TM 5-3805-280-24-2
Heating and Air Conditioning
CHECK AND ADJUST AIR CONDITIONING COMPRESSOR BELT TENSION
IMPORTANT: Never over tighten belt. Over
IMPORTANT: Force to adjust belt must be applied
tightening may cause belt cord
to front of compressor housing only
damage and excessive load on
to prevent damage to compressor.
3. Loosen compressor mounting cap screws. Apply
1. Run engine for five minutes. Stop the engine, then
force to front of compressor housing to tighten belt.
immediately check tension using a belt tension
Tighten cap screws.
gauge. Measure strand tension or deflection at a
point halfway between pulleys.
4. Repeat Steps 1 and 2 to check belts.
2. Belt must deflect 19 mm (0.75 in.) at 400 N (90 lb
force). If not, allow belt to cool for 8--10 minutes.
Air Conditioning Compressor Belt--Specification
Deflection ............................................. 19 mm (0.75 in.) at 400 N (90
lb force)
TX,18,UU3827
1921SEP981/1
18
1830
11
18-31