Generac Power Systems GTH760, Service Manual

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10-3
SeCTIoN 10: CYlINder & CrANkCASe Cover
Figure 10-6. Check Magneto Bearing
CHECK PTO BEARING
The sump cover must be replaced if the bearing is damaged
or if it measures larger than 42.25mm (1.663”) in diameter
(see Figure 10-7).
The diameter of the crankshaft may also make it necessary
to replace the sump cover. See Section 14 for the crankshaft
measurement details.
Figure 10-7. Check PTO Bearing
INSTALL PTO OIL SEAL:
Install a new PTO oil seal and press it in until it is 1.5mm
(1/16”) below the mounting surface.
CHECK CAMSHAFT BEARINGS
Use a telescoping gauge and caliper to check camshaft bear-
ings. If camshaft bearings are worn, crankcase or crankcase
cover must be replaced. (For vertical shaft engines, the gerotor
cover must be replaced). See Figure 10-8.
TELESCOPING
GAUGE
Figure 10-8. Checking PTO Side Camshaft Bearing
TELESCOPING
GAUGE
Figure 10-9. Checking Magneto Side Camshaft Bearing
OIL SEALS:
Always install new oil seals whenever engine is disassembled
for major servicing or when repairing bearings. Lubricate sealing
edge of oil seal with clean engine oil before assembly. Always
use the correct seal protector to prevent damaging oil seal.
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