When installing oil and vacuum pump body be careful not to damage the oil seal.
7-79. Oil Cooler Adapter and Oil Pressure Housing. See figure 7-15. Assemble the oil cooler bypass plunger (3), spring (4), gasket (5) and plug (6) in the oil cooler adapter (2). Install adapter (2), oil cooler adapter gasket (1) along with oil pressure screen housing (9), screen (8), and gasket
(7) on the crankcase assembly.
7-80.Oil Filter Adapter Assembly. See figure 7-16. Assem-ble the oil filter adapter (4) with gasket (7) on crankcase. Install temperature control valve (5) in adapter. Install converter plate (3) and converter plate stud (2) to oil filter adapter assembly. Torque converter plate stud to 50 -60
foot pounds.
7-81.Assemble the crankshaft oil seal.
1.
Remove spring from the new seal.

2.
Apply a thin film of Lubriko M-6 grease on sealing

surface of seal, on crankshaft sealing surface and on
edge of crankshaft propeller flange. Consult Service In-
struction No. 1324 for information on crankshaft oil
seal.
3.
Place seal over edge of propeller flange with open portion of seal toward the flange.

4.
Insert pin in crankshaft propeller bushing to hold both sides of seal.

5.
Use tool ST-383over propeller flange and under seal. Rotate tool around propeller flange until seal is on crankshaft.

3RDT D
TIGHTENON 1STIGHTENON 2N TIGHTEN ON
4 TH TIGHTEN ON LEFT
5T H
TIGHTEN CRANKCASE FASTENING5 THRU 10 SEQUENCEAS INDICATED
Figure 7-14. Crankcase Tightening Sequence (Four Cylinder)

Section 7 OVERHAUL MANUAL
LYCOMING 76 SERIES AIRCRAFT ENGINES
Crankcase,Crankshaft
and ReciprocatingParts
6.
Install spring over crankshaft and fasten so that

there is no twists and kinks. Force spring into the
rear of the oil seal.

7.
Clean all grease from the outside diameter of seal, propeller flange and the crankcase seal bore.

8.
Apply a coat of adhesive Goodyear Pliobond No.20or Dow Corning Silastic No. 140to outside diameter of
the seal. Insert seal into crankcase with firm pressure until it is sealed in the crankcase bore.

6
48
3

7-82. Generator or Alternator Drive Belt (Where Ap-plicable) and Ring Gear Support Assembly. Place the drive belt in the pulley of the ring gear support and assem-ble the ring gear support over the propeller flange bushings. Be sure the bushing hole in the ring gear sup-port bearing the identification "O" is assembled over the flange bushing also identified with "O" etched on crankshaft flange next to bushing. The starter ring gear must be located correctly to assure proper alignment of the timing marks on the ring gear.
8
9
1.
Gasket

2.
Oil Cooler Adapter

3.
Plunger

4.
　
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