TM 5-3810-300-24 & P2
Inlet valves and springs should be replaced, if the inlet
valve seats show signs of slight nicks or scratches. They
can be redressed with a fine piece of emery cloth or by
lapping with a lapping stone, grinding compound and
grinding tool. If the seats are damaged to the extent that
they cannot be reclaimed, they must be replaced. The
dimension from the top of the cylinder block to the inlet
valve seat should not exceed .113" nor be less than
All torques specified in this manual are assembly torques and can be expected to fall off after assembly is accomplished.
Do not retorque after initial assembly torques fall.
To convert inch pounds of torque to foot pounds of torque, divide inch pounds by 12.
inch pounds = foot pounds
To convert foot pounds of torque to inch pounds of torque, multiply foot pounds by 12.
foot pounds x 12 = inch pounds
ALL FLANGE MOUNTED COMPRESSORS MUST BE ASSEMBLED WITHOUT A GASKET BETWEEN
THE CRANKCASE AND FLANGE ADAPTER AND SOME COMPRESSORS DO NOT REQUIRE
GASKETS ON THE END COVER. INSTALL THE NEW CRANKCASE GASKETS ONLY WHERE THEY
WERE REMOVED DURING DISASSEMBLY.
A. If the compressor uses a ball type main bearing, press the ball bearing onto the correct end of the crankshaft.
B. Position the ball bearing and the crankshaft in the crankcase, making sure the drive end of the crankshaft is
positioned in the crankcase as marked before disassembly.
C. Carefully press the crankshaft and ball bearing into the crankcase using an arbor press.
D. In the case of compressors with a front ball bearing, place two small seal rings in the counter-sunk holes at the
front of the crankcase, as well as an end cover gasket.
E. Install the front end cover in the proper position as marked before disassembly, taking care not to damage the
new oil seal.