TM 5-4310-369-14
Table 4-2. Troubleshooting - Continued
Malfunction
Teat or Inspection
Corrective Action
EXCESSIVE VIBRATION.
4.
Step 1. Check for loose compressor or engine mounts.
Tighten all the bolts holding the engine and compressor to the handtruck frame.
Step 2. Check if belts are out of alignment.
Realign belts.
a. Refer to paragraph 4-13 for removal of belt guard.
b. Loosen set screw of compressor flywheel and adjust flywheel on shaft until belts align between
pulleys. Tighten setscrew.
Refer to paragraph 3 of Pneumatic Systems, step 2, Flywheel Striking Interstage Tubing.
c. Install guard by attaching screw to engine and nuts to handtruck frame.
5.
COMPRESSOR OVERHEATING.
Step 1. Check for dirt in intercooler coil and cylinder fins.
Using air hose, blow dirt from cooling coils and fins.
When using compressed air for blowing, air hose pressure must not exceed 30 psi, and individuals must
wear eye protective equipment.
Step 2. Check for poor ventilation and high room temperature.
If compressor cannot be moved, check possibility of piping intake to cooler location. Keep a distance of
12 inches between compressor unit and walls, etc.
INTAKE AIR FILTER NOT FILTERING PROPERLY.
6.
Inspect the compressor air filters (located in the head of each low pressure cylinder) for the presence of moisture or dirt.
Replace defective filter elements if required.
securing rain caps to cylinder heads.
b. Remove air filters from cylinder heads by pinching and lifting out.
c. Cleaning and inspection.
Drycleaning solvent, P-D-680, used to clean parts is potentially dangerous to personnel and property.
Avoid repeated and prolonged skin contact. Do not use near open flame or excessive heat. Flash point of
solvent is 100F (38C).
(1) Clean the elements with cleaning solvent, item 5, App. D, and dry thoroughly.
(2) Replace damaged elements.
d. Installation.
(1) Reinstall filter elements in cylinder heads.
(.2. Reinstall air filter rain caps on cylinder heads with bolts.
)
4-7
