TM-9-2350-311-20-1

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS

AUGUST 1994

TM-9-2350-311-20-1 - Page 1095 of 1275

14-1 WINTERIZATION KIT DIAGRAM

NOTE

This installed view of the winterization kit identifies all items in the kit. Those items

which only need to be disconnected during powerplant removal are identified by a

single asterisk (*). Those items that need to be removed during powerplant removal

are identified by a double asterisk ~*).

LEGEND

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Connector (wire 459B) to MASTER switch

Receptacle at driver’s compartment bulkhead

Bulkhead-to-heater, fuel pump, and coolant

pump harness (wires 402B, 402C, 403B, 403C,

406, and ground)*

Battery insulation box

Battery heater plate parts

Exhaust outlet plug

Exhaust outlet

Transmission left access door

Exhaust tube**

Heater-to-surge tank hose connector tube*

Fuel pump-to-heater fuel tube*

Coolant heater**

Fuel pump (electric)**

Fuel filter-to-fuel pump fuel tube**

Fuel filter**

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

Primary fuel filter-to-fuel filter fuel hose*

Coolant pump (electric)**

Engine coolant surge tank hose

Heater hose-to-surge tank hose Y-connector tube

Coolant pump-to-heater hose

Engine coolant manifold-to-battery heater inlet

hose*

Engine manifold

Primary fuel filter

Primary fuel filter-to-engine fuel tube

Fuel tank-to-primary fuel filter hose

Heater lead (wire 400)

Heater control box

Control box-to-master switch and bulkhead

harness (wires 400, 402B, 402C, 406, and 459B)

MASTER switch (reference)

Battery heater outlet-to-coolant pump hose*

14-2

TM9-2350-311-20-1