, Fig. 78-02); secure the universal
clamps (21) with the lockwire (see Chapter 20-20).

(e) Install the muffler (1) between the engine mount struts, slide the short

air hose (14) into the heat exchanger (12) and secure it with the hose
clamp (16).

(f)

Install proper brackets (7; 8; 9; 10) (one bracket consists of two
parts) using new washers (19) and the bolts (18); do not tighten
them.

(g) Connect the exhaust tubes (2; 3) with the engine and muffler (1) and

secure them with clamps (17).

(h) Slide on and screw the clamps (6); do not tighten them.

(i)

Unscrew the bolts (18), apply Loctite 243 on the bolts (18) threads
and tighten them.

(j)

Tighten the clamps (6) and secure them with lockwire (see Chapter
20-20).

(k) Install the exhaust tubes (4; 5), secure them with the clamps (17) and

gradually tighten the nuts (20) on all exhaust tubes (2; 3; 4; 5)

–

tightening torque 12

– 20 Nm.

Effectivity:

ALL

04. 07. 2019

EXHAUST

(l)

Slide the air hose (13) on the airbox pre-heat exchanger (11) and
the air hose (14, 15) on the heat exchanger (12); secure them
with the clamps (16).

(m) Install the EGT sensors (22) (Chapter 77-40).

(n) Install the airbox (Chapter 71-60).

(o) Connect the battery.

(p) Carry out an engine ground test; check the exhaust system for leaks

and EGT system indication.

(q) Install the engine cowlings (Chapter 71-10).

EXHAUST SYSTEM

EXHAUST

– Muffler

– Lower left holder

46 x 41

– Clamp 8.8

– Exhaust tube U L

– Middle holder 46 x 25 18 – Allen bolt M6 x 12

– Exhaust tube U R

– Airbox pre-heat

exchanger

– Locking washer ø6.4

– Exhaust tube B L

– Heat exchanger

– Self-locking nut M8

– Exhaust tube B R

– Airbox hose

– Universal clamp ø120

– Clamp ø120

– Heating hose 1

– EGT sensor

– Upper holder 86 x 24 15 – Heating hose 2

For information:

– Lower right holder

43 x 41

– Hose clamp ø40 x 60 23 – Engine mount

Fig. 78-2 Exhaust System Removal / Installation

Content .. 42 43 44 45 ..