COMPRESSOR OIL PUMP ASSEMBLY

TM5-4110-234-14

TO 40R7-5-7-1

(6) Clean all parts with dry cleaning solvent (Fed Spec P-D-680) and dry thoroughly. Remove all gasket remains

from the compressor housing and cylinder head.

b. Prior to reassembly check to see if there are other parts to be inspected, repaired or replaced that would

require head and valve plate removal.

c. Reassembly. Use either figure 5-9 or 5-11 as a guide to reassembly. Use new gaskets at reassembly.

(1) Do not interchange valves. They should be reassembled in their original position. Install the suction valve

positioning springs on dowel pins. Assemble positioning springs with spring ends bearing against cylinder deck (fig. 5-12).

Spring bow upward.

(2) Install suction valves on dowel pins over positioning springs.

(3) Install new valve plate gasket. Oiling gaskets for reassembly is not recommended. Using proper hold-down

torque will prevent any leaks.

(4)

Place valve plate on cylinder deck.

(5)

Install new cylinder head gasket. Make sure gasket is lined up correctly with the cylinder head and valve

plate.

(6) Replace cylinder head. To prevent high to low side leak in center portion of cylinder head gasket, torque

cylinder head cap screws to 30-35 ft-lb.

(7) Certain high compression ratio applications develop high discharge gas temperatures which sometimes

allows the cylinder head and valve plate gaskets to develop a set. Under these conditions the cap screws could lose some

of their hold-down torque. It is therefore recommended all head cap screws be retorqued 24 hours after new gaskets have

been installed.

5-30.

COMPRESSOR OIL PUMP ASSEMBLY

See figures 5-9 or 5-10 and 5-13. Note that figure 5-13 shows the compressor used on the F1000ORG-2. The

suction strainer is located on the opposite end on the F1OOOOR-6. -All other features are the same.

a. Disassembly.

(1) See figure 5-9 or 5-10 as applicable and remove the four cap screws from the cover plate and remove the oil

feed guide vane and spring. In figure 5-13 this has already been done.

(2) Remove the drive segment cap screws (6, fig. 5-13) from the end of the crankshaft. This must be done

before step 3.

(3)

Remove the eight cap screws (7, fig. 5-13) holding the bearing head assembly to the crankcase.

(4)

Remove the bearing head assembly by pulling forward.

Inspection.

(1)

Inspect the bearing surfaces for evidence of wear or damage.

(2)

Check internal running gear for any obvious problems such as broken rods or pistons.

(3)

If the drive segment (4, fig. 5-13) appears worn, replace it.

(4) If the bearing head appears worn or scored, the complete bearing head assembly should be replaced.

c. Prior to reassembly check to see if there are other parts to be inspected, repaired or replaced that would

require oil pump assembly removal.

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