Replacing the V-Belt.
Remove the engine unit V-belt guard (paragraph 2-7) Loosen the four bolts which hold the engine mounting
bracket to the compressor frame and slide the engine toward the compressor. Remove old V-belt and replace it with a
new V-belt size AP-78.
Run the compressor for a few minutes to seat the belt. Stop and restart the compressor while observing
the belt There should be a slight bow on the bottom or slack side of the belt. If there is no bow, the belt is too tight. If the
belt slips or squeals, it is too loose. In either case, readjust tension.
Replace engine unit V-belt guard after belt adjustments are complete.
3-14.3. COMPRESSOR INTAKE AIR CLEANER FILTER.
This task covers: A Inspect B. Service
Tool kit, General Mechanic's Set
Brush NSN 8020-00-224-8021
Lint-free cloth NSN 7920-00-044-9281
Detergent, non-ionic NSN 7930-00-282-9699
Filter element (PIN N00070)
O-Ring (PIN 013757)
O-Ring (P/N N04451)
Grease, Halo Carbon NSN 9150-00-754-2760
Purge air pressure
A dry micronic filter is used to filter the intake air (Figure 3-11).
Checking the Air Intake Hose.
Check hose for damage.
Inspect air intake prefilter, ensure it is free from obstruction.
Cleaning the Intake Filter.
Remove cover (1) and filter element (2) (Figure 3-11, Item 2). Note position of element in housing.
Clean the filter element with a brush or by blowing through it with low pressure compressed air, from inside
Clean inside of filter housing with a damp cloth and non-ionic detergent.
Reinstalling/Replacing the Filter Element.