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 490 of 1275

TM 9-2350-311-20-1

Operating the powerplant out of the vehicle lets maintenance personnel inspect the control and drive components of the

powerplant by hand-operating control linkages on the transmission. Components can be checked for proper functioning

and performance with the powerplant outside the vehicle without harm to the unit.

c.

Special Equipment Hookup

1 Install two protective screens on radiator fans (153) with two thumbscrews and two nuts.

2 Install safety screen on air cleaner duct (76) with fine screen side facing out and install clamp (75).

3 Install engine exhaust pipe (60) on exhaust outlet (154) with clamp (59).

4 Position coolant surge tank (137) to one side, being careful not to bend hoses.

4-29