TM 9-2320-272-10
2-3. CHASSIS CONTROLS AND INDICATORS (Contd)
Key
Item and Function
13
SPARE TIRE DAVIT BOOM is extended to allow spare tire to be lifted and guided over side of vehicle. Davit
boom is installed on all M939/A1/A2 series vehicles except M929/A1/A2, M930/A1/A2, and M934/A1/A2 models
which are equipped with an eyebolt or special divot, and M936/A1/A2 models which use the vehicle boom to lift
and lower spare tire.
14
CHAIN FALL lifts and lowers spare tire (all models except M936/A1/A2).
15
WHEEL BRACE holds tire in place once hinged wheel brace (16) is secured.
16
HINGED WHEEL BRACE (all models except M929/A1A2, M930/A1/A2, and M936/AVA2) is removed before spare
tire removal.
17
WING LUG secures hinged wheel brace (16) to spare tire.
18
RETAINING PIN secures wing lug (17) to hinged wheel brace (16) for traveling.
19
SPARE TIRE WING LUG (M936/A1/A2 models) secures spare tire to wrecker.
2-13
