Table 5-1. Troubleshooting (Con't)
TEST OR INSPECTION
Do not adjust the V-belts too tightly as this will overload motor and compressor
bearings. Also check and be sure pulley alignment is maintained.
Step 3. Check oil level in crankcase
for low oil.
level in accordance with LO 5-4310-358.12.
Step 4. Check for faulty intake and
Section III. REPAIR AND OVERHAUL INSTRUCTIONS
5-4. Pistons, Piston Rings, Connecting Rods, and
Keep the parts of each valve
a. Removal and Disassembly.
assembly together, and separate
from those of other valve assemblies.
(1) Remove the compressor assembly as
If serviceable, these parts shall be
muffler assembly (12), by loosening set screw (11). To
and remove cylinder head (37) by pulling straight away
disassemble the intake muffler follow the sequence of
from crankcase. Do not cock or twist or use undue
the reference numbers shown on the exploded view.
lateral force against cylinder to avoid damage to the
pistons and connecting rods. Remove gasket (38) and
(8) by loosening nut (6) and bolt (7).
crankshaft and remove key (9). Removing the flywheel
(8) Access to connecting rod attaching bolts
at this point facilitates the disassembly of tubes and
(10, fig. 5-9) is provided from above after cylinder head
has been removed. Remove connecting rod bolts and
withdraw lower connecting rod segment (16) from
Immediately tag lower cap segment to
remove all tubing and fittings.
Follow any logical
identify it with the exact rod from which it was removed.
sequence in removing tubes and fittings. Take care in
Each rod half is matched when manufactured. Remove
removing intercooler tubes so as not to damage cooling
oil dipper (15) only if replacement is required.
Mark the connecting rod from which
the caps were removed, and
(6) Remove intake valves (32 and 34) and
reassemble caps on the same rod.
exhaust valves (33 and 35) from cylinder head valve
Do not intermix the connecting rods
cavities. If disassembly of valves is desired follow the