Table 4-2. Troubleshooting (cont)
Test or Inspection
Step 2. Check if belts are out of alignment.
b. Loosen nuts attaching guard to handtruck frame.
c. Loosen screw attaching guard to compressor. Remove guard.
d. Loosen nut on hub of flywheel pulley and adjust pulley on shaft until belts align between pul-
leys. Tighten nut.
e. Install guard by attaching screw to compressor and nuts to handtruck frame.
5, COMPRESSOR OVERHEATING.
Step 1. Check for dirt in cooling coil and cylinder fins.
Using air hose blow dirt from cooling coils and fins.
Step 2. Check for poor ventilation and high room temperature
If compressor cannot be moved, check possibility of piping intake to cooler location.
Inspect the compressor air cleaner for the presence of moisture or dirt
Replace defective filter element or the complete cleaner assembly if required.
a. Removal. Remove the air cleaner from cylinder head by turning counterclockwise.
(1) Remove screw (1, fig. 3-3) and wahers (2) and remove cover (3).
c. Cleaning and inspection.
Drycleaning solvent, P-D-680, used to clean parts is potentially dangerous to per-
sonnel and property. Avoid repeated and prolonged skin contact. Do not use near
open flame or excessive heat. Flash point of solvent is 100F (39C).
(1) Clean the air cleaner with cleaning solvent, item 5, App. D, and dry thoroughly.
(2) Clean filter element by blowing out with air or washing with cleaning solvent, item 5, App.
(3) Impact the air cleaner for cracks, dents, breaks, and other damage.
d. Reassembly end installation.
(1) Assemble filter element (4) into base (5) and cover (3).
(2) Install washers (2) and screws (1).
(3) Install the air cleaner assembly to cylinder head by turning clockwise.
7. AIR LEAKAGE.
Step 1. Check for defective intercooler relief valve.
Replace a defective valve.
(1) Open the air tank drain valve and drain all air from the compressor.
(2) Remove the intercooler safety valve from the compressor cylinder head by turning the